Pub Date : 2024-02-08DOI: 10.1186/s42408-023-00237-9
Sayedeh Sara Sayedi, Benjamin W. Abbott, Boris Vannière, Bérangère Leys, Daniele Colombaroli, Graciela Gil Romera, Michał Słowiński, Julie C. Aleman, Olivier Blarquez, Angelica Feurdean, Kendrick Brown, Tuomas Aakala, Teija Alenius, Kathryn Allen, Maja Andric, Yves Bergeron, Siria Biagioni, Richard Bradshaw, Laurent Bremond, Elodie Brisset, Joseph Brooks, Sandra O. Brugger, Thomas Brussel, Haidee Cadd, Eleonora Cagliero, Christopher Carcaillet, Vachel Carter, Filipe X. Catry, Antoine Champreux, Emeline Chaste, Raphaël Daniel Chavardès, Melissa Chipman, Marco Conedera, Simon Connor, Mark Constantine, Colin Courtney Mustaphi, Abraham N. Dabengwa, William Daniels, Erik De Boer, Elisabeth Dietze, Joan Estrany, Paulo Fernandes, Walter Finsinger, Suzette G. A. Flantua, Paul Fox-Hughes, Dorian M. Gaboriau, Eugenia M.Gayo, Martin. P. Girardin, Jeffrey Glenn, Ramesh Glückler, Catalina González-Arango, Mariangelica Groves, Douglas S. Hamilton, Rebecca Jenner Hamilton, Stijn Hantson, K...
The global human footprint has fundamentally altered wildfire regimes, creating serious consequences for human health, biodiversity, and climate. However, it remains difficult to project how long-term interactions among land use, management, and climate change will affect fire behavior, representing a key knowledge gap for sustainable management. We used expert assessment to combine opinions about past and future fire regimes from 99 wildfire researchers. We asked for quantitative and qualitative assessments of the frequency, type, and implications of fire regime change from the beginning of the Holocene through the year 2300. Respondents indicated some direct human influence on wildfire since at least ~ 12,000 years BP, though natural climate variability remained the dominant driver of fire regime change until around 5,000 years BP, for most study regions. Responses suggested a ten-fold increase in the frequency of fire regime change during the last 250 years compared with the rest of the Holocene, corresponding first with the intensification and extensification of land use and later with anthropogenic climate change. Looking to the future, fire regimes were predicted to intensify, with increases in frequency, severity, and size in all biomes except grassland ecosystems. Fire regimes showed different climate sensitivities across biomes, but the likelihood of fire regime change increased with higher warming scenarios for all biomes. Biodiversity, carbon storage, and other ecosystem services were predicted to decrease for most biomes under higher emission scenarios. We present recommendations for adaptation and mitigation under emerging fire regimes, while recognizing that management options are constrained under higher emission scenarios. The influence of humans on wildfire regimes has increased over the last two centuries. The perspective gained from past fires should be considered in land and fire management strategies, but novel fire behavior is likely given the unprecedented human disruption of plant communities, climate, and other factors. Future fire regimes are likely to degrade key ecosystem services, unless climate change is aggressively mitigated. Expert assessment complements empirical data and modeling, providing a broader perspective of fire science to inform decision making and future research priorities.
{"title":"Assessing changes in global fire regimes","authors":"Sayedeh Sara Sayedi, Benjamin W. Abbott, Boris Vannière, Bérangère Leys, Daniele Colombaroli, Graciela Gil Romera, Michał Słowiński, Julie C. Aleman, Olivier Blarquez, Angelica Feurdean, Kendrick Brown, Tuomas Aakala, Teija Alenius, Kathryn Allen, Maja Andric, Yves Bergeron, Siria Biagioni, Richard Bradshaw, Laurent Bremond, Elodie Brisset, Joseph Brooks, Sandra O. Brugger, Thomas Brussel, Haidee Cadd, Eleonora Cagliero, Christopher Carcaillet, Vachel Carter, Filipe X. Catry, Antoine Champreux, Emeline Chaste, Raphaël Daniel Chavardès, Melissa Chipman, Marco Conedera, Simon Connor, Mark Constantine, Colin Courtney Mustaphi, Abraham N. Dabengwa, William Daniels, Erik De Boer, Elisabeth Dietze, Joan Estrany, Paulo Fernandes, Walter Finsinger, Suzette G. A. Flantua, Paul Fox-Hughes, Dorian M. Gaboriau, Eugenia M.Gayo, Martin. P. Girardin, Jeffrey Glenn, Ramesh Glückler, Catalina González-Arango, Mariangelica Groves, Douglas S. Hamilton, Rebecca Jenner Hamilton, Stijn Hantson, K...","doi":"10.1186/s42408-023-00237-9","DOIUrl":"https://doi.org/10.1186/s42408-023-00237-9","url":null,"abstract":"The global human footprint has fundamentally altered wildfire regimes, creating serious consequences for human health, biodiversity, and climate. However, it remains difficult to project how long-term interactions among land use, management, and climate change will affect fire behavior, representing a key knowledge gap for sustainable management. We used expert assessment to combine opinions about past and future fire regimes from 99 wildfire researchers. We asked for quantitative and qualitative assessments of the frequency, type, and implications of fire regime change from the beginning of the Holocene through the year 2300. Respondents indicated some direct human influence on wildfire since at least ~ 12,000 years BP, though natural climate variability remained the dominant driver of fire regime change until around 5,000 years BP, for most study regions. Responses suggested a ten-fold increase in the frequency of fire regime change during the last 250 years compared with the rest of the Holocene, corresponding first with the intensification and extensification of land use and later with anthropogenic climate change. Looking to the future, fire regimes were predicted to intensify, with increases in frequency, severity, and size in all biomes except grassland ecosystems. Fire regimes showed different climate sensitivities across biomes, but the likelihood of fire regime change increased with higher warming scenarios for all biomes. Biodiversity, carbon storage, and other ecosystem services were predicted to decrease for most biomes under higher emission scenarios. We present recommendations for adaptation and mitigation under emerging fire regimes, while recognizing that management options are constrained under higher emission scenarios. The influence of humans on wildfire regimes has increased over the last two centuries. The perspective gained from past fires should be considered in land and fire management strategies, but novel fire behavior is likely given the unprecedented human disruption of plant communities, climate, and other factors. Future fire regimes are likely to degrade key ecosystem services, unless climate change is aggressively mitigated. Expert assessment complements empirical data and modeling, providing a broader perspective of fire science to inform decision making and future research priorities.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"16 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139764287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-08DOI: 10.1186/s42408-023-00226-y
