As a key representative of ‘nature’ in cities, domestic gardens are the subject of research in several disciplines, including urban ecology and urban agriculture. However, the potential conflicts between two distinct objectives for domestic gardeners, wild biodiversity conservation and vegetable production, are rarely examined. In this study, we investigate whether and how growing vegetables relates to the conservation of biodiversity in domestic gardens. We approached this question using two complementary methods: a nationwide online survey assessing the perceptions and practices of a stratified sample of French gardeners, and a smaller-scale study combining survey data with ecological monitoring of domestic gardens in a suburban area near Paris.
Vegetable gardening remains a common practice in France, with 67% of nationwide surveyed gardeners having a vegetable garden (‘Vegetable gardeners’). Our results revealed no significant conflict between vegetable production and biodiversity conservation among French gardeners. On the contrary, several synergies emerged, particularly in the attitudes of vegetable gardeners, whose commitment to their gardens, the wild species within them, and nature as a whole appeared stronger than that of other gardeners. Synergies also appeared in their practices, such as more frequent planting, which may increase the diversity of ornamental flowers and provide resources for pollinating insects. Our study shows how vegetable gardening is associated with distinct practices, although their effects on biodiversity are neither clearly synergistic nor antagonistic. It thus argues for a more rigorous consideration of food production in urban ecology research on domestic gardens.
{"title":"Growing vegetables: A gateway to biodiversity in domestic gardens?","authors":"Blanche Collard, Quentin Dutertre, Emmanuelle Baudry","doi":"10.1016/j.landurbplan.2025.105520","DOIUrl":"10.1016/j.landurbplan.2025.105520","url":null,"abstract":"<div><div>As a key representative of ‘nature’ in cities, domestic gardens are the subject of research in several disciplines, including urban ecology and urban agriculture. However, the potential conflicts between two distinct objectives for domestic gardeners, wild biodiversity conservation and vegetable production, are rarely examined. In this study, we investigate whether and how growing vegetables relates to the conservation of biodiversity in domestic gardens. We approached this question using two complementary methods: a nationwide online survey assessing the perceptions and practices of a stratified sample of French gardeners, and a smaller-scale study combining survey data with ecological monitoring of domestic gardens in a suburban area near Paris.</div><div>Vegetable gardening remains a common practice in France, with 67% of nationwide surveyed gardeners having a vegetable garden (‘Vegetable gardeners’). Our results revealed no significant conflict between vegetable production and biodiversity conservation among French gardeners. On the contrary, several synergies emerged, particularly in the attitudes of vegetable gardeners, whose commitment to their gardens, the wild species within them, and nature as a whole appeared stronger than that of other gardeners. Synergies also appeared in their practices, such as more frequent planting, which may increase the diversity of ornamental flowers and provide resources for pollinating insects. Our study shows how vegetable gardening is associated with distinct practices, although their effects on biodiversity are neither clearly synergistic nor antagonistic. It thus argues for a more rigorous consideration of food production in urban ecology research on domestic gardens.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105520"},"PeriodicalIF":9.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145261705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-10-10DOI: 10.1016/j.landurbplan.2025.105504
Richelle L. Winkler, Ella Brodowski, Kathy Huerta Sanchez, Kari B. Henquinet, Julia Petersen
This paper used a mixed methods approach to examine whether socially vulnerable populations near U.S. National Forest lands received fuel treatments to reduce wildfire risk. We tested whether the location of recent treatments was related to neighborhood demographics using logistic regression with a National Forest level random intercept and regional fixed effects. Findings showed differential outcomes by race/ethnicity and tribal governance. Tribal lands were about half as likely to be treated, after controlling for biophysical risk, urbanity, land area, National Forest, and region. Neighborhoods with relatively high shares of Hispanic and Black populations were also associated with lower likelihoods of fuel treatment, compared to blocks with lower concentrations of these populations. Qualitative findings from interviews with forest managers, field work, and coding relevant government documents suggested several potential explanations. Resources for doing fuel treatments were limited, and decisions about where to do them were complex, balancing multiple priorities. Forest land management plans, environmental conditions, and environmental regulations guided decision-making about where to do fuel treatments, yet managers had discretion in prioritizing treatment locations. We found no consistent process for integrating social vulnerability– whether and how managers considered vulnerability depended on their personalities, background, and relationships. Some managers dismissed or diminished the importance of considering vulnerability, while others felt there was too much uncertainty and not enough information available to be able to consider populations that might face special risks. Decisions were often made in cooperation with already-invested partners who were knowledgeable about fire risk and could share resources, which may have directed federal resources towards relatively privileged neighborhoods.
