Zhenggen Fan, Wentong Xia, Hu Yu, Ji Liu, Binghua Liu
Implementing watershed carbon compensation under the constraint of fiscal imbalance is a crucial approach for China to achieve its “dual carbon” goals. Focusing on 257 counties within the Pearl River Basin (PRB), this paper first measured and modified the land use carbon emissions, carbon absorption, and the land use carbon budget (LUCB) from 2005 to 2020. Subsequently, their spatiotemporal patterns and the changes before and after the modifications were analyzed. Finally, this paper determined the subject–object, value, and priority order of carbon compensation using the modified LUCB as the baseline value, and a carbon compensation mechanism that combines vertical and horizontal directions was constructed. The following findings were obtained: (1) At the time scale, the proportion of construction land and forestland in the land use structure increased, and carbon emissions, carbon absorption, and the LUCB showed an overall upward trend from 2005 to 2020. (2) At the spatial scale, the areas with high carbon emissions and carbon deficits were mainly located in the lower reaches of the basin, whereas the areas with high carbon absorption and carbon surpluses were widely distributed in the upper and middle reaches. The carbon deficit in urban municipal districts and resource-based counties was relatively serious. (3) In 2020, the total amount of carbon compensation in the PRB was CNY −8088.61 million. The number of counties that needed to be paid and compensated was 75 and 182, respectively. The carbon compensation mechanism constructed in this paper can provide a reference for other countries and regions with financial imbalances to achieve regional carbon neutrality.
{"title":"Land Use Carbon Budget Pattern and Carbon Compensation Mechanism of Counties in the Pearl River Basin: A Perspective Based on Fiscal Imbalance","authors":"Zhenggen Fan, Wentong Xia, Hu Yu, Ji Liu, Binghua Liu","doi":"10.3390/land13081141","DOIUrl":"https://doi.org/10.3390/land13081141","url":null,"abstract":"Implementing watershed carbon compensation under the constraint of fiscal imbalance is a crucial approach for China to achieve its “dual carbon” goals. Focusing on 257 counties within the Pearl River Basin (PRB), this paper first measured and modified the land use carbon emissions, carbon absorption, and the land use carbon budget (LUCB) from 2005 to 2020. Subsequently, their spatiotemporal patterns and the changes before and after the modifications were analyzed. Finally, this paper determined the subject–object, value, and priority order of carbon compensation using the modified LUCB as the baseline value, and a carbon compensation mechanism that combines vertical and horizontal directions was constructed. The following findings were obtained: (1) At the time scale, the proportion of construction land and forestland in the land use structure increased, and carbon emissions, carbon absorption, and the LUCB showed an overall upward trend from 2005 to 2020. (2) At the spatial scale, the areas with high carbon emissions and carbon deficits were mainly located in the lower reaches of the basin, whereas the areas with high carbon absorption and carbon surpluses were widely distributed in the upper and middle reaches. The carbon deficit in urban municipal districts and resource-based counties was relatively serious. (3) In 2020, the total amount of carbon compensation in the PRB was CNY −8088.61 million. The number of counties that needed to be paid and compensated was 75 and 182, respectively. The carbon compensation mechanism constructed in this paper can provide a reference for other countries and regions with financial imbalances to achieve regional carbon neutrality.","PeriodicalId":508186,"journal":{"name":"Land","volume":"50 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141805078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The coordination and stability of the regional economy (RE) and ecological quality (EQ) are essential for the synergistic development of the Beijing–Tianjin–Hebei urban agglomeration (BTH). In this paper, based on remote sensing data and economic statistics data, this paper analysed the current situation and evolution of the RE and EQ in the BTH region. Based on the coupled coordination degree (CCD) model, this paper has developed an evaluative framework and quantifies the spatiotemporal coupled coordination of the RE and EQ in the BTH region from 2000 to 2020. The results show that: (1) in 2020, the GDP of the poverty-stricken counties (PSCs) around BTH accounted for 4.57% of the total BTH region, and the area of high-quality ecosystems, Net Primary Productivity (NPP), soil conservation, water conservation, and sand fixation accounted for more than 40% of the total BTH region; (2) the GDP growth of the PSCs accounted for 4.45% of the total growth in BTH, the reduced area of high-quality ecosystems accounted for 21.04%, and the increase in NPP, soil conservation, water conservation, and sand fixation accounted for more than 40% of the total growth in the BTH region; (3) the CCD of the RE and EQ in the BTH region showed a tendency to increase, but the gap between the regions gradually expanded, and the development type changed from a lagging RE to a lagging EQ, in which the coupled coordination grade of the PSCs was in a dissonance stage for a long time, and the level of economic development had to improve. Deepening the understanding of the spatiotemporal coupling relationship between the RE and EQ and adopting appropriate development policies is of great significance for achieving the coordinated and integrated development of the BTH region.