Pablo Souza-Alonso, Beatriz Omil, Alexandre Sotelino, David García-Romero, Eugenio Otero-Urtaza, Mar Lorenzo Moledo, Otilia Reyes, Juan Carlos Rodríguez, Javier Madrigal, Daniel Moya, Juan Ramón Molina, Francisco Rodriguez y Silva, Agustín Merino
Forest fires represent a severe threat to Mediterranean ecosystems and are considered one of the major environmental and socioeconomic problems of the region. The project Plantando cara al fuego (PCF, Spain) is designed to transfer knowledge and to improve the training of new generations in forest fire management. The project is based on the application of service-learning (S-L), an educational methodology that combines learning and community service. Conceived as a compendium of S-L initiatives, the PCF project is composed of several S-L projects with the objective of reducing the problem of forest fires. The individual projects are developed at the regional/local level, each one involving different social agents such as researchers, students (from different disciplines), schools, multidisciplinary professionals, NGOs, or the administration. Participants received an initial training in S-L to design projects focused on different aspects of forest fires (environmental awareness, outreach/communication, fire prevention or post-fire restoration). These applied projects are formally integrated in the learning process via curriculum, which serve to teach and reinforce transversal skills and allow students to get involved and work to solve real problems. In general, the response of the participants was highly favorable, since the projects served to create an atmosphere that facilitates learning, interaction between participants, the application of theoretical class contents, knowledge transfer, or the exchange of good teaching practices. The summary of the PCF project presented in this work serves as a practical guide describing the activities, participants, and the necessary steps involved in the design, development, and evaluation of S-L projects to address environmental problems. In this case, the S-L was adapted to a specific context (i.e., the problem of forest fires) to which it had never been previously applied, but this methodology is versatile and can be applied to different environmental issues.
森林火灾是对地中海生态系统的严重威胁，被认为是该地区主要的环境和社会经济问题之一。Plantando cara al fuego（PCF，西班牙）项目旨在传授知识，加强对新一代的森林火灾管理培训。该项目以服务学习（S-L）的应用为基础，这是一种将学习与社区服务相结合的教育方法。PCF 项目是 S-L 活动的汇编，由多个 S-L 项目组成，目的是减少森林火灾问题。每个项目都是在地区/地方层面开展的，涉及不同的社会主体，如研究人员、学生（来自不同学科）、学校、多学科专业人员、非政府组织或行政部门。参与者接受了 S-L 的初步培训，以设计侧重于森林火灾不同方面（环境意识、宣传/沟通、火灾预防或火灾后恢复）的项目。这些应用项目通过课程正式纳入学习过程，用于教授和强化横向技能，并让学生参与其中，努力解决实际问题。总体而言，参与者的反应非常好，因为这些项目有助于营造一种氛围，促进学习、参与者之间的互动、理论课内容的应用、知识传授或良好教学实践的交流。本作品中介绍的 PCF 项目摘要可作为实用指南，描述解决环境问题的 S-L 项目的设计、开发和评估所涉及的活动、参与者和必要步骤。在这一案例中，S-L 被调整以适应以前从未应用过的特定环境（即森林火灾问题），但这一方法是多用途的，可应用于不同的环境问题。
{"title":"Service-learning to improve training, knowledge transfer, and awareness in forest fire management","authors":"Pablo Souza-Alonso, Beatriz Omil, Alexandre Sotelino, David García-Romero, Eugenio Otero-Urtaza, Mar Lorenzo Moledo, Otilia Reyes, Juan Carlos Rodríguez, Javier Madrigal, Daniel Moya, Juan Ramón Molina, Francisco Rodriguez y Silva, Agustín Merino","doi":"10.1186/s42408-023-00226-y","DOIUrl":"https://doi.org/10.1186/s42408-023-00226-y","url":null,"abstract":"Forest fires represent a severe threat to Mediterranean ecosystems and are considered one of the major environmental and socioeconomic problems of the region. The project Plantando cara al fuego (PCF, Spain) is designed to transfer knowledge and to improve the training of new generations in forest fire management. The project is based on the application of service-learning (S-L), an educational methodology that combines learning and community service. Conceived as a compendium of S-L initiatives, the PCF project is composed of several S-L projects with the objective of reducing the problem of forest fires. The individual projects are developed at the regional/local level, each one involving different social agents such as researchers, students (from different disciplines), schools, multidisciplinary professionals, NGOs, or the administration. Participants received an initial training in S-L to design projects focused on different aspects of forest fires (environmental awareness, outreach/communication, fire prevention or post-fire restoration). These applied projects are formally integrated in the learning process via curriculum, which serve to teach and reinforce transversal skills and allow students to get involved and work to solve real problems. In general, the response of the participants was highly favorable, since the projects served to create an atmosphere that facilitates learning, interaction between participants, the application of theoretical class contents, knowledge transfer, or the exchange of good teaching practices. The summary of the PCF project presented in this work serves as a practical guide describing the activities, participants, and the necessary steps involved in the design, development, and evaluation of S-L projects to address environmental problems. In this case, the S-L was adapted to a specific context (i.e., the problem of forest fires) to which it had never been previously applied, but this methodology is versatile and can be applied to different environmental issues.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"24 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139764129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-07DOI: 10.1186/s42408-023-00241-z
Emily G. Brodie, Eric E. Knapp, Wesley R. Brooks, Stacy A. Drury, Martin W. Ritchie
