水土保持研究2025，Vol.32Issue(3)：282-290,9.DOI:10.13869/j.cnki.rswc.2025.03.013
赤水河流域(贵州段)景观生态风险时空分异及空间自相关分析
Spatiotemporal differentiation and spatial autocorrelation analysis of landscape ecological risk in the Chishui River Basin(Guizhou section)
摘要
Abstract
[Objective]This research aims to explore the spatiotemporal evolution of landscape ecological risk in the Chishui River Basin and clarify the spatial autocorrelation characteristics,providing theoretical references to improve the risk prevention and control capacity of the basin and promote regional sustainable development.[Methods]The spatiotemporal evolution characteristics of landscape ecological risk in the Chishui River Basin(Guizhou section)over the past 20 years were analyzed by constructing a landscape ecological risk assessment model,calculating landscape pattern index,and analyzing spatial autocorrelation characteristics of landscape ecological risk from both global and local aspects.[Results](1)Forest,farmland,and grassland were the main landscape types in the study area,and the sum of the three accounted for more than 95%.(2)From 2000 to 2020,the proportion of medium-risk areas remained above 50%,the area of high-risk and medium-high risk decreased by 375.88 km2,and the area of medium-low risk increased by 413.96 km2.The change in landscape ecological risk level decreased overall.(3)The'high-high'cluster was mainly distributed along the Chishui River Basin,with a west-to-east shift in Xishui County and a south-to-north shift in Renhuai City.The'low-low'cluster was mainly distributed in the northeastern part of the basin.[Conclusion]The risk level of the Chishui River Basin(Guizhou section)shows an overall downward trend.Monitoring of medium-risk areas should be strengthened to prevent the transition from medium risk to high risk.Efforts should be made to enhance ecological protection in the Chishui River Basin and alleviate the tension between economic development and ecological protection.关键词
景观生态风险/景观格局指数/空间自相关/时空演变/赤水河流域Key words
landscape ecological risk/landscape pattern index/spatial autocorrelation/spatiotemporal evolution/Chishui River Basin分类
天文与地球科学引用本文复制引用
罗芹芹,刘凤莲,朱柯权,杨磊,赵舒..赤水河流域(贵州段)景观生态风险时空分异及空间自相关分析[J].水土保持研究,2025,32(3):282-290,9.基金项目
国家乡村振兴局委托项目(80026091881) （80026091881）
云南省教育厅科学研究资助项目(2024J0634) （2024J0634）
云南财经大学引进人才项目(2022D13) （2022D13）
云南省服务计算重点实验室开放课题(YNSC24305) （YNSC24305）