{"title":"Spatiotemporal Analysis of Economic and Ecological Coupled Coordination: A Case Study of the Beijing–Tianjin–Hebei Urban Agglomeration","authors":"Rigala Na, Xinliang Xu, Shihao Wang","doi":"10.3390/land13081138","DOIUrl":"https://doi.org/10.3390/land13081138","url":null,"abstract":"The coordination and stability of the regional economy (RE) and ecological quality (EQ) are essential for the synergistic development of the Beijing–Tianjin–Hebei urban agglomeration (BTH). In this paper, based on remote sensing data and economic statistics data, this paper analysed the current situation and evolution of the RE and EQ in the BTH region. Based on the coupled coordination degree (CCD) model, this paper has developed an evaluative framework and quantifies the spatiotemporal coupled coordination of the RE and EQ in the BTH region from 2000 to 2020. The results show that: (1) in 2020, the GDP of the poverty-stricken counties (PSCs) around BTH accounted for 4.57% of the total BTH region, and the area of high-quality ecosystems, Net Primary Productivity (NPP), soil conservation, water conservation, and sand fixation accounted for more than 40% of the total BTH region; (2) the GDP growth of the PSCs accounted for 4.45% of the total growth in BTH, the reduced area of high-quality ecosystems accounted for 21.04%, and the increase in NPP, soil conservation, water conservation, and sand fixation accounted for more than 40% of the total growth in the BTH region; (3) the CCD of the RE and EQ in the BTH region showed a tendency to increase, but the gap between the regions gradually expanded, and the development type changed from a lagging RE to a lagging EQ, in which the coupled coordination grade of the PSCs was in a dissonance stage for a long time, and the level of economic development had to improve. Deepening the understanding of the spatiotemporal coupling relationship between the RE and EQ and adopting appropriate development policies is of great significance for achieving the coordinated and integrated development of the BTH region.","PeriodicalId":508186,"journal":{"name":"Land","volume":"30 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141806368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luísa Diniz, Gelson Carlos, Carmelita Miranda, P. Dinis, Rosa Marques, Fernando Rocha, E. F. D. Silva, Agostinho A. Almeida, Marina M. S. Cabral-Pinto
Geochemical mapping is the base of knowledge needed to determine the critical contents of potential toxic elements and the potentially hazardous regions on the planet. This work presents maps of baseline values of chemical elements in the soils of Sal Island (Cape Verde) and the assessment of their ecological and human health risks. According to the results, Ba, Co, Ni, and V baseline values are above the international guidelines for agricultural and residential proposed uses. Arsenic in the soil overlying the Ancient Eruptive Complex shows a high potential ecological risk factor. It is not clear if high As contents in soils have a geogenic or anthropogenic source. Hazard indexes (HI) were calculated for children and adults. For children, HI is higher than 1 for Co, Cr, and Mn, indicating potential non-carcinogenic risk. These elements are present in high content in soils covering Quaternary sediments, the Monte Grande-Pedra Lume Formation, and the Ancient Eruptive Complex, inducing belief in a geogenic source. For the other elements and for adults, there is no potential non-carcinogenic risk. Cancer risk (CR) was calculated for As, Cd, Cr, and Ni exposures for adults and children, and the results are mainly lower than the carcinogenic target risk value, indicating no cancer risk. Only in a few soil samples are CR results slightly higher than the carcinogenic target risk of 1 × 10−4 2 × 10−6 for adults exposed to Cr by inhalation. It is important to emphasize that these results of the health risk associated with exposure are likely to overestimate the bioavailable fractions of the elements in the soil once it is used as aqua regia instead of physiological fluids to digest the soil. However, since measured concentrations of potential toxic elements in soil reveal that they can be harmful to both the environment and human health, regional activities such as agriculture or water exploitation must be controlled by competent authorities. These conclusions highlight the insights and the applicability of soil geochemistry surveys for future policy progress, which are particularly relevant in developing countries like the Cape Verde archipelago.