The capacity of forest fuel treatments to moderate the behavior and severity of subsequent wildfires depends on weather and fuel conditions at the time of burning. However, in-depth evaluations of how treatments perform are limited because encounters between wildfires and areas with extensive pre-fire data are rare. Here, we took advantage of a 1200-ha randomized and replicated experiment that burned almost entirely in a subsequent wildfire under a wide range of weather conditions. We compared the impacts of four fuel treatments on fire severity, including two thin-only, a thin-burn, a burn-only, and an untreated control. We evaluated four fire severity metrics—tree mortality, average bole char height, percent crown volume consumed (PCVC), and percent crown volume affected (PCVA)—and leveraged data from pre-fire surface and canopy fuels to better understand the mechanisms driving differences in wildfire severity among treatments and how they changed with fire weather. We found strong mitigating effects of treatments on fire behavior and tree mortality, despite 20 years having elapsed since mechanical thinning and 10 years since the second entry of prescribed fire. The thin-burn treatment resulted in the lowest fire severity across all four metrics and the untreated control the highest. All four fire severity metrics were positively associated with pre-fire canopy and surface fuel loads, with the exception that PCVC (a fire severity metric related to crown fire behavior) was not associated with surface fuel load. The fire weather conditions under which fuel treatment was most effective varied among fire severity metrics. Fuel treatment benefit was maximized at intermediate burning index values for tree mortality, intermediate to high burning index values for PCVA, and high burning index for bole char height and PCVC. We conclude that reducing canopy bulk density via mechanical thinning treatments can help to limit crown fire behavior for 20 years or more. However, reducing surface fuels is necessary to limit scorching and the total crown impacts associated with tree mortality. Further, while fuel treatment effectiveness may decline under the most severe fire weather conditions for fire severity metrics associated with tree mortality, it is maximized under severe fire weather conditions for fire severity metrics associated with crown fire behavior (bole charring and torching). Our results provide strong evidence for the use of fuel treatments to mitigate fire behavior and resulting fire severity even under extreme fire weather conditions.
{"title":"Forest thinning and prescribed burning treatments reduce wildfire severity and buffer the impacts of severe fire weather","authors":"Emily G. Brodie, Eric E. Knapp, Wesley R. Brooks, Stacy A. Drury, Martin W. Ritchie","doi":"10.1186/s42408-023-00241-z","DOIUrl":"https://doi.org/10.1186/s42408-023-00241-z","url":null,"abstract":"The capacity of forest fuel treatments to moderate the behavior and severity of subsequent wildfires depends on weather and fuel conditions at the time of burning. However, in-depth evaluations of how treatments perform are limited because encounters between wildfires and areas with extensive pre-fire data are rare. Here, we took advantage of a 1200-ha randomized and replicated experiment that burned almost entirely in a subsequent wildfire under a wide range of weather conditions. We compared the impacts of four fuel treatments on fire severity, including two thin-only, a thin-burn, a burn-only, and an untreated control. We evaluated four fire severity metrics—tree mortality, average bole char height, percent crown volume consumed (PCVC), and percent crown volume affected (PCVA)—and leveraged data from pre-fire surface and canopy fuels to better understand the mechanisms driving differences in wildfire severity among treatments and how they changed with fire weather. We found strong mitigating effects of treatments on fire behavior and tree mortality, despite 20 years having elapsed since mechanical thinning and 10 years since the second entry of prescribed fire. The thin-burn treatment resulted in the lowest fire severity across all four metrics and the untreated control the highest. All four fire severity metrics were positively associated with pre-fire canopy and surface fuel loads, with the exception that PCVC (a fire severity metric related to crown fire behavior) was not associated with surface fuel load. The fire weather conditions under which fuel treatment was most effective varied among fire severity metrics. Fuel treatment benefit was maximized at intermediate burning index values for tree mortality, intermediate to high burning index values for PCVA, and high burning index for bole char height and PCVC. We conclude that reducing canopy bulk density via mechanical thinning treatments can help to limit crown fire behavior for 20 years or more. However, reducing surface fuels is necessary to limit scorching and the total crown impacts associated with tree mortality. Further, while fuel treatment effectiveness may decline under the most severe fire weather conditions for fire severity metrics associated with tree mortality, it is maximized under severe fire weather conditions for fire severity metrics associated with crown fire behavior (bole charring and torching). Our results provide strong evidence for the use of fuel treatments to mitigate fire behavior and resulting fire severity even under extreme fire weather conditions.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"24 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139764191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-05DOI: 10.1186/s42408-023-00235-x
M. Bryan Held, Miranda Rose Ragland, Sage Wood, Amelia Pearson, Seth Wayne Pearson, Olivia Chenevert, Rachel Marie Granberg, Robin Michelle Verble
Wildland firefighters are likely to experience heightened risks to safety, health, and overall well-being as changing climates increase the frequency and intensity of exposure to natural hazards. Working at the intersection of natural resource management and emergency response, wildland firefighters have multidimensional careers that often incorporate elements from disparate fields to accomplish the tasks of suppressing and preventing wildfires. Thus, they have distinctly different job duties than other firefighters (e.g., structural firefighters) and experience environmental health risks that are unique to their work. We conducted a systematic scoping review of scientific literature that addresses wildland firefighter environmental health. Our goal was to identify studies that specifically addressed wildland firefighters (as opposed to firefighters in a broader sense), geographic and demographic trends, sample sizes, patterns in analysis, and common categories of research. Most studies have clustered in a few highly developed countries, and in the United States within California and Idaho. Many studies fail to consider the impact that demographic factors may have on their results. The number of studies published annually is increasing and themes are broadening to include social and psychological topics; however, most authors in the field have published an average of < 3 articles. We identify three areas that we believe are imminent priorities for researchers and policymakers, including a lack of diversity in study geography and demography, a need for more complex and interactive analyses of exposure, and prioritization of wildland firefighters in research funding and focus.
