生态学杂志2024，Vol.43Issue(3)：842-850,9.DOI:10.13292/j.1000-4890.202403.038
基于土地利用/覆被的滇池流域生境质量时空演变
Spatial and temporal variations of habitat quality in Dianchi Lake basin based on land use/cover change
摘要
Abstract
Dianchi Lake is the largest high-altitude freshwater lake in southwest China and the largest freshwater lake in Yunnan Province.Understanding the spatiotemporal variations of land use/cover types and habitat quality in the Dianchi Lake basin is of great significance for the protection of the ecological environment in the basin.Based on land use/cover data from 1988 to 2018,we analyzed the spatiotemporal variations in habitat in the Dianchi Lake basin using InVEST model and the spatial analysis tool of GIS,and quantified the spatial aggregation and evolution characteristics of habitat quality using Moran's I index and hot spot analysis.The results showed that:(1)Land use/cover types in the Dianchi Lake basin changed dramatically,from the dominance of farmland in 1988 to the dominance of urban land in 2018.(2)The overall habitat quality in the basin declined,with lower habitat quality in the urban areas surrounding Dianchi Lake and higher quality in the surrounding mountains and hills,but distrib-uted sparsely.(3)The cold and hot spots of habitat followed aggregated distribution.Hot spots were mainly located in the surrounding forests,and their range gradually shrunk with time.The cold spots were located in the urban are-as surrounding Dianchi Lake,and their number increased greatly over time.Our results indicate that the drastic change of land use/cover during urbanization is a main reason for the changes of urban habitat,providing reference for optimizing land use types and improving or maintaining biodiversity in Dianchi Lake Basin.关键词
生境质量/土地利用/覆被变化/InVEST模型/滇池流域Key words
habitat quality/land use/cover change/InVEST model/Dianchi Lake basin引用本文复制引用
杨菡,李晓娜,邓忠坚,张卓亚,潘慧萍..基于土地利用/覆被的滇池流域生境质量时空演变[J].生态学杂志,2024,43(3):842-850,9.基金项目
国家自然科学基金青年项目(31901322)和滇池流域生物多样性调研项目(2063010)资助. （31901322）