{"title":"Examining equity in fuel treatments for wildfire risk mitigation in the United States Forest Service","authors":"Richelle L. Winkler, Ella Brodowski, Kathy Huerta Sanchez, Kari B. Henquinet, Julia Petersen","doi":"10.1016/j.landurbplan.2025.105504","DOIUrl":"10.1016/j.landurbplan.2025.105504","url":null,"abstract":"<div><div>This paper used a mixed methods approach to examine whether socially vulnerable populations near U.S. National Forest lands received fuel treatments to reduce wildfire risk. We tested whether the location of recent treatments was related to neighborhood demographics using logistic regression with a National Forest level random intercept and regional fixed effects. Findings showed differential outcomes by race/ethnicity and tribal governance. Tribal lands were about half as likely to be treated, after controlling for biophysical risk, urbanity, land area, National Forest, and region. Neighborhoods with relatively high shares of Hispanic and Black populations were also associated with lower likelihoods of fuel treatment, compared to blocks with lower concentrations of these populations. Qualitative findings from interviews with forest managers, field work, and coding relevant government documents suggested several potential explanations. Resources for doing fuel treatments were limited, and decisions about where to do them were complex, balancing multiple priorities. Forest land management plans, environmental conditions, and environmental regulations guided decision-making about where to do fuel treatments, yet managers had discretion in prioritizing treatment locations. We found no consistent process for integrating social vulnerability– whether and how managers considered vulnerability depended on their personalities, background, and relationships. Some managers dismissed or diminished the importance of considering vulnerability, while others felt there was too much uncertainty and not enough information available to be able to consider populations that might face special risks. Decisions were often made in cooperation with already-invested partners who were knowledgeable about fire risk and could share resources, which may have directed federal resources towards relatively privileged neighborhoods.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105504"},"PeriodicalIF":9.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145261743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-10-08DOI: 10.1016/j.landurbplan.2025.105518
Christopher J. Dennison , Amber L. Pearson , Jeffrey O. Hanson , Catherine D. Brown , Rachel T. Buxton
In deindustrialized cities, human population decline and building demolitions have created large quantities of vacant land. Land vacancy is a complex social issue but may create habitat that supports wildlife. We explored the relationship between vacant land and other features of the urban landscape and bird diversity and occupancy in Detroit, Michigan. Acoustic recordings were collected annually in June at 110 sites across 11 Detroit neighbourhoods from 2021 to 2024. At each site we manually scanned 28 min of the morning chorus on two days to identify bird species. We compared resulting metrics of species diversity and occupancy with annual spatial data on neighbourhood characteristics including vacancy, vegetation, buildings, and roads measured in 50 m and 100 m buffers around each recording site. Using a mixed-effects modelling approach, we found higher bird species diversity and richness at recording sites surrounded by greater proportions of vacant land (Shannon diversity, βvacantlots100m = 0.08, 95 % CI [0.04, 0.12]; bird species richness, IRRvacantlots100m = 1.08, 95 % CI [1.04, 1.12]). Using a spatial occupancy modelling approach, we found vacant land was associated with higher occurrence of four bird species. However, other urban features, especially roads, were also associated with bird species diversity and occupancy. Our results suggest vacant land can support higher bird diversity and occupancy in Detroit neighbourhoods, while road infrastructure, buildings, and vegetation also play a role. These findings have implications for land management in Detroit and other deindustrialized cities, where there is increasing pressure to determine how vacant land can be used to achieve positive ecological and social outcomes.