{"title":"Environmental health of wildland firefighters: a scoping review","authors":"M. Bryan Held, Miranda Rose Ragland, Sage Wood, Amelia Pearson, Seth Wayne Pearson, Olivia Chenevert, Rachel Marie Granberg, Robin Michelle Verble","doi":"10.1186/s42408-023-00235-x","DOIUrl":"https://doi.org/10.1186/s42408-023-00235-x","url":null,"abstract":"Wildland firefighters are likely to experience heightened risks to safety, health, and overall well-being as changing climates increase the frequency and intensity of exposure to natural hazards. Working at the intersection of natural resource management and emergency response, wildland firefighters have multidimensional careers that often incorporate elements from disparate fields to accomplish the tasks of suppressing and preventing wildfires. Thus, they have distinctly different job duties than other firefighters (e.g., structural firefighters) and experience environmental health risks that are unique to their work. We conducted a systematic scoping review of scientific literature that addresses wildland firefighter environmental health. Our goal was to identify studies that specifically addressed wildland firefighters (as opposed to firefighters in a broader sense), geographic and demographic trends, sample sizes, patterns in analysis, and common categories of research. Most studies have clustered in a few highly developed countries, and in the United States within California and Idaho. Many studies fail to consider the impact that demographic factors may have on their results. The number of studies published annually is increasing and themes are broadening to include social and psychological topics; however, most authors in the field have published an average of < 3 articles. We identify three areas that we believe are imminent priorities for researchers and policymakers, including a lack of diversity in study geography and demography, a need for more complex and interactive analyses of exposure, and prioritization of wildland firefighters in research funding and focus.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"39 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139689004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-30DOI: 10.1186/s42408-024-00248-0
Kerryn Little, Laura J Graham, Mike Flannigan, Claire M Belcher, Nicholas Kettridge
Cross-landscape fuel moisture content is highly variable but not considered in existing fire danger assessments. Capturing fuel moisture complexity and its associated controls is critical for understanding wildfire behavior and danger in emerging fire-prone environments that are influenced by local heterogeneity. This is particularly true for temperate heathland and peatland landscapes that exhibit spatial differences in the vulnerability of their globally important carbon stores to wildfire. Here we quantified the range of variability in the live and dead fuel moisture of Calluna vulgaris across a temperate fire-prone landscape through an intensive fuel moisture sampling campaign conducted in the North Yorkshire Moors, UK. We also evaluated the landscape (soil texture, canopy age, aspect, and slope) and micrometeorological (temperature, relative humidity, vapor pressure deficit, and windspeed) drivers of landscape fuel moisture variability for temperate heathlands and peatlands for the first time. We observed high cross-landscape fuel moisture variation, which created a spatial discontinuity in the availability of live fuels for wildfire spread (fuel moisture < 65%) and vulnerability of the organic layer to smoldering combustion (fuel moisture < 250%). This heterogeneity was most important in spring, which is also the peak wildfire season in these temperate ecosystems. Landscape and micrometeorological factors explained up to 72% of spatial fuel moisture variation and were season- and fuel-layer-dependent. Landscape factors predominantly controlled spatial fuel moisture content beyond modifying local micrometeorology. Accounting for direct landscape–fuel moisture relationships could improve fuel moisture estimates, as existing estimates derived solely from micrometeorological observations will exclude the underlying influence of landscape characteristics. We hypothesize that differences in soil texture, canopy age, and aspect play important roles across the fuel layers examined, with the main differences in processes arising between live, dead, and surface/ground fuels. We also highlight the critical role of fuel phenology in assessing landscape fuel moisture variations in temperate environments. Understanding the mechanisms driving fuel moisture variability opens opportunities to develop locally robust fuel models for input into wildfire danger rating systems, adding versatility to wildfire danger assessments as a management tool.
