Soil plays a critical role in providing various Ecosystem Services (ESs) that are beneficial to humanity. Services such as clean air, water, and food production are directly or indirectly provided through soils. The s...Soil plays a critical role in providing various Ecosystem Services (ESs) that are beneficial to humanity. Services such as clean air, water, and food production are directly or indirectly provided through soils. The soil ecosystem is considered as the most important Carbon (C) sink in terrestrial systems, and human activities, particularly land use, impact ESs and increase carbon emissions into the atmosphere. Mapping ESs and assessing the risks associated with climate-related hydro-meteorological hazards and soil degradation can contribute to making spatial decisions for planning more climate-resilient. Indeed, strategies based on soil ecosystem services provide valuable insight for enhancing the resilience of spatial decision-making in adapting to climate change. The aim of this article is to illuminate the significance of SoES in the spatial planning decision-making for better integration and adaptation into climate change adaptation policies as a decision support tool. In this regard, ESs related to climate change were highlighted and mapped, and their suitability for settlement development decisions and relation with ESs’ integrity were assessed through weighted multi-criteria analysis, while discussing the contributions of this process to climate change adaptation. Incorporating Social-Ecological Systems (SoESs) factors into suitability analysis is crucial for comprehensive urban planning, particularly in the context of climate change adaptation and environmental protection. In this study, two settlement suitability analyses were conducted. The first analysis considered various factors, such as land use, soil classification, DEM (Digital Elevation Model), and slope. The second analysis utilized weighted climate-related SoES indicators, including soil depth, soil carbon sequestration capacity, soil loss, flood risk, temperature, and precipitation. The results revealed that the SoES-based suitability analysis was more stringent in identifying suitable areas for urban development and offered a more holistic 展开更多
With rapid environmental degeneration and socio-economie development,the human settlement environment (HSE)has experienced dramatic changes and attracted attention from different communities.Consequently,the spatial-t...With rapid environmental degeneration and socio-economie development,the human settlement environment (HSE)has experienced dramatic changes and attracted attention from different communities.Consequently,the spatial-temporal evaluation of natural suitability of the human settlement environment (NSHSE)has become essential for understanding the patterns and dynamics of HSE,and for coordinating sustainable development among regional populations,resources,and environments.This study aims to explore the spatialtemporal evolution of NSHSE patterns in 1997,2005,and 2009 in Fengjie County near the Three Gorges Reservoir Area (TGRA).A spatially weighted NSHSE model was established by integrating multi-source data (e.g.,census data,meteorological data,remote sensing images,DEM data,and GIS data)into one framework,where the Ordinary Least Squares (OLS)linear regression model was applied to calculate the weights of indices in the NSHSE model.Results show that the trend of natural suitability has been first downward and then upward, which is evidenced by the disparity of NSHSE existing in the south,north,and central areas of Fengjie County. Results also reveal clustered NSHSE patterns for all 30 townships.Meanwhile,NSHSE has significant influence on population distribution,and 71.49% of the total population is living in moderate and high suitable districts.展开更多
明确水鸟生境分布和变化,对于维持湿地水鸟物种多样性,改善生态环境质量具有重要意义。白洋淀丰富多样的生境条件为水鸟觅食栖息提供了良好条件。2017年以来,白洋淀生态补水工作取得显著成效,水质由劣V类提升到全面Ⅲ类,水位稳定保持在...明确水鸟生境分布和变化,对于维持湿地水鸟物种多样性,改善生态环境质量具有重要意义。白洋淀丰富多样的生境条件为水鸟觅食栖息提供了良好条件。2017年以来,白洋淀生态补水工作取得显著成效,水质由劣V类提升到全面Ⅲ类,水位稳定保持在7 m左右,淀区面积由171 km 2恢复至275 km 2左右,水域面积不断扩大,水鸟多样性和数量持续增加。但白洋淀地形复杂,生境影响因素众多,不同补水条件下水鸟生境的空间异质性特征还缺乏定量研究。结合遥感和地理信息系统技术,建立生境适宜性指数(HSI)评价模型,量化分析了不同补水条件下白洋淀4—8月鹭类生境的时空变化。结果表明:白洋淀水位和鹭类适宜生境面积密切相关。4月份,鹭类中、高适宜生境面积随水位呈单峰型变化,在水位为7.21 m时达到最大,约为79.76 km 2;5—8月份,鹭类中、高适宜生境面积随水位降低而增大,当水位低于6.33 m时随水位降低而逐渐减少。补水入淀位置是影响鹭类适宜生境时空格局的主要原因。单一入淀口补水,如由小白河、白沟引河分别补水,对淀区北部烧车淀生境适宜性改善效果显著,由府河补水对西部藻苲淀生境适宜性提升明显;4月初水位越低则4—5月份中高适宜生境面积越大。多个入淀口补水,由瀑河、府河和白沟引河相机补水,对整个淀区生境适宜性的改善效果最为显著;4月初高水位比低水位更利于4—8月鹭类栖息。研究成果对于白洋淀夏候鸟种群监测和保护具有一定科学意义。展开更多