{"title":"Soil Geochemical Mapping of the Sal Island (Cape Verde): Ecological and Human Health Risk Assessment","authors":"Luísa Diniz, Gelson Carlos, Carmelita Miranda, P. Dinis, Rosa Marques, Fernando Rocha, E. F. D. Silva, Agostinho A. Almeida, Marina M. S. Cabral-Pinto","doi":"10.3390/land13081139","DOIUrl":"https://doi.org/10.3390/land13081139","url":null,"abstract":"Geochemical mapping is the base of knowledge needed to determine the critical contents of potential toxic elements and the potentially hazardous regions on the planet. This work presents maps of baseline values of chemical elements in the soils of Sal Island (Cape Verde) and the assessment of their ecological and human health risks. According to the results, Ba, Co, Ni, and V baseline values are above the international guidelines for agricultural and residential proposed uses. Arsenic in the soil overlying the Ancient Eruptive Complex shows a high potential ecological risk factor. It is not clear if high As contents in soils have a geogenic or anthropogenic source. Hazard indexes (HI) were calculated for children and adults. For children, HI is higher than 1 for Co, Cr, and Mn, indicating potential non-carcinogenic risk. These elements are present in high content in soils covering Quaternary sediments, the Monte Grande-Pedra Lume Formation, and the Ancient Eruptive Complex, inducing belief in a geogenic source. For the other elements and for adults, there is no potential non-carcinogenic risk. Cancer risk (CR) was calculated for As, Cd, Cr, and Ni exposures for adults and children, and the results are mainly lower than the carcinogenic target risk value, indicating no cancer risk. Only in a few soil samples are CR results slightly higher than the carcinogenic target risk of 1 × 10−4 2 × 10−6 for adults exposed to Cr by inhalation. It is important to emphasize that these results of the health risk associated with exposure are likely to overestimate the bioavailable fractions of the elements in the soil once it is used as aqua regia instead of physiological fluids to digest the soil. However, since measured concentrations of potential toxic elements in soil reveal that they can be harmful to both the environment and human health, regional activities such as agriculture or water exploitation must be controlled by competent authorities. These conclusions highlight the insights and the applicability of soil geochemistry surveys for future policy progress, which are particularly relevant in developing countries like the Cape Verde archipelago.","PeriodicalId":508186,"journal":{"name":"Land","volume":"71 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141802696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Henry Garzón Sánchez, Juan Carlos Loaiza Usuga, Jaime Ignacio Vélez Upégui
The hydrological response (HR), generally defined as the relationship between rainfall and runoff, should be understood holistically within the processes of the conversion of rainfall to evapotranspiration, surface and subsurface runoff, groundwater flow, and streamflow. The objective of this study was to evaluate the HR of three predominant land use and land cover (LULC) types in the Colombian Andes at the micro-watershed scale. Experimental micro-watersheds were established to replicate LU (pasture, and a coffee agroforestry system) and LC (natural forest). The TETIS model was applied, calibrated, and verified, and the similarity between observed flows (using level sensors and volumetric gauges) and flows simulated by the model was evaluated, relating the HR to each type of LULC. The HR included an analysis of the Water Retention and Regulation Index—IRH and Base Flow Index—IFB. The best model fit and HR were found for the agroforestry system, with a moderate NSE (0.48), R2 (0.7), RMSE (0.2), and BE (20.8%). On the other hand, a forest cover was found to guarantee the permanence of subsurface inputs and base flows to the river, as evidenced by high IRH, IFB, and water balance values. Natural forest land uses present high volumetric moisture content in the soil, corresponding to a high IFB.