{"title":"Landscape controls on fuel moisture variability in fire-prone heathland and peatland landscapes","authors":"Kerryn Little, Laura J Graham, Mike Flannigan, Claire M Belcher, Nicholas Kettridge","doi":"10.1186/s42408-024-00248-0","DOIUrl":"https://doi.org/10.1186/s42408-024-00248-0","url":null,"abstract":"Cross-landscape fuel moisture content is highly variable but not considered in existing fire danger assessments. Capturing fuel moisture complexity and its associated controls is critical for understanding wildfire behavior and danger in emerging fire-prone environments that are influenced by local heterogeneity. This is particularly true for temperate heathland and peatland landscapes that exhibit spatial differences in the vulnerability of their globally important carbon stores to wildfire. Here we quantified the range of variability in the live and dead fuel moisture of Calluna vulgaris across a temperate fire-prone landscape through an intensive fuel moisture sampling campaign conducted in the North Yorkshire Moors, UK. We also evaluated the landscape (soil texture, canopy age, aspect, and slope) and micrometeorological (temperature, relative humidity, vapor pressure deficit, and windspeed) drivers of landscape fuel moisture variability for temperate heathlands and peatlands for the first time. We observed high cross-landscape fuel moisture variation, which created a spatial discontinuity in the availability of live fuels for wildfire spread (fuel moisture < 65%) and vulnerability of the organic layer to smoldering combustion (fuel moisture < 250%). This heterogeneity was most important in spring, which is also the peak wildfire season in these temperate ecosystems. Landscape and micrometeorological factors explained up to 72% of spatial fuel moisture variation and were season- and fuel-layer-dependent. Landscape factors predominantly controlled spatial fuel moisture content beyond modifying local micrometeorology. Accounting for direct landscape–fuel moisture relationships could improve fuel moisture estimates, as existing estimates derived solely from micrometeorological observations will exclude the underlying influence of landscape characteristics. We hypothesize that differences in soil texture, canopy age, and aspect play important roles across the fuel layers examined, with the main differences in processes arising between live, dead, and surface/ground fuels. We also highlight the critical role of fuel phenology in assessing landscape fuel moisture variations in temperate environments. Understanding the mechanisms driving fuel moisture variability opens opportunities to develop locally robust fuel models for input into wildfire danger rating systems, adding versatility to wildfire danger assessments as a management tool.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"11 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-30DOI: 10.1186/s42408-024-00247-1
Gregory J. Nowacki, Melissa A. Thomas-Van Gundy
Understanding past fire environments is vitally important for applying silvicultural treatments, which often include prescribed burning to restore fire-dependent ecosystems. We have developed a novel method by which witness trees can be used as pyro-indicators to map past fire environments. The stepwise process first involves partitioning witness trees into two classes, pyrophobic and pyrophilic, based on their known ecophysiological traits. Pyrophilic percentages are then calculated at survey corners by dividing the number of pyrophilic trees by the total number of trees. Next, statistical spatial interpolation is applied to this point-based data set to produce a continuous response surface of pyrophilic percentages. The resultant maps capture gradients of fire importance across the pre-European-settlement landscape, which can be coupled with historic fire regime maps, thus providing additional information for better understanding and explaining past fire environments. We have applied this technique to various available witness-tree databases across the eastern United States. This paper serves as a compendium of our collective work to date.
{"title":"Using witness trees as pyro-indicators to depict past fire environments across the eastern United States","authors":"Gregory J. Nowacki, Melissa A. Thomas-Van Gundy","doi":"10.1186/s42408-024-00247-1","DOIUrl":"https://doi.org/10.1186/s42408-024-00247-1","url":null,"abstract":"Understanding past fire environments is vitally important for applying silvicultural treatments, which often include prescribed burning to restore fire-dependent ecosystems. We have developed a novel method by which witness trees can be used as pyro-indicators to map past fire environments. The stepwise process first involves partitioning witness trees into two classes, pyrophobic and pyrophilic, based on their known ecophysiological traits. Pyrophilic percentages are then calculated at survey corners by dividing the number of pyrophilic trees by the total number of trees. Next, statistical spatial interpolation is applied to this point-based data set to produce a continuous response surface of pyrophilic percentages. The resultant maps capture gradients of fire importance across the pre-European-settlement landscape, which can be coupled with historic fire regime maps, thus providing additional information for better understanding and explaining past fire environments. We have applied this technique to various available witness-tree databases across the eastern United States. This paper serves as a compendium of our collective work to date.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"50 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-29DOI: 10.1186/s42408-023-00243-x
Caitlin C. Bloomer, Christopher M. Miller, Robert J. DiStefano, Christopher A. Taylor
Prescribed burning is used to duplicate natural, pre-settlement prairie successional processes. It is an essential and commonly used tool to promote and protect biodiversity and enhance ecosystem function in tallgrass prairie remnants throughout the midwestern United States. The responses to prescribed burns vary widely among faunal groups. We conducted the first study into the response of the prairie crayfish (Procambarus gracilis Bundy) to periodic prescribed burns and other management activities in a tallgrass prairie in Northern Missouri. This species relies on natural and restored prairies across its broad distribution, but little is known on how to actively manage these populations. We found that the density of the prairie crayfish burrows did not vary in response to the burn regime; however, other management activities like the installation of artificial ponds for amphibians and reptiles were directly benefitting this species. Observations indicate that prairie crayfish may also show positive associations with warm-season grass stands and vegetation management should be further explored. The current prairie management practices for vegetation, quail, and herpetofauna are having beneficial or neutral effects on non-target taxa like the prairie crayfish. The value of crayfish and their burrows in prairies is well-established. Conservation biologists should continue to examine how burrowing crayfish are responding to management practices for other taxa to explicitly manage and promote these populations.