物种分布模型(Species Distribution Models,SDMs)常被用于评价物种在不同地域的适生概率,但能否用于指导远距离引种栽培仍需试验证明。该研究以黄花风铃木和红花风铃木这两种外来树种为研究对象,对比理论预测结果与实际栽培分布的差异...物种分布模型(Species Distribution Models,SDMs)常被用于评价物种在不同地域的适生概率,但能否用于指导远距离引种栽培仍需试验证明。该研究以黄花风铃木和红花风铃木这两种外来树种为研究对象,对比理论预测结果与实际栽培分布的差异。结果显示:黄花风铃木和红花风铃木的理论适生阈值分别为0.433和0.469,均明显高于栽培样点的最低适生概率。其中,黄花风铃木的预测适生区面积约为7.96×10^(4) km^(2),仅包含4.19%的实际栽培样点,是实际可栽培面积的6.48%。红花风铃木的预测适生区面积约为28.91×10^(4)km^(2),包含71.79%的实际栽培样点,是实际可栽培面积的62.62%。回归分析结果显示土壤pH值、最冷月均温、土壤有机物碳含量对黄花风铃木在中国的适生概率有明显的正影响,而最冷月均温对红花风铃木的适生概率有明显的负影响。该研究证明了物种分布模型在指导远距离引种栽培时可能存在较大误差,并揭示了影响风铃木预测准确度和适应性分布的可能原因。该研究将为物种分布模型的应用优化以及风铃木的栽培选育提供参考。展开更多
Suitability evaluation of urban geological environment is an important basic work in city planning and construction. With Zhengzhou-Kaifeng area as the research area, this paper discusses AHP and fuzzy comprehensive e...Suitability evaluation of urban geological environment is an important basic work in city planning and construction. With Zhengzhou-Kaifeng area as the research area, this paper discusses AHP and fuzzy comprehensive evaluation methods to classify impact factors at different levels, makes a mixing evaluation of the basic factors and comprehensive factors so as to correct the uncertainty of the weight of the basic factors in the initial evaluation and establish the corresponding evaluation index system, and carries out urban geological environment suitability evaluation in study area. Furthermore, this paper partitions the suitability of the research area according to evaluation results into five zones. It puts forward opinions and suggestions for the construction of research area, which have certain practical significances.展开更多
文摘Soil plays a critical role in providing various Ecosystem Services (ESs) that are beneficial to humanity. Services such as clean air, water, and food production are directly or indirectly provided through soils. The soil ecosystem is considered as the most important Carbon (C) sink in terrestrial systems, and human activities, particularly land use, impact ESs and increase carbon emissions into the atmosphere. Mapping ESs and assessing the risks associated with climate-related hydro-meteorological hazards and soil degradation can contribute to making spatial decisions for planning more climate-resilient. Indeed, strategies based on soil ecosystem services provide valuable insight for enhancing the resilience of spatial decision-making in adapting to climate change. The aim of this article is to illuminate the significance of SoES in the spatial planning decision-making for better integration and adaptation into climate change adaptation policies as a decision support tool. In this regard, ESs related to climate change were highlighted and mapped, and their suitability for settlement development decisions and relation with ESs’ integrity were assessed through weighted multi-criteria analysis, while discussing the contributions of this process to climate change adaptation. Incorporating Social-Ecological Systems (SoESs) factors into suitability analysis is crucial for comprehensive urban planning, particularly in the context of climate change adaptation and environmental protection. In this study, two settlement suitability analyses were conducted. The first analysis considered various factors, such as land use, soil classification, DEM (Digital Elevation Model), and slope. The second analysis utilized weighted climate-related SoES indicators, including soil depth, soil carbon sequestration capacity, soil loss, flood risk, temperature, and precipitation. The results revealed that the SoES-based suitability analysis was more stringent in identifying suitable areas for urban development and offered a more holistic
文摘With rapid environmental degeneration and socio-economie development,the human settlement environment (HSE)has experienced dramatic changes and attracted attention from different communities.Consequently,the spatial-temporal evaluation of natural suitability of the human settlement environment (NSHSE)has become essential for understanding the patterns and dynamics of HSE,and for coordinating sustainable development among regional populations,resources,and environments.This study aims to explore the spatialtemporal evolution of NSHSE patterns in 1997,2005,and 2009 in Fengjie County near the Three Gorges Reservoir Area (TGRA).A spatially weighted NSHSE model was established by integrating multi-source data (e.g.,census data,meteorological data,remote sensing images,DEM data,and GIS data)into one framework,where the Ordinary Least Squares (OLS)linear regression model was applied to calculate the weights of indices in the NSHSE model.Results show that the trend of natural suitability has been first downward and then upward, which is evidenced by the disparity of NSHSE existing in the south,north,and central areas of Fengjie County. Results also reveal clustered NSHSE patterns for all 30 townships.Meanwhile,NSHSE has significant influence on population distribution,and 71.49% of the total population is living in moderate and high suitable districts.