{"title":"Hydrological Response to Predominant Land Use and Land Cover in the Colombian Andes at the Micro-Watershed Scale","authors":"Henry Garzón Sánchez, Juan Carlos Loaiza Usuga, Jaime Ignacio Vélez Upégui","doi":"10.3390/land13081140","DOIUrl":"https://doi.org/10.3390/land13081140","url":null,"abstract":"The hydrological response (HR), generally defined as the relationship between rainfall and runoff, should be understood holistically within the processes of the conversion of rainfall to evapotranspiration, surface and subsurface runoff, groundwater flow, and streamflow. The objective of this study was to evaluate the HR of three predominant land use and land cover (LULC) types in the Colombian Andes at the micro-watershed scale. Experimental micro-watersheds were established to replicate LU (pasture, and a coffee agroforestry system) and LC (natural forest). The TETIS model was applied, calibrated, and verified, and the similarity between observed flows (using level sensors and volumetric gauges) and flows simulated by the model was evaluated, relating the HR to each type of LULC. The HR included an analysis of the Water Retention and Regulation Index—IRH and Base Flow Index—IFB. The best model fit and HR were found for the agroforestry system, with a moderate NSE (0.48), R2 (0.7), RMSE (0.2), and BE (20.8%). On the other hand, a forest cover was found to guarantee the permanence of subsurface inputs and base flows to the river, as evidenced by high IRH, IFB, and water balance values. Natural forest land uses present high volumetric moisture content in the soil, corresponding to a high IFB.","PeriodicalId":508186,"journal":{"name":"Land","volume":"46 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141805699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nowadays, some of the most expensive real estate is not “real” at all. Several investors are purchasing land in the virtual world of the Metaverse. To be more accurate in the wording, they are buying “meta-estates”. This work is dedicated to opening a debate about this emerging research field within the real estate discipline. It begins by discussing market segmentation, ownership, and pricing by comparing the traditional real estate market with the virtual estate market. Furthermore, this study involved interviews with six seasoned Metaverse land investors who participated in two Analytic Hierarchy Processes (AHPs). The first AHP ranked 14 investment typologies, while the second focused on ranking and discussing the most important characteristics of meta-estates that influence the formation of prices. As a result, the most appealing investments identified were day-trading, virtual land trading (buying to resell), and virtual land development (transforming and reselling). The primary characteristics of meta-estates considered by investors include the platform (e.g., Earth 2, Sandbox), the location within the platform (proximity to famous neighbours), and the architectural design of the buildings (designed by renowned architects). It is evident that the Metaverse represents a new frontier for land investors, and the primary aim of this study was to encourage other researchers to explore and investigate this evolving field.