{"title":"Midwest prairie management practices benefit the non-target prairie crayfish","authors":"Caitlin C. Bloomer, Christopher M. Miller, Robert J. DiStefano, Christopher A. Taylor","doi":"10.1186/s42408-023-00243-x","DOIUrl":"https://doi.org/10.1186/s42408-023-00243-x","url":null,"abstract":"Prescribed burning is used to duplicate natural, pre-settlement prairie successional processes. It is an essential and commonly used tool to promote and protect biodiversity and enhance ecosystem function in tallgrass prairie remnants throughout the midwestern United States. The responses to prescribed burns vary widely among faunal groups. We conducted the first study into the response of the prairie crayfish (Procambarus gracilis Bundy) to periodic prescribed burns and other management activities in a tallgrass prairie in Northern Missouri. This species relies on natural and restored prairies across its broad distribution, but little is known on how to actively manage these populations. We found that the density of the prairie crayfish burrows did not vary in response to the burn regime; however, other management activities like the installation of artificial ponds for amphibians and reptiles were directly benefitting this species. Observations indicate that prairie crayfish may also show positive associations with warm-season grass stands and vegetation management should be further explored. The current prairie management practices for vegetation, quail, and herpetofauna are having beneficial or neutral effects on non-target taxa like the prairie crayfish. The value of crayfish and their burrows in prairies is well-established. Conservation biologists should continue to examine how burrowing crayfish are responding to management practices for other taxa to explicitly manage and promote these populations.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"4 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-29DOI: 10.1186/s42408-023-00244-w
Kelsey Copes-Gerbitz, Ira J. Sutherland, Sarah Dickson-Hoyle, Jennifer N. Baron, Pablo Gonzalez-Moctezuma, Morgan A. Crowley, Katherine A. Kitchens, Tahia Devisscher, Judith Burr
Managing landscape fire is a complex challenge because it is simultaneously necessary for, and increasingly poses a risk to, societies and ecosystems worldwide. This challenge underscores the need for transformative change in the way societies live with and manage fire. While researchers have the potential to act as agents of transformative change, in practice, the ability to affect change is often constrained by siloed and biased expertise, rigid decision-making institutions, and increasingly vulnerable social-ecological systems where urgent rather than long-term solutions are prioritized. Addressing these challenges requires more holistic and equitable approaches to fire research that promote new models of transdisciplinary thinking, collaboration, and practice. To advance transformative solutions to this complex fire challenge, we propose four principles for conducting transdisciplinary fire research: (1) embrace complexity, (2) promote diverse ways of knowing fire, (3) foster transformative learning, and (4) practice problem-centered research. These principles emerged from our experience as a group of early-career researchers who are embedded within and motivated by today’s complex fire challenge within British Columbia (BC), Canada. In this forum piece, we first describe the four principles and then apply the principles to two case studies: (1) BC, a settler-colonial context experiencing increased size, severity, and impacts of wildfires, and (2) our ECR discussion group, a space of collective learning and transformation. In doing so, we present a unique contribution that builds on existing efforts to develop more holistic fire research frameworks and demonstrates how application of these principles can promote transdisciplinary research and transformation towards coexistence with fire, from local to global scales. In this forum piece, we identify and apply four guiding principles for transdisciplinary fire research. Collectively, these principles can foster more inclusive applied fire research that matches the scope and scale of today’s fire challenge and promotes transformative change towards coexisting with fire.
{"title":"Guiding principles for transdisciplinary and transformative fire research","authors":"Kelsey Copes-Gerbitz, Ira J. Sutherland, Sarah Dickson-Hoyle, Jennifer N. Baron, Pablo Gonzalez-Moctezuma, Morgan A. Crowley, Katherine A. Kitchens, Tahia Devisscher, Judith Burr","doi":"10.1186/s42408-023-00244-w","DOIUrl":"https://doi.org/10.1186/s42408-023-00244-w","url":null,"abstract":"Managing landscape fire is a complex challenge because it is simultaneously necessary for, and increasingly poses a risk to, societies and ecosystems worldwide. This challenge underscores the need for transformative change in the way societies live with and manage fire. While researchers have the potential to act as agents of transformative change, in practice, the ability to affect change is often constrained by siloed and biased expertise, rigid decision-making institutions, and increasingly vulnerable social-ecological systems where urgent rather than long-term solutions are prioritized. Addressing these challenges requires more holistic and equitable approaches to fire research that promote new models of transdisciplinary thinking, collaboration, and practice. To advance transformative solutions to this complex fire challenge, we propose four principles for conducting transdisciplinary fire research: (1) embrace complexity, (2) promote diverse ways of knowing fire, (3) foster transformative learning, and (4) practice problem-centered research. These principles emerged from our experience as a group of early-career researchers who are embedded within and motivated by today’s complex fire challenge within British Columbia (BC), Canada. In this forum piece, we first describe the four principles and then apply the principles to two case studies: (1) BC, a settler-colonial context experiencing increased size, severity, and impacts of wildfires, and (2) our ECR discussion group, a space of collective learning and transformation. In doing so, we present a unique contribution that builds on existing efforts to develop more holistic fire research frameworks and demonstrates how application of these principles can promote transdisciplinary research and transformation towards coexistence with fire, from local to global scales. In this forum piece, we identify and apply four guiding principles for transdisciplinary fire research. Collectively, these principles can foster more inclusive applied fire research that matches the scope and scale of today’s fire challenge and promotes transformative change towards coexisting with fire.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"4 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-26DOI: 10.1186/s42408-023-00236-w