{"title":"The role of vacant lots in promoting avian species diversity and occupancy in a post-industrial city","authors":"Christopher J. Dennison , Amber L. Pearson , Jeffrey O. Hanson , Catherine D. Brown , Rachel T. Buxton","doi":"10.1016/j.landurbplan.2025.105518","DOIUrl":"10.1016/j.landurbplan.2025.105518","url":null,"abstract":"<div><div>In deindustrialized cities, human population decline and building demolitions have created large quantities of vacant land. Land vacancy is a complex social issue but may create habitat that supports wildlife. We explored the relationship between vacant land and other features of the urban landscape and bird diversity and occupancy in Detroit, Michigan. Acoustic recordings were collected annually in June at 110 sites across 11 Detroit neighbourhoods from 2021 to 2024. At each site we manually scanned 28 min of the morning chorus on two days to identify bird species. We compared resulting metrics of species diversity and occupancy with annual spatial data on neighbourhood characteristics including vacancy, vegetation, buildings, and roads measured in 50 m and 100 m buffers around each recording site. Using a mixed-effects modelling approach, we found higher bird species diversity and richness at recording sites surrounded by greater proportions of vacant land (Shannon diversity, β<sub>vacantlots100m</sub> = 0.08, 95 % CI [0.04, 0.12]; bird species richness, IRR<sub>vacantlots100m</sub> = 1.08, 95 % CI [1.04, 1.12]). Using a spatial occupancy modelling approach, we found vacant land was associated with higher occurrence of four bird species. However, other urban features, especially roads, were also associated with bird species diversity and occupancy. Our results suggest vacant land can support higher bird diversity and occupancy in Detroit neighbourhoods, while road infrastructure, buildings, and vegetation also play a role. These findings have implications for land management in Detroit and other deindustrialized cities, where there is increasing pressure to determine how vacant land can be used to achieve positive ecological and social outcomes.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105518"},"PeriodicalIF":9.2,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145261709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-10-07DOI: 10.1016/j.landurbplan.2025.105519
Yang Xiao, Leiting Cen
This study examines a critical question: Do new urban parks truly enhance green equity? We analyzed urban park developments in Shanghai between 2000 and 2020 to evaluate their impact on spatial green equity. In several areas, newly constructed parks attracted more residents, resulting in increased competition for access within 40.5% of census tracts. A multilevel logistic regression model revealed that in certain contexts, the construction of new parks can actually worsen green equity. Our findings identify the emergence of a new green paradox in China, akin to the Downs-Thomson paradox, in which improvements to public resources inadvertently reduce their accessibility or effectiveness due to rising demand—a phenomenon we term the “green equity paradox.” This outcome underscores the unintended consequences of contemporary urban green space planning practices and highlights the necessity for a more dynamic and equitable approach to achieve genuine spatial equity.
{"title":"Do new urban parks really improve green equity? A longitudinal analysis of Shanghai (2000–2020)","authors":"Yang Xiao, Leiting Cen","doi":"10.1016/j.landurbplan.2025.105519","DOIUrl":"10.1016/j.landurbplan.2025.105519","url":null,"abstract":"<div><div>This study examines a critical question: Do new urban parks truly enhance green equity? We analyzed urban park developments in Shanghai between 2000 and 2020 to evaluate their impact on spatial green equity. In several areas, newly constructed parks attracted more residents, resulting in increased competition for access within 40.5% of census tracts. A multilevel logistic regression model revealed that in certain contexts, the construction of new parks can actually worsen green equity. Our findings identify the emergence of a new green paradox in China, akin to the Downs-Thomson paradox, in which improvements to public resources inadvertently reduce their accessibility or effectiveness due to rising demand—a phenomenon we term the “green equity paradox.” This outcome underscores the unintended consequences of contemporary urban green space planning practices and highlights the necessity for a more dynamic and equitable approach to achieve genuine spatial equity.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105519"},"PeriodicalIF":9.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145261738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-10-07DOI: 10.1016/j.landurbplan.2025.105515
Yuxi Zeng , Linsheng Zhong , Yurui Li
Understanding the differences in preferences among ecotourism stakeholders and the resulting landscape use conflicts is crucial for promoting the sustainable development of national parks. This study presents the LUCES framework for identifying key areas in managing landscape use conflicts between tourists, local residents and tour enterprises, using the Yellow-river-source National Park (YNP) as a case study. The results indicate that the potential conflict map corresponds to 74% of the actual conflict locations identified through public participation geographic information systems, confirming the effectiveness of the LUCES framework. The differences in preferences for ecosystem services among the three stakeholder groups significantly influence the formation of conflict patterns. The majority of conflicts (58%) in YNP occur between tourists and local residents, with tourism enterprises aligning with tourists. Only 0.02% of conflicts involve all three groups. Four villages (including Zhalinghu, Jiangpang, Aying, and Tanggema) were identified as key areas for managing landscape use conflicts. This study enhances the identification of landscape use conflicts among stakeholders, deepens the understanding of landscape use conflicts, and supports informed decision-making for effective conflict management and sustainable landscape practices.