{"title":"Market Value or Meta Value? The Value of Virtual Land during the Metaverse’s Digital Era","authors":"A. Ruggeri, G. Marella, Laura Gabrielli","doi":"10.3390/land13081135","DOIUrl":"https://doi.org/10.3390/land13081135","url":null,"abstract":"Nowadays, some of the most expensive real estate is not “real” at all. Several investors are purchasing land in the virtual world of the Metaverse. To be more accurate in the wording, they are buying “meta-estates”. This work is dedicated to opening a debate about this emerging research field within the real estate discipline. It begins by discussing market segmentation, ownership, and pricing by comparing the traditional real estate market with the virtual estate market. Furthermore, this study involved interviews with six seasoned Metaverse land investors who participated in two Analytic Hierarchy Processes (AHPs). The first AHP ranked 14 investment typologies, while the second focused on ranking and discussing the most important characteristics of meta-estates that influence the formation of prices. As a result, the most appealing investments identified were day-trading, virtual land trading (buying to resell), and virtual land development (transforming and reselling). The primary characteristics of meta-estates considered by investors include the platform (e.g., Earth 2, Sandbox), the location within the platform (proximity to famous neighbours), and the architectural design of the buildings (designed by renowned architects). It is evident that the Metaverse represents a new frontier for land investors, and the primary aim of this study was to encourage other researchers to explore and investigate this evolving field.","PeriodicalId":508186,"journal":{"name":"Land","volume":"50 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141805817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Exploring the impact of landscape planning on visual and spatial perception is particularly significant for historical district tourism. The existing literature offers limited insight into which historical landscapes most effectively influence tourists’ visual and spatial perceptions. Our study investigates this relationship within the cultural heritage context of Laomendong, a historical district in Nanjing, China. Utilizing the Stimulus–Organism–Response (SOR) theoretical framework, this research explored how the stylistic, symbolic, and spatial dimensions of historical landscapes influence tourists’ visual and spatial perceptions. Structural equation modeling (SEM) was used to test hypotheses concerning the relationships between historical landscapes, visual perception, spatial perception, and individual predispositions. The findings revealed that stylistic factors (material, color, and ornament), symbolic factors (landmark, relic, and sign), and spatial factors (openness, scale, and layout) significantly enhance visual perception and subsequently spatial perception. Visual perception plays a mediating role in the influence of historical landscapes on spatial perception. Individual predispositions, like sensation-seeking, intensify spatial perception, while destination familiarity surprisingly shows a negative effect, suggesting that over-familiarity might diminish the novelty and excitement of a spatial experience. These insights provide practical implications for the sustainable development of landscape planning in historical district tourism.
{"title":"Research on the Impact of Landscape Planning on Visual and Spatial Perception in Historical District Tourism: A Case Study of Laomendong","authors":"Lingfang Shao, Pengfei Ma, Zijin Zhou","doi":"10.3390/land13081134","DOIUrl":"https://doi.org/10.3390/land13081134","url":null,"abstract":"Exploring the impact of landscape planning on visual and spatial perception is particularly significant for historical district tourism. The existing literature offers limited insight into which historical landscapes most effectively influence tourists’ visual and spatial perceptions. Our study investigates this relationship within the cultural heritage context of Laomendong, a historical district in Nanjing, China. Utilizing the Stimulus–Organism–Response (SOR) theoretical framework, this research explored how the stylistic, symbolic, and spatial dimensions of historical landscapes influence tourists’ visual and spatial perceptions. Structural equation modeling (SEM) was used to test hypotheses concerning the relationships between historical landscapes, visual perception, spatial perception, and individual predispositions. The findings revealed that stylistic factors (material, color, and ornament), symbolic factors (landmark, relic, and sign), and spatial factors (openness, scale, and layout) significantly enhance visual perception and subsequently spatial perception. Visual perception plays a mediating role in the influence of historical landscapes on spatial perception. Individual predispositions, like sensation-seeking, intensify spatial perception, while destination familiarity surprisingly shows a negative effect, suggesting that over-familiarity might diminish the novelty and excitement of a spatial experience. These insights provide practical implications for the sustainable development of landscape planning in historical district tourism.","PeriodicalId":508186,"journal":{"name":"Land","volume":"52 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141804903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As an important incentive and constraint system to coordinate the contradiction between ecological resource protection and regional economic development, the ecological and environmental protection effect after its implementation deserves special attention, especially for China, which involves the widest scope of payment and the largest transfer and has become the largest governmental ecological compensation program in China and even in the world. Starting from the evolution of China’s eco-financial transfer system, this study conducts an empirical investigation of the ecological and environmental protection effect of the eco-financial transfer system. Such an undertaking is based on the theoretical exploration of the impact mechanism of the eco-financial transfer system to improve the ecological environment quality and based on the panel data of 40 counties in Hubei Province from 2010 to 2020. Results of the study show that the ecological financial transfer system can promote the improvement of regional ecological environment quality, but the promotion effect is insignificant. The financial funds reflect more of a financial compensation effect than a system incentive effect. The increase in the scale of ecological transfer payments is conducive to strengthening the incentive function of the system, promoting local governments to increase environmental protection expenditures and environmental regulation efforts to improve the quality of the ecological environment. Therefore, in the process of implementing ecological financial transfers from the province to the counties, the concept of ecological value contribution should be incorporated into the fund allocation process. In addition, the current ecological transfer payment fund allocation method should be reconstructed on the basis of the ecological value contribution to enhance the guiding role of “high quality and high price, more work and more gain.” The goal is to effectively stimulate the enthusiasm of local governments for ecological environmental protection. Findings have significant guidance for developing countries that are currently seeking to formulate and implement such policies.