Faiza Qayyum, Harun Jamil, Tariq Alsboui, Mohammad Hijjawi
Understanding the intricacies of wildfire impact across diverse geographical landscapes necessitates a nuanced comprehension of fire dynamics and areas of vulnerability, particularly in regions prone to high wildfire risks. Machine learning (ML) stands as a formidable ally in addressing the complexities associated with predicting and mapping these risks, offering advanced analytical capabilities. Nevertheless, the reliability of such ML approaches is heavily contingent on the integrity of data and the robustness of training protocols. The scientific community has raised concerns about the transparency and interpretability of ML models in the context of wildfire management, recognizing the need for these models to be both accurate and understandable. The often-opaque nature of complex ML algorithms can obscure the rationale behind their outputs, making it imperative to prioritize clarity and interpretability to ensure that model predictions are not only precise but also actionable. Furthermore, a thorough evaluation of model performance must account for multiple critical factors to ensure the utility and dependability of the results in practical wildfire suppression and management strategies. This study unveils a sophisticated spatial deep learning framework grounded in TabNet technology, tailored specifically for delineating areas susceptible to wildfires. To elucidate the predictive interplay between the model’s outputs and the contributing variables across a spectrum of inputs, we embark on an exhaustive analysis using SHapley Additive exPlanations (SHAP). This approach affords a granular understanding of how individual features sway the model’s predictions. Furthermore, the robustness of the predictive model is rigorously validated through 5-fold cross-validation techniques, ensuring the dependability of the findings. The research meticulously investigates the spatial heterogeneity of wildfire susceptibility within the designated study locale, unearthing pivotal insights into the nuanced fabric of fire risk that is distinctly local in nature. Utilizing SHapley Additive exPlanations (SHAP) visualizations, this research meticulously identifies key variables, quantifies their importance, and demystifies the decision-making mechanics of the model. Critical factors, including temperature, elevation, the Normalized Difference Vegetation Index (NDVI), aspect, and wind speed, are discerned to have significant sway over the predictions of wildfire susceptibility. The findings of this study accentuate the criticality of transparency in modeling, which facilitates a deeper understanding of wildfire risk factors. By shedding light on the significant predictors within the models, this work enhances our ability to interpret complex predictive models and drives forward the field of wildfire risk management, ultimately contributing to the development of more effective prevention and mitigation strategies.
要了解野火在不同地理地貌中产生的错综复杂的影响，就必须对火灾动态和易发地区有细致入微的了解，尤其是在野火风险较高的地区。机器学习（ML）提供了先进的分析能力，是解决与预测和绘制这些风险相关的复杂问题的强大盟友。然而，此类 ML 方法的可靠性在很大程度上取决于数据的完整性和训练协议的稳健性。科学界对野火管理背景下的 ML 模型的透明度和可解释性表示担忧，认为这些模型既要准确又要易于理解。复杂的 ML 算法往往具有模糊性，可能会掩盖其输出结果背后的原理，因此必须优先考虑清晰度和可解释性，以确保模型预测不仅准确，而且可操作。此外，对模型性能的全面评估必须考虑多个关键因素，以确保结果在实际野火扑救和管理策略中的实用性和可靠性。本研究揭示了一个基于 TabNet 技术的复杂空间深度学习框架，该框架专为划定易受野火影响的区域而量身定制。为了阐明该模型的输出结果与各种输入变量之间的预测性相互作用，我们使用 SHapley Additive exPlanations（SHAP）进行了详尽的分析。通过这种方法，我们可以详细了解各个特征是如何影响模型预测的。此外，预测模型的稳健性还通过 5 倍交叉验证技术得到了严格验证，从而确保了研究结果的可靠性。该研究对指定研究区域内野火易发性的空间异质性进行了细致的调查，揭示了具有鲜明地方特色的火灾风险的细微结构。利用 SHapley Additive exPlanations（SHAP）可视化技术，这项研究细致地确定了关键变量，量化了这些变量的重要性，并揭开了模型决策机制的神秘面纱。研究发现，温度、海拔、归一化植被指数 (NDVI)、方位和风速等关键因素对野火易感性的预测具有重要影响。这项研究的结果突出了建模透明度的重要性，有助于加深对野火风险因素的理解。通过揭示模型中的重要预测因素，这项工作提高了我们解释复杂预测模型的能力，推动了野火风险管理领域的发展，最终有助于制定更有效的预防和缓解策略。
{"title":"Wildfire risk exploration: leveraging SHAP and TabNet for precise factor analysis","authors":"Faiza Qayyum, Harun Jamil, Tariq Alsboui, Mohammad Hijjawi","doi":"10.1186/s42408-023-00236-w","DOIUrl":"https://doi.org/10.1186/s42408-023-00236-w","url":null,"abstract":"Understanding the intricacies of wildfire impact across diverse geographical landscapes necessitates a nuanced comprehension of fire dynamics and areas of vulnerability, particularly in regions prone to high wildfire risks. Machine learning (ML) stands as a formidable ally in addressing the complexities associated with predicting and mapping these risks, offering advanced analytical capabilities. Nevertheless, the reliability of such ML approaches is heavily contingent on the integrity of data and the robustness of training protocols. The scientific community has raised concerns about the transparency and interpretability of ML models in the context of wildfire management, recognizing the need for these models to be both accurate and understandable. The often-opaque nature of complex ML algorithms can obscure the rationale behind their outputs, making it imperative to prioritize clarity and interpretability to ensure that model predictions are not only precise but also actionable. Furthermore, a thorough evaluation of model performance must account for multiple critical factors to ensure the utility and dependability of the results in practical wildfire suppression and management strategies. This study unveils a sophisticated spatial deep learning framework grounded in TabNet technology, tailored specifically for delineating areas susceptible to wildfires. To elucidate the predictive interplay between the model’s outputs and the contributing variables across a spectrum of inputs, we embark on an exhaustive analysis using SHapley Additive exPlanations (SHAP). This approach affords a granular understanding of how individual features sway the model’s predictions. Furthermore, the robustness of the predictive model is rigorously validated through 5-fold cross-validation techniques, ensuring