{"title":"Identifying key areas of managing landscape use conflicts among ecotourism stakeholders in national parks","authors":"Yuxi Zeng , Linsheng Zhong , Yurui Li","doi":"10.1016/j.landurbplan.2025.105515","DOIUrl":"10.1016/j.landurbplan.2025.105515","url":null,"abstract":"<div><div>Understanding the differences in preferences among ecotourism stakeholders and the resulting landscape use conflicts is crucial for promoting the sustainable development of national parks. This study presents the LUCES framework for identifying key areas in managing landscape use conflicts between tourists, local residents and tour enterprises, using the Yellow-river-source National Park (YNP) as a case study. The results indicate that the potential conflict map corresponds to 74% of the actual conflict locations identified through public participation geographic information systems, confirming the effectiveness of the LUCES framework. The differences in preferences for ecosystem services among the three stakeholder groups significantly influence the formation of conflict patterns. The majority of conflicts (58%) in YNP occur between tourists and local residents, with tourism enterprises aligning with tourists. Only 0.02% of conflicts involve all three groups. Four villages (including Zhalinghu, Jiangpang, Aying, and Tanggema) were identified as key areas for managing landscape use conflicts. This study enhances the identification of landscape use conflicts among stakeholders, deepens the understanding of landscape use conflicts, and supports informed decision-making for effective conflict management and sustainable landscape practices.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105515"},"PeriodicalIF":9.2,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145261817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Understanding urban community novelty can help to predict the rewilding potential of vacant urban spaces, facilitating their integration into biodiverse cities. We tested the hypothesis that cities are composed of different degrees of ecological novelty by studying four urban habitats with differing degrees of management and human legacy: park lawns, roadsides, residential vacant lots, and industrial vacant lots. We focused on community compositional novelty by comparing the plant, fungal and bacterial species composition between urban habitats and two reference pre-urban habitats: forests and meadows. We used a compositional novelty index based on multidimensional ordination, which is straightforward to calculate and only requires species co-occurrence data for urban and reference habitats. As expected, (1) plants displayed the highest novelty and bacteria the lowest; (2) urban communities were markedly different from forests and relatively more similar to meadows; and (3) compositional novelty was highest in industrial lots. Managed park lawns, which we had expected to be highly novel, were relatively close to hay meadows. The lowest novelty was recorded in residential vacant lots, which had biological communities that more closely resembled those of pre-urban habitats. Our results highlight the effect of habitat type as a major driver of urban community composition and novelty. This suggests that city biodiversity can be enhanced by an integrative approach to the urban landscape that favors habitat heterogeneity by passive rewilding of park lawns, non-intervention on residential vacant lots, direct restoration of industrial lots, and conservation of natural and agricultural habitat remnants as sources of native species.