{"title":"Can China’s Cross-Regional Ecological Fiscal Transfers Help Improve the Ecological Environment?—Evidence from Hubei Province","authors":"Mengba Liu, Yanfei Xiong, Anlu Zhang","doi":"10.3390/land13081132","DOIUrl":"https://doi.org/10.3390/land13081132","url":null,"abstract":"As an important incentive and constraint system to coordinate the contradiction between ecological resource protection and regional economic development, the ecological and environmental protection effect after its implementation deserves special attention, especially for China, which involves the widest scope of payment and the largest transfer and has become the largest governmental ecological compensation program in China and even in the world. Starting from the evolution of China’s eco-financial transfer system, this study conducts an empirical investigation of the ecological and environmental protection effect of the eco-financial transfer system. Such an undertaking is based on the theoretical exploration of the impact mechanism of the eco-financial transfer system to improve the ecological environment quality and based on the panel data of 40 counties in Hubei Province from 2010 to 2020. Results of the study show that the ecological financial transfer system can promote the improvement of regional ecological environment quality, but the promotion effect is insignificant. The financial funds reflect more of a financial compensation effect than a system incentive effect. The increase in the scale of ecological transfer payments is conducive to strengthening the incentive function of the system, promoting local governments to increase environmental protection expenditures and environmental regulation efforts to improve the quality of the ecological environment. Therefore, in the process of implementing ecological financial transfers from the province to the counties, the concept of ecological value contribution should be incorporated into the fund allocation process. In addition, the current ecological transfer payment fund allocation method should be reconstructed on the basis of the ecological value contribution to enhance the guiding role of “high quality and high price, more work and more gain.” The goal is to effectively stimulate the enthusiasm of local governments for ecological environmental protection. Findings have significant guidance for developing countries that are currently seeking to formulate and implement such policies.","PeriodicalId":508186,"journal":{"name":"Land","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141804573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexey Desyatkin, M. Okoneshnikova, Pavel Fedorov, Alexandra Ivanova, Nikolay Filippov, R. Desyatkin
This paper presents the results of studying changes in the main parameters and properties of soils in larch and pine forests growing on sandy soils of the Lena-Vilyui interfluve of Central Yakutia, where catastrophic forest fires occurred in 2021. According to the remote monitoring information system of Rosleskhoz, in 2021, almost 8.5 million hectares of forests burned in Yakutia, which is considered as one of the largest forest fires in Russia and in the world in that year. After the fire passes through the forest floor, the content of organic matter decreases as a result of combustion processes. The acidity of the soil changes towards its alkalization due to the entry of combustion products. Changes in soil profiles occur; turbation processes begin more intensively, which in turn change the natural distribution of soil indicator values such as the organic carbon content, the pH, and the number of exchangeable bases. Due to the sharp increase in heat supply after a fire, the depth of seasonal thawing in the soils of burnt larch forests increases by a quarter and by twofold in pine forests. With the beginning of the thawing of the seasonally frozen layer, all the soils experience waterlogging, and ground water occurs above the permafrost.