the dependability of the findings. The research meticulously investigates the spatial heterogeneity of wildfire susceptibility within the designated study locale, unearthing pivotal insights into the nuanced fabric of fire risk that is distinctly local in nature. Utilizing SHapley Additive exPlanations (SHAP) visualizations, this research meticulously identifies key variables, quantifies their importance, and demystifies the decision-making mechanics of the model. Critical factors, including temperature, elevation, the Normalized Difference Vegetation Index (NDVI), aspect, and wind speed, are discerned to have significant sway over the predictions of wildfire susceptibility. The findings of this study accentuate the criticality of transparency in modeling, which facilitates a deeper understanding of wildfire risk factors. By shedding light on the significant predictors within the models, this work enhances our ability to interpret complex predictive models and drives forward the field of wildfire risk management, ultimately contributing to the development of more effective prevention and mitigation strategies.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"58 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-26DOI: 10.1186/s42408-024-00246-2
Maral Bashirzadeh, Mehdi Abedi, Mohammad Farzam
Plant-plant interactions are among the most important factors affecting the natural recovery of vegetation. While the impacts of nurse plants on species composition and biodiversity are well documented, the effects of different nurse’s growth forms on all biodiversity components including taxonomic, functional, and phylogenetic diversity have been less studied and compared, especially for their effects on different times after fire disturbance. This research was focused on comparing the effects of a perennial grass (Elymus hispidens), a perennial herb (Phlomis cancellata), and a high shrub species (Lonicera nummulariifolia) on species composition and the biodiversity components, and how these impacts change across five sites with short-term (1 and 4 years sites), long-term (10 and 20 years sites) times since last fire and a control site where no fire was known in recorded history in semi-arid shrublands of Fereizi Chenaran located in Northeast of Iran. The changes of species composition and taxonomic, functional, and phylogenetic diversity were calculated with respect to the presence/absence of nurse’s growth forms, fire history, and their interactions. Nurse shrubs affected species composition and all biodiversity components, whereas all indices were reduced when considering Elymus grass as nurse plant. On the other hand, the herb Phlomis enhanced species composition and taxonomic diversity, while it had a negative effect on functional and phylogenetic diversity. Such specific effects of nurse types were mostly observed under long timescales (i.e., 10- and 20-year sites). Interestingly, the relative importance of nurse types and time since the last fire largely explained the variation of species composition and biodiversity components, with larger effects of nurse types on all biodiversity components. However, we found a significant contribution of fire explaining variation of species composition and phylogenetic diversity. These results indicated nurse plants can affect the post-fire recovery of vegetation by providing specific mechanisms controlling beneficiary relatedness depending on their growth forms and time scales since the last fire. Therefore, these findings suggest perennial plants in the form of nurse species as a useful factor to develop techniques of active restoration in burned ecosystems.
{"title":"Plant-plant interactions influence post-fire recovery depending on fire history and nurse growth form","authors":"Maral Bashirzadeh, Mehdi Abedi, Mohammad Farzam","doi":"10.1186/s42408-024-00246-2","DOIUrl":"https://doi.org/10.1186/s42408-024-00246-2","url":null,"abstract":"Plant-plant interactions are among the most important factors affecting the natural recovery of vegetation. While the impacts of nurse plants on species composition and biodiversity are well documented, the effects of different nurse’s growth forms on all biodiversity components including taxonomic, functional, and phylogenetic diversity have been less studied and compared, especially for their effects on different times after fire disturbance. This research was focused on comparing the effects of a perennial grass (Elymus hispidens), a perennial herb (Phlomis cancellata), and a high shrub species (Lonicera nummulariifolia) on species composition and the biodiversity components, and how these impacts change across five sites with short-term (1 and 4 years sites), long-term (10 and 20 years sites) times since last fire and a control site where no fire was known in recorded history in semi-arid shrublands of Fereizi Chenaran located in Northeast of Iran. The changes of species composition and taxonomic, functional, and phylogenetic diversity were calculated with respect to the presence/absence of nurse’s growth forms, fire history, and their interactions. Nurse shrubs affected species composition and all biodiversity components, whereas all indices were reduced when considering Elymus grass as nurse plant. On the other hand, the herb Phlomis enhanced species composition and taxonomic diversity, while it had a negative effect on functional and phylogenetic diversity. Such specific effects of nurse types were mostly observed under long timescales (i.e., 10- and 20-year sites). Interestingly, the relative importance of nurse types and time since the last fire largely explained the variation of species composition and biodiversity components, with larger effects of nurse types on all biodiversity components. However, we found a significant contribution of fire explaining variation of species composition and phylogenetic diversity. These results indicated nurse plants can affect the post-fire recovery of vegetation by providing specific mechanisms controlling beneficiary relatedness depending on their growth forms and time scales since the last fire. Therefore, these findings suggest perennial plants in the form of nurse species as a useful factor to develop techniques of active restoration in burned ecosystems.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"14 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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