{"title":"Compositional novelty of plant, fungal and bacterial communities across urban habitats","authors":"Eduardo Fernández-Pascual , Zuzana Ferencova , Víctor González-García , Borja Jiménez-Alfaro","doi":"10.1016/j.landurbplan.2025.105517","DOIUrl":"10.1016/j.landurbplan.2025.105517","url":null,"abstract":"<div><div>Understanding urban community novelty can help to predict the rewilding potential of vacant urban spaces, facilitating their integration into biodiverse cities. We tested the hypothesis that cities are composed of different degrees of ecological novelty by studying four urban habitats with differing degrees of management and human legacy: park lawns, roadsides, residential vacant lots, and industrial vacant lots. We focused on community compositional novelty by comparing the plant, fungal and bacterial species composition between urban habitats and two reference pre-urban habitats: forests and meadows. We used a compositional novelty index based on multidimensional ordination, which is straightforward to calculate and only requires species co-occurrence data for urban and reference habitats. As expected, (1) plants displayed the highest novelty and bacteria the lowest; (2) urban communities were markedly different from forests and relatively more similar to meadows; and (3) compositional novelty was highest in industrial lots. Managed park lawns, which we had expected to be highly novel, were relatively close to hay meadows. The lowest novelty was recorded in residential vacant lots, which had biological communities that more closely resembled those of pre-urban habitats. Our results highlight the effect of habitat type as a major driver of urban community composition and novelty. This suggests that city biodiversity can be enhanced by an integrative approach to the urban landscape that favors habitat heterogeneity by passive rewilding of park lawns, non-intervention on residential vacant lots, direct restoration of industrial lots, and conservation of natural and agricultural habitat remnants as sources of native species.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105517"},"PeriodicalIF":9.2,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-09-29DOI: 10.1016/j.landurbplan.2025.105499
Bethany Woo , Samara Fruman , Renato Escobar , Alondra Gallegos , Jasmine Kim , Jana Salomon , Danielle Sonobe , Jeffrey Van , Sahar Derakhshan , Travis Longcore
Climate change, combined with the Urban Heat Island effect, will generate more frequent, intense extreme heat events. These events can induce heat stroke, organ damage, and death, especially in lower-income communities, communities of color, and people with chronic health conditions. Research demonstrates parks mitigate extreme heat and combat Urban Heat Island effects locally. To investigate how parks provide heat relief in Los Angeles County, California, we compared park use on extreme heat and control days from the summer of 2017. Our research uses big spatial datasets from smartphone devices to describe broad park use. We intersected anonymous smartphone geolocation data with county parks and census tract layers, then analyzed how the time of day, day of week, and park amenities influenced visitation. Then, we assigned users location-based social sensitivity indices using nighttime locations to explore demographic influence on park use. We found 1) park attendance decreased during extreme heat, 2) temporal convenience, rather than cooling amenities, influenced park use, and 3) users were more likely to visit parks with similar social sensitivity scores as their residence. Our results highlight the influence of social factors above extreme heat on park user behavior. We recommend that city planners focus on equitably and creatively distributing blue and green cooling amenities to communities (i.e. areas of convenience, common daily routes), rather than enhancing parks specifically.
