生态科学2025，Vol.44Issue(4)：19-28,10.DOI:10.14108/j.cnki.1008-8873.2025.04.003
元谋盆地土地利用景观格局的地形梯度效应分析
Topographic gradient effect analysis of land use landscape pattern in the Yuanmou Basin
摘要
Abstract
Studying the characteristics of land use landscape pattern changes under different topographic conditions is the basis for mountainous environment land development planning and decision-making.Taking the Yuanmou Basin as the research object,based on four periods of remote sensing image data from 1990 to 2022,the characteristics of land use landscape pattern changes at different altitudes,slopes,and topographic positions in the Yuanmou Basin were studied using the landscape pattern index method and GIS spatial analysis method,and its driving mechanism was analyzed.The results showed that:(1)From 1990 to 2022,the fragmentation of the land use landscape in the Yuanmou Basin increased,the heterogeneity of the landscape has increased,and the diversity and evenness of the landscape improved.(2)Grasslands and forests were the main landscape types in the study area,where the main transition directions were a decrease in grasslands and an increase in construction land,arable land,and forests.(3)Each landscape type had a clear distribution pattern on the topographic gradient.Arable land,construction land,bodies of water,and unused land were mainly distributed in flat river valley areas with an altitude<1300 m,a slope<15 °,and a topographic position<0.3816.Grasslands were primarily distributed in the low mountain hilly area with an altitude of 1300-1700 m,a 6-25 ° slope,and a topographic position of 0.3816-0.7692.Forests were mainly distributed in the middle and high mountain areas with an altitude>2000 m,a slope>25°,and a topographic