水土保持研究2025，Vol.32Issue(3)：291-299,9.DOI:10.13869/j.cnki.rswc.2025.03.033
土地利用强度与景观生态风险的时空演变及其耦合协调特征
Spatiotemporal evolution of land use intensity and landscape ecological risk and their coupling coordination characteristics
摘要
Abstract
[Objective]Land use intensity is a critical factor affecting landscape ecological risk.Clarifying the complex nonlinear relationship between the two can provide a scientific basis for the sustainable utilization of land resources and regional ecological security.[Method]Taking the Shaanxi section of the Yellow River Basin as a case study,this research analyzed the spatiotemporal differentiation characteristics of land use intensity and landscape ecological risk.Additionally,a coupling coordination degree model was applied to explore the coupling coordination characteristics between the two.[Results](1)From 2000 to 2020,land use intensity in the Shaanxi section of the Yellow River Basin showed an overall increasing trend,with an average annual growth rate of 4.55%.Spatially,the intensity increased from north to south.(2)The overall landscape ecological risk was at a medium level.The ecological risk index decreased slightly from 0.19 in 2000 to 0.17 in 2020,showing a declining trend from north to south.On average,85.5%of the high ecological risk areas were distributed in the eolian sandy region along the Great Wall in the north and the Weibei loess plateau region.(3)The coupling coordination degree between land use intensity and landscape ecological risk increased annually from 0.40 in 2000 to 0.46 in 2020,showing an annual upward trend and increasing spatially from north to south.When land use intensity exceeded 0.13,the relationship between the two shifted from low coupling coordination,characterized by mutual suppression,to high coupling coordination,characterized by mutual promotion.[Conclusion]The land use intensity,landscape ecological risk,and their coupling coordination degree in the Shaanxi section of the Yellow River Basin exhibit significant spatiotemporal heterogeneity.Moreover,the coupling coordination degree increases as land use intensity rises.关键词
土地利用强度/景观生态风险/时空演变/耦合协调/黄河流域陕西段Key words
land use intensity/landscape ecological risk/spatiotemporal variation/coupling coordination/Shaanxi section of the Yellow River Basin分类
管理科学引用本文复制引用
付梦雨,邱孟龙,符绍武,李逍遥..土地利用强度与景观生态风险的时空演变及其耦合协调特征[J].水土保持研究,2025,32(3):291-299,9.基金项目
国家自然科学基金项目(42471307,41901262) （42471307,41901262）
陕西省自然科学基础研究计划资助项目(2024JC-YBQN-0300) （2024JC-YBQN-0300）
陕西省社科基金项目(2024R040) （2024R040）
中央高校基本科研业务费专项资金项目(24ZYYB017) （24ZYYB017）