{"title":"Smartphone location data show park use patterns in extreme heat (Los Angeles, California, USA)","authors":"Bethany Woo , Samara Fruman , Renato Escobar , Alondra Gallegos , Jasmine Kim , Jana Salomon , Danielle Sonobe , Jeffrey Van , Sahar Derakhshan , Travis Longcore","doi":"10.1016/j.landurbplan.2025.105499","DOIUrl":"10.1016/j.landurbplan.2025.105499","url":null,"abstract":"<div><div>Climate change, combined with the Urban Heat Island effect, will generate more frequent, intense extreme heat events. These events can induce heat stroke, organ damage, and death, especially in lower-income communities, communities of color, and people with chronic health conditions. Research demonstrates parks mitigate extreme heat and combat Urban Heat Island effects locally. To investigate how parks provide heat relief in Los Angeles County, California, we compared park use on extreme heat and control days from the summer of 2017. Our research uses big spatial datasets from smartphone devices to describe broad park use. We intersected anonymous smartphone geolocation data with county parks and census tract layers, then analyzed how the time of day, day of week, and park amenities influenced visitation. Then, we assigned users location-based social sensitivity indices using nighttime locations to explore demographic influence on park use. We found 1) park attendance decreased during extreme heat, 2) temporal convenience, rather than cooling amenities, influenced park use, and 3) users were more likely to visit parks with similar social sensitivity scores as their residence. Our results highlight the influence of social factors above extreme heat on park user behavior. We recommend that city planners focus on equitably and creatively distributing blue and green cooling amenities to communities (i.e. areas of convenience, common daily routes), rather than enhancing parks specifically.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105499"},"PeriodicalIF":9.2,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-09-28DOI: 10.1016/j.landurbplan.2025.105503
Ming-kun Chen , Zhen-ru Yang , He Li , Hua Zong , Chen Jiao
Street trees are an important component of urban landscapes and provide diverse ecological and social services to city dwellers. However, allergenic pollen released by street trees also harm human health. During China’s rapid urban expansion, little has been documented about the changes of the composition, diversity, and allergenic risk of street trees. Therefore, the streetscape of the old and new districts in Chengdu City, the first designated “Park City” in China, was selected as the study site of this study. All 502 streets, including 56,125 trees, in the old district and 413 streets, including 70,134 trees, in the new district, were placed into five street categories according to their width for cross-analysis. The two districts exhibited remarkably similar landscape compositions, with 38 shared tree species contributing to a uniform visual interface, though more tree species were recorded in the new district (48 species) compared to the old district (43 species). The per capita number of street trees in the new district was 0.11, exceeding 0.04 in the old district. However, there were no significant differences among the five street categories of the two districts in mean diameter at breast height (DBH), tree height, and α-diversity. T An excess of big trees (DBH ≥ 15.2 cm) was found in the new district. There were significantly fewer Platanus acerifolia and Erythrina variegate in the new district; however, there was a much higher percentage of flowering ornamental trees and colored-leaf trees, especially in precinct and community streets. This reflected the contemporary demands from city dwellers for more colorful and manageable streetscapes. As the street width decreased, the values of the urban green zone allergenicity index (IUGZA) in the new district increased, while IUGZA values were bimodal in the old district. The IUGZA value in the precinct and community streets of the old district greatly exceeded the upper limit of 1.0; the IUGZA value of community streets in the new district also exceeded 1.0. These street categories exhibited a very high allergenic risk of pollen from their tree landscapes. Overall, the new district’s streetscapes exhibited a lower allergenic risk of pollen than the old district due to a reduced proportion of high-VPA (potential allergenicity) tree species, demonstrating clearer health benefits. In addition, Pearson’s correlation analysis identified that tree species richness was the key factor significantly affecting the IUGZA value. Based on these findings, this study suggests that optimizing streetscapes management—such as selecting tree species with low VPA, intensifying crown pruning before flowering seasons, and applying targeted pollen-suppression agents—could further mitigate pollen allergenic risks and enhance urban livability in Chengdu.