文摘明确水鸟生境分布和变化,对于维持湿地水鸟物种多样性,改善生态环境质量具有重要意义。白洋淀丰富多样的生境条件为水鸟觅食栖息提供了良好条件。2017年以来,白洋淀生态补水工作取得显著成效,水质由劣V类提升到全面Ⅲ类,水位稳定保持在7 m左右,淀区面积由171 km 2恢复至275 km 2左右,水域面积不断扩大,水鸟多样性和数量持续增加。但白洋淀地形复杂,生境影响因素众多,不同补水条件下水鸟生境的空间异质性特征还缺乏定量研究。结合遥感和地理信息系统技术,建立生境适宜性指数(HSI)评价模型,量化分析了不同补水条件下白洋淀4—8月鹭类生境的时空变化。结果表明:白洋淀水位和鹭类适宜生境面积密切相关。4月份,鹭类中、高适宜生境面积随水位呈单峰型变化,在水位为7.21 m时达到最大,约为79.76 km 2;5—8月份,鹭类中、高适宜生境面积随水位降低而增大,当水位低于6.33 m时随水位降低而逐渐减少。补水入淀位置是影响鹭类适宜生境时空格局的主要原因。单一入淀口补水,如由小白河、白沟引河分别补水,对淀区北部烧车淀生境适宜性改善效果显著,由府河补水对西部藻苲淀生境适宜性提升明显;4月初水位越低则4—5月份中高适宜生境面积越大。多个入淀口补水,由瀑河、府河和白沟引河相机补水,对整个淀区生境适宜性的改善效果最为显著;4月初高水位比低水位更利于4—8月鹭类栖息。研究成果对于白洋淀夏候鸟种群监测和保护具有一定科学意义。
文摘物种分布模型(Species Distribution Models,SDMs)常被用于评价物种在不同地域的适生概率,但能否用于指导远距离引种栽培仍需试验证明。该研究以黄花风铃木和红花风铃木这两种外来树种为研究对象,对比理论预测结果与实际栽培分布的差异。结果显示:黄花风铃木和红花风铃木的理论适生阈值分别为0.433和0.469,均明显高于栽培样点的最低适生概率。其中,黄花风铃木的预测适生区面积约为7.96×10^(4) km^(2),仅包含4.19%的实际栽培样点,是实际可栽培面积的6.48%。红花风铃木的预测适生区面积约为28.91×10^(4)km^(2),包含71.79%的实际栽培样点,是实际可栽培面积的62.62%。回归分析结果显示土壤pH值、最冷月均温、土壤有机物碳含量对黄花风铃木在中国的适生概率有明显的正影响,而最冷月均温对红花风铃木的适生概率有明显的负影响。该研究证明了物种分布模型在指导远距离引种栽培时可能存在较大误差,并揭示了影响风铃木预测准确度和适应性分布的可能原因。该研究将为物种分布模型的应用优化以及风铃木的栽培选育提供参考。
基金supported by China Geological Survey Project“Urban Geological Survey of Central Plains Urban Agglomeration”(1212011089048)
文摘Suitability evaluation of urban geological environment is an important basic work in city planning and construction. With Zhengzhou-Kaifeng area as the research area, this paper discusses AHP and fuzzy comprehensive evaluation methods to classify impact factors at different levels, makes a mixing evaluation of the basic factors and comprehensive factors so as to correct the uncertainty of the weight of the basic factors in the initial evaluation and establish the corresponding evaluation index system, and carries out urban geological environment suitability evaluation in study area. Furthermore, this paper partitions the suitability of the research area according to evaluation results into five zones. It puts forward opinions and suggestions for the construction of research area, which have certain practical significances.