{"title":"The Impact of Catastrophic Forest Fires of 2021 on the Light Soils in Central Yakutia","authors":"Alexey Desyatkin, M. Okoneshnikova, Pavel Fedorov, Alexandra Ivanova, Nikolay Filippov, R. Desyatkin","doi":"10.3390/land13081130","DOIUrl":"https://doi.org/10.3390/land13081130","url":null,"abstract":"This paper presents the results of studying changes in the main parameters and properties of soils in larch and pine forests growing on sandy soils of the Lena-Vilyui interfluve of Central Yakutia, where catastrophic forest fires occurred in 2021. According to the remote monitoring information system of Rosleskhoz, in 2021, almost 8.5 million hectares of forests burned in Yakutia, which is considered as one of the largest forest fires in Russia and in the world in that year. After the fire passes through the forest floor, the content of organic matter decreases as a result of combustion processes. The acidity of the soil changes towards its alkalization due to the entry of combustion products. Changes in soil profiles occur; turbation processes begin more intensively, which in turn change the natural distribution of soil indicator values such as the organic carbon content, the pH, and the number of exchangeable bases. Due to the sharp increase in heat supply after a fire, the depth of seasonal thawing in the soils of burnt larch forests increases by a quarter and by twofold in pine forests. With the beginning of the thawing of the seasonally frozen layer, all the soils experience waterlogging, and ground water occurs above the permafrost.","PeriodicalId":508186,"journal":{"name":"Land","volume":"94 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141808119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Building height is a crucial indicator when studying urban environments and human activities, necessitating accurate, large-scale, and fine-resolution calculations. However, mainstream machine learning-based methods for inferring building heights face numerous challenges, including limited sample data and slow update frequencies. Alternatively, satellite laser altimetry technology offers a reliable means of calculating building heights with high precision. Here, we initially calculated building heights along satellite orbits based on building-rooftop contour vector datasets and ICESat-2 ATL03 photon data from 2019 to 2022. By integrating multi-source passive remote sensing observation data, we used the inferred building height results as reference data to train a random forest model, regressing building heights at a 10 m scale. Compared with ground-measured heights, building height samples constructed from ICESat-2 photon data outperformed methods that indirectly infer building heights using total building floor number. Moreover, the simulated building heights strongly correlated with actual observations at a single-city scale. Finally, using several years of inferred results, we analyzed building height changes in Tianjin from 2019 to 2022. Combined with the random forest model, the proposed model enables large-scale, high-precision inference of building heights with frequent updates, which has significant implications for global dynamic observation of urban three-dimensional features.
{"title":"Dynamic Inversion Method of Calculating Large-Scale Urban Building Height Based on Cooperative Satellite Laser Altimetry and Multi-Source Optical Remote Sensing","authors":"Haobin Xia, Jianjun Wu, Jiaqi Yao, Nan Xu, Xiaoming Gao, Yubin Liang, Jianhua Yang, Jianhang Zhang, Liang Gao, Weiqi Jin, Bowen Ni","doi":"10.3390/land13081120","DOIUrl":"https://doi.org/10.3390/land13081120","url":null,"abstract":"Building height is a crucial indicator when studying urban environments and human activities, necessitating accurate, large-scale, and fine-resolution calculations. However, mainstream machine learning-based methods for inferring building heights face numerous challenges, including limited sample data and slow update frequencies. Alternatively, satellite laser altimetry technology offers a reliable means of calculating building heights with high precision. Here, we initially calculated building heights along satellite orbits based on building-rooftop contour vector datasets and ICESat-2 ATL03 photon data from 2019 to 2022. By integrating multi-source passive remote sensing observation data, we used the inferred building height results as reference data to train a random forest model, regressing building heights at a 10 m scale. Compared with ground-measured heights, building height samples constructed from ICESat-2 photon data outperformed methods that indirectly infer building heights using total building floor number. Moreover, the simulated building heights strongly correlated with actual observations at a