生态科学2023，Vol.42Issue(6)：74-83,10.DOI:10.14108/j.cnki.1008-8873.2023.06.008
2000-2020年延安市土地利用景观格局时空演变及驱动因子
Spatial-temporal evolution and driving factors of land use landscape pattern in Yanan City from 2000 to 2020
摘要
Abstract
To provide the theoretical basis for regional land use and ecological environment protection,the spatial-temporal evolution and driving factors of land use landscape pattern in Yanan City were analyzed.Based on the three-phase land use data of Yanan City from 2000 to 2020,this paper analyzed the characteristics of land use and landscape temporal and spatial pattern change in Yanan City from the aspects of land use area change,area transfer characteristics,and landscape index,and analyzed the driving factors of the change.The results showed that:(1)From 2000 to 2020,the land use in Yanan City was dominated by forest land and grassland;the area of cultivated land,water area,and unused land were decreased;construction land continued to increase and changed the most.The increase of construction land was mainly distributed near the river and relatively flat areas.The main inflow types were cultivated land,forest land,and grassland.At the same time,mutual transformation was among cultivated land,forest land,and grassland.(2)The land use types were mainly concentrated in the range of 500-1500 m altitude and 5-25° slope.(3)Grassland was the dominant landscape type;the fragmentation degree of forest land and grassland was higher;the connectivity of construction land was enhanced and tended to be concentrated.On the whole,the irregular degree of patches increased,the heterogeneity of landscape increased,and the composition of landscape structure tended to be complicated.(4)Natural factors such as annual precipitation and elevation had great influence on the change of landscape pattern index,while the influence of land use and vegetation change dominated by human activities on the landscape pattern index was gradually increasing.关键词
景观格局/景观指数/驱动因子/地理探测器/延安市Key words
landscape pattern/landscape index/driving factor/Geodetector/Yanan City分类
天文与地球科学引用本文复制引用
李凯,张北赢..2000-2020年延安市土地利用景观格局时空演变及驱动因子[J].生态科学,2023,42(6):74-83,10.基金项目
国家自然科学基金项目(41701025) （41701025）
江苏师范大学研究生科研与实践创新计划项目(2021XKT0057) （2021XKT0057）
