西南林业大学学报2024，Vol.44Issue(9)：63-73,11.DOI:10.11929/j.swfu.202308029
滇中高原湖泊流域景观生态风险时空演变研究
Spatial and Temporal Evolution of Landscape Ecological Risk in Lake Basins of Central Yunnan Plateau
摘要
Abstract
Taking the lake basins of Central Yunnan Plateau as the research object,we analyzed the change characteristics of landscape elements from 2000 to 2020 based on which we analyzed the landscape pattern index,and the spatial and temporal distribution characteristics of landscape ecological risk by constructing a landscape ecological risk evaluation model and a spatial autocorrelation model.The results show that:From 2000 to 2020,cultivated land and forest land were always the substrate landscapes of lake basins of Central Yunnan Plateau,and the landscapes with the smallest area were always unutilized land.During the study period,the ecological risk of the landscape in lake basins of Central Yunnan Plateau improved,with the area of low-risk area increasing and the area of medium-high-risk area decreasing.From 2000 to 2020,except for the sub-dimension index,each land-scape pattern index of unutilized land in the study area was the highest.Overall,the degree of grassland fragment-ation and loss is higher and shows an increasing trend,the degree of separation and disturbance of construction land is higher and shows a decreasing trend,and the sub-dimension of the watershed has a large gap with the sub-dimension of the rest of the landscape types.From the global spatial autocorrelation analysis,it can be seen that over the past 20 years,the ecological risk index of basin landscapes has shown a positive correlation and spatial agglomeration in spatial distribution is on the rise;from the local spatial autocorrelation analysis,it can be seen that during the study period,the"high-high"clusters are mainly distributed in the junction of Wuhua District,Xishan District,Guandu District,and Panlong District,and the junction of Chenggong District and Chengjiang City,and the"low-low"clusters are mainly distributed in the lakes and their surroundings and the areas where the vegetation grows densely.The study will play a positive role in the ecological remediation in lake basins of Cent-ral Yunnan Plateau,and also provide a strong support for regional ecological protection and sustainable develop-ment.关键词
景观生态风险/土地利用/景观格局指数/空间自相关/高原湖泊Key words
landscape ecological risk/land use/landscape pattern index/spatial autocorrelation/plateau lake分类
天文与地球科学引用本文复制引用
王舒,刘凤莲..滇中高原湖泊流域景观生态风险时空演变研究[J].西南林业大学学报,2024,44(9):63-73,11.基金项目
国家乡村振兴局委托项目(80026091881)资助 （80026091881）
云南省教育厅科学研究基金项目(2021J0592)资助 （2021J0592）
云南财经大学引进人才项目(2022D13)资助 （2022D13）
云南财经大学研究生创新项目(2022YUFEYC101)资助. （2022YUFEYC101）