single-city scale. Finally, using several years of inferred results, we analyzed building height changes in Tianjin from 2019 to 2022. Combined with the random forest model, the proposed model enables large-scale, high-precision inference of building heights with frequent updates, which has significant implications for global dynamic observation of urban three-dimensional features.","PeriodicalId":508186,"journal":{"name":"Land","volume":"44 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141808453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Many debris-covered glaciers are widely distributed on the Qinghai–Tibet Plateau. Glaciers are important freshwater resources and cause disasters such as glacier collapse and landslides. Therefore, it is of great significance to monitor the movement characteristics of large active glaciers and analyze the process of mass migration, which may cause serious threats and damage to roads and people living in surrounding areas. In this study, we chose a glacier with strong activity in Lulang County, Tibet, as the study area. The complete 4-year time series deformation of the glacier was estimated by using an improved small-baseline subset InSAR (SBAS-InSAR) technique based on the ascending and descending Sentinel-1 datasets. Then, the three-dimensional time series deformation field of the glacier was obtained by using the 3D decomposition technique. Furthermore, the three-dimensional movement of the glacier and its material migration process were analyzed. The results showed that the velocities of the Lulang glacier in horizontal and vertical directions were up to 8.0 m/year and 0.45 m/year, and these were basically consistent with the movement rate calculated from the historical optical images. Debris on both sides of the slope accumulated in the channel after slipping, and the material loss of the three provenances reached 6–9 × 103 m3/year, while the volume of the glacier also decreased by about 76 × 103 m3/year due to snow melting and evaporation. The correlation between the precipitation, temperature, and surface velocity suggests that glacier velocity has a clear association with them, and the activity of glaciers is linked to climate change. Therefore, in the context of global warming, the glacier movement speed will gradually increase with the annual increase in temperature, resulting in debris flow disasters in the future summer high-temperature period.
{"title":"The Improved SBAS-InSAR Technique Reveals Three-Dimensional Glacier Collapse: A Case Study in the Qinghai–Tibet Plateau","authors":"Xinyao Wang, Jiayi Yao, Yanbo Cao, Jiaming Yao","doi":"10.3390/land13081126","DOIUrl":"https://doi.org/10.3390/land13081126","url":null,"abstract":"Many debris-covered glaciers are widely distributed on the Qinghai–Tibet Plateau. Glaciers are important freshwater resources and cause disasters such as glacier collapse and landslides. Therefore, it is of great significance to monitor the movement characteristics of large active glaciers and analyze the process of mass migration, which may cause serious threats and damage to roads and people living in surrounding areas. In this study, we chose a glacier with strong activity in Lulang County, Tibet, as the study area. The complete 4-year time series deformation of the glacier was estimated by using an improved small-baseline subset InSAR (SBAS-InSAR) technique based on the ascending and descending Sentinel-1 datasets. Then, the three-dimensional time series deformation field of the glacier was obtained by using the 3D decomposition technique. Furthermore, the three-dimensional movement of the glacier and its material migration process were analyzed. The results showed that the velocities of the Lulang glacier in horizontal and vertical directions were up to 8.0 m/year and 0.45 m/year, and these were basically consistent with the movement rate calculated from the historical optical images. Debris on both sides of the slope accumulated in the channel after slipping, and the material loss of the three provenances reached 6–9 × 103 m3/year, while the volume of the glacier also decreased by about 76 × 103 m3/year due to snow melting and evaporation. The correlation between the precipitation, temperature, and surface velocity suggests that glacier velocity has a clear association with them, and the activity of glaciers is linked to climate change. Therefore, in the context of global warming, the glacier movement speed will gradually increase with the annual increase in temperature, resulting in debris flow disasters in the future summer high-temperature period.","PeriodicalId":508186,"journal":{"name":"Land","volume":"82 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141807837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：