As a basic natural resource and strategic economic resource,the development and utilization of water resources is an important issue related to the national economy and people's livelihood.How to scientifically ev...As a basic natural resource and strategic economic resource,the development and utilization of water resources is an important issue related to the national economy and people's livelihood.How to scientifically evaluate the water resources carrying capacity is the premise to improve the regional water resources carrying capacity and ensure the regional water security.The Gansu section of the Yellow River basin is an important water conservation and recharge area.Whether the water resources in this area can ensure the normal operation of the ecosystem and whether it can carry the sustainable development of social economy is the key to realize the high-quality development of the Yellow River basin.In this study,from the three dimensions of water consumption per capita,water consumption of 10000 yuan GDP and ecological water use rate,by constructing the evaluation index system and index grading standard of water resources carrying capacity,the fuzzy comprehensive evaluation model was used to evaluate the water resources carrying capacity of Gansu section of the Yellow River Basin,in order to provide theoretical decision-making basis for the comprehensive development,utilization and planning management of water resources in Gansu section of the Yellow River basin and even the whole basin,and help the high-quality development of the Yellow River basin.展开更多
黄河流域山西段是重要的生态屏障区,明晰生态系统服务权衡/协同强度的时空格局,对生态保护及经济协调发展具有重要意义。本文基于生态系统服务和权衡的综合评估模型(Integrated Valuation of Ecosystem Services and Tradeoffs,InVEST)...黄河流域山西段是重要的生态屏障区,明晰生态系统服务权衡/协同强度的时空格局,对生态保护及经济协调发展具有重要意义。本文基于生态系统服务和权衡的综合评估模型(Integrated Valuation of Ecosystem Services and Tradeoffs,InVEST)量化生态系统服务供给量和需求量,通过均方根偏差(Root Mean Square Deviation,RMSD)量化生态系统服务权衡强度,利用结构方程模型(Structural Equation Model,SEM)分析权衡强度的驱动因素。结果表明:(1)2000—2020年产水(Water Yield,WY)和土壤保持服务(Soil Conservation,SC)、产水和固碳服务(Carbon Sequestration,CS)供给权衡强度呈上升趋势,产水和土壤保持服务、产水和固碳服务需求协同强度呈下降趋势。(2)除产水服务在2020年供给—需求权衡强度大于0,2000—2020年产水、土壤保持和固碳服务的供给—需求权衡强度均小于0。(3)生态系统服务权衡/协同强度主要受自然因素影响,蒸散发对产水和土壤保持服务、产水和固碳服务供给权衡具有促进作用,对产水服务供给—需求权衡具有抑制作用;草地面积占比对产水和固碳服务供给权衡及产水和土壤保持服务需求协同具有抑制作用,对固碳服务供给—需求权衡具有促进作用;降水对产水和固碳服务需求协同及土壤保持服务供给—需求权衡具有抑制作用,对产水服务供给—需求权衡具有促进作用。(4)社会经济因素对生态系统服务权衡/协同强度具有次要作用,人口密度对产水和土壤保持服务需求协同具有促进作用,而对产水服务供给—需求权衡及固碳服务供给—需求权衡具有抑制作用。因此,在制定流域综合管理决策时应考虑生态系统服务权衡/协同强度的空间特征和驱动因素的差异性。展开更多
基金Supported by Gansu Province 2023 Education Science and Technology Innovation Project(2023B-431).
文摘As a basic natural resource and strategic economic resource,the development and utilization of water resources is an important issue related to the national economy and people's livelihood.How to scientifically evaluate the water resources carrying capacity is the premise to improve the regional water resources carrying capacity and ensure the regional water security.The Gansu section of the Yellow River basin is an important water conservation and recharge area.Whether the water resources in this area can ensure the normal operation of the ecosystem and whether it can carry the sustainable development of social economy is the key to realize the high-quality development of the Yellow River basin.In this study,from the three dimensions of water consumption per capita,water consumption of 10000 yuan GDP and ecological water use rate,by constructing the evaluation index system and index grading standard of water resources carrying capacity,the fuzzy comprehensive evaluation model was used to evaluate the water resources carrying capacity of Gansu section of the Yellow River Basin,in order to provide theoretical decision-making basis for the comprehensive development,utilization and planning management of water resources in Gansu section of the Yellow River basin and even the whole basin,and help the high-quality development of the Yellow River basin.
文摘黄河流域山西段是重要的生态屏障区,明晰生态系统服务权衡/协同强度的时空格局,对生态保护及经济协调发展具有重要意义。本文基于生态系统服务和权衡的综合评估模型(Integrated Valuation of Ecosystem Services and Tradeoffs,InVEST)量化生态系统服务供给量和需求量,通过均方根偏差(Root Mean Square Deviation,RMSD)量化生态系统服务权衡强度,利用结构方程模型(Structural Equation Model,SEM)分析权衡强度的驱动因素。结果表明:(1)2000—2020年产水(Water Yield,WY)和土壤保持服务(Soil Conservation,SC)、产水和固碳服务(Carbon Sequestration,CS)供给权衡强度呈上升趋势,产水和土壤保持服务、产水和固碳服务需求协同强度呈下降趋势。(2)除产水服务在2020年供给—需求权衡强度大于0,2000—2020年产水、土壤保持和固碳服务的供给—需求权衡强度均小于0。(3)生态系统服务权衡/协同强度主要受自然因素影响,蒸散发对产水和土壤保持服务、产水和固碳服务供给权衡具有促进作用,对产水服务供给—需求权衡具有抑制作用;草地面积占比对产水和固碳服务供给权衡及产水和土壤保持服务需求协同具有抑制作用,对固碳服务供给—需求权衡具有促进作用;降水对产水和固碳服务需求协同及土壤保持服务供给—需求权衡具有抑制作用,对产水服务供给—需求权衡具有促进作用。(4)社会经济因素对生态系统服务权衡/协同强度具有次要作用,人口密度对产水和土壤保持服务需求协同具有促进作用,而对产水服务供给—需求权衡及固碳服务供给—需求权衡具有抑制作用。因此,在制定流域综合管理决策时应考虑生态系统服务权衡/协同强度的空间特征和驱动因素的差异性。