{"title":"Changes in tree composition and diversity of streetscapes and their impact on allergenic risk of pollen during urban expansion: a case study in Chengdu, China","authors":"Ming-kun Chen , Zhen-ru Yang , He Li , Hua Zong , Chen Jiao","doi":"10.1016/j.landurbplan.2025.105503","DOIUrl":"10.1016/j.landurbplan.2025.105503","url":null,"abstract":"<div><div>Street trees are an important component of urban landscapes and provide diverse ecological and social services to city dwellers. However, allergenic pollen released by street trees also harm human health. During China’s rapid urban expansion, little has been documented about the changes of the composition, diversity, and allergenic risk of street trees. Therefore, the streetscape of the old and new districts in Chengdu City, the first designated “Park City” in China, was selected as the study site of this study. All 502 streets, including 56,125 trees, in the old district and 413 streets, including 70,134 trees, in the new district, were placed into five street categories according to their width for cross-analysis. The two districts exhibited remarkably similar landscape compositions, with 38 shared tree species contributing to a uniform visual interface, though more tree species were recorded in the new district (48 species) compared to the old district (43 species). The per capita number of street trees in the new district was 0.11, exceeding 0.04 in the old district. However, there were no significant differences among the five street categories of the two districts in mean diameter at breast height (DBH), tree height, and <em>α</em>-diversity. T An excess of big trees (DBH ≥ 15.2 cm) was found in the new district. There were significantly fewer <em>Platanus acerifolia</em> and <em>Erythrina variegate</em> in the new district; however, there was a much higher percentage of flowering ornamental trees and colored-leaf trees, especially in precinct and community streets. This reflected the contemporary demands from city dwellers for more colorful and manageable streetscapes. As the street width decreased, the values of the urban green zone allergenicity index (I<sub>UGZA</sub>) in the new district increased, while I<sub>UGZA</sub> values were bimodal in the old district. The I<sub>UGZA</sub> value in the precinct and community streets of the old district greatly exceeded the upper limit of 1.0; the I<sub>UGZA</sub> value of community streets in the new district also exceeded 1.0. These street categories exhibited a very high allergenic risk of pollen from their tree landscapes. Overall, the new district’s streetscapes exhibited a lower allergenic risk of pollen than the old district due to a reduced proportion of high-VPA (potential allergenicity) tree species, demonstrating clearer health benefits. In addition, Pearson’s correlation analysis identified that tree species richness was the key factor significantly affecting the I<sub>UGZA</sub> value. Based on these findings, this study suggests that optimizing streetscapes management—such as selecting tree species with low VPA, intensifying crown pruning before flowering seasons, and applying targeted pollen-suppression agents—could further mitigate pollen allergenic risks and enhance urban livability in Chengdu.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105503"},"PeriodicalIF":9.2,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145209813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-09-25DOI: 10.1016/j.landurbplan.2025.105502
Eveliina Dunkel , Janina Käyhkö , Adrienne Grêt-Regamey , Christopher M. Raymond
Reaching European climate targets calls for lifestyle changes aligned with the idea of sufficiency – living well with less. Despite increased interest in sufficiency, little research has examined how residents’ acceptance of more sustainable land-uses varies across lifestyles with different levels of sufficiency orientation. The aim of this paper is to examine the relationships between urban lifestyles and socio-political acceptance of land-use changes, including willingness to give up carbon-intensive mobility and housing practices across cities and neighbourhoods in southern Finland. We administered an online survey to a random sample of residents in Helsinki, Lahti and the neighbourhood of Länsiväylä and collected a total of 896 survey responses. Cluster analysis was used to distinguish a set of urban lifestyles that vary in their sufficiency orientation, which were subsequently related to socio-political acceptance of land-use changes. We found that sufficiency-oriented residents often prefer walking and public transport, and they are more likely to accept various land-use changes in support of sustainability outcomes in urban areas. We also found locational differences in the relationships between socio-political acceptance of land use change and lifestyle clusters. Together our findings can help in addressing the pressing environmental challenges in cities in a more targeted way.
{"title":"Integrating sufficiency-oriented lifestyles and socio-political acceptance of land-use changes in urban sustainability transformations","authors":"Eveliina Dunkel , Janina Käyhkö , Adrienne Grêt-Regamey , Christopher M. Raymond","doi":"10.1016/j.landurbplan.2025.105502","DOIUrl":"10.1016/j.landurbplan.2025.105502","url":null,"abstract":"<div><div>Reaching European climate targets calls for lifestyle changes aligned with the idea of sufficiency – living well with less. Despite increased interest in sufficiency, little research has examined how residents’ acceptance of more sustainable land-uses varies across lifestyles with different levels of sufficiency orientation. The aim of this paper is to examine the relationships between urban lifestyles and socio-political acceptance of land-use changes, including willingness to give up carbon-intensive mobility and housing practices across cities and neighbourhoods in southern Finland. We administered an online survey to a random sample of residents in Helsinki, Lahti and the neighbourhood of Länsiväylä and collected a total of 896 survey responses. Cluster analysis was used to distinguish a set of urban lifestyles that vary in their sufficiency orientation, which were subsequently related to socio-political acceptance of land-use changes. We found that sufficiency-oriented residents often prefer walking and public transport, and they are more likely to accept various land-use changes in support of sustainability outcomes in urban areas. We also found locational differences in the relationships between socio-political acceptance of land use change and lifestyle clusters. Together our findings can help in addressing the pressing environmental challenges in cities in a more targeted way.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105502"},"PeriodicalIF":9.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-09-25DOI: 10.1016/j.landurbplan.2025.105498
Yijun Zhang , Ziang Li , Sandra Mandic , Thomas Astell-Burt , J. Aaron Hipp , Hayley McGlashan-Fainu , Jinfeng Zhao , Melody Smith
Greenspace has been linked to adolescent health and well-being outcomes, with physical activity potential pathway for achieving benefits. Robust evidence is needed to inform policymaking and environmental interventions. The aim of this systematic literature review is to identify, summarise, and evaluate studies on the associations between geospatial measures of greenspace (i.e., using geographic information systems (GIS), global positioning systems (GPS)) and moderate-to-vigorous physical activity (MVPA) among adolescents. We followed the PRISMA statement guidelines. Five databases were searched using relevant keywords for articles published from 1980 onwards. Studies were imported to Covidence for duplicate screening, data extraction and quality assessment. Harvest plots were used to visually summarise and examine patterns in relationships between greenspace and adolescent MVPA. Fourteen articles met the inclusion criteria and provided sufficient data to extract associations of greenspace with adolescent MVPA. Seven articles reported positive relationships between greenspace and adolescent MVPA, five reported no significant associations, and two reported inconsistent results. All studies that measure actual greenspace exposure using GPS showed significant positive correlation with adolescents’ MVPA. While positive associations between greenspace and MVPA among adolescents were found in over half (64 %) of the studies included in this review, the number of studies specifically targeting this age group is limited. Exploring which features of greenspace encourage MVPA across different groups and examining the actual use of greenspace is needed. Addressing these gaps will provide more comprehensive evidence to inform policies and environmental strategies aimed at enhancing adolescent health and well-being.
{"title":"Associations of geospatial measures of greenspace with adolescent moderate-to-vigorous physical activity: A systematic review","authors":"Yijun Zhang , Ziang Li , Sandra Mandic , Thomas Astell-Burt , J. Aaron Hipp , Hayley McGlashan-Fainu , Jinfeng Zhao , Melody Smith","doi":"10.1016/j.landurbplan.2025.105498","DOIUrl":"10.1016/j.landurbplan.2025.105498","url":null,"abstract":"<div><div>Greenspace has been linked to adolescent health and well-being outcomes, with physical activity potential pathway for achieving benefits. Robust evidence is needed to inform policymaking and environmental interventions. The aim of this systematic literature review is to identify, summarise, and evaluate studies on the associations between geospatial measures of greenspace (i.e., using geographic information systems (GIS), global positioning systems (GPS)) and moderate-to-vigorous physical activity (MVPA) among adolescents. We followed the PRISMA statement guidelines. Five databases were searched using relevant keywords for articles published from 1980 onwards. Studies were imported to Covidence for duplicate screening, data extraction and quality assessment. Harvest plots were used to visually summarise and examine patterns in relationships between greenspace and adolescent MVPA. Fourteen articles met the inclusion criteria and provided sufficient data to extract associations of greenspace with adolescent MVPA. Seven articles reported positive relationships between greenspace and adolescent MVPA, five reported no significant associations, and two reported inconsistent results. All studies that measure actual greenspace exposure using GPS showed significant positive correlation with adolescents’ MVPA. While positive associations between greenspace and MVPA among adolescents were found in over half (64 %) of the studies included in this review, the number of studies specifically targeting this age group is limited. Exploring which features of greenspace encourage MVPA across different groups and examining the actual use of greenspace is needed. Addressing these gaps will provide more comprehensive evidence to inform policies and environmental strategies aimed at enhancing adolescent health and well-being.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"265 ","pages":"Article 105498"},"PeriodicalIF":9.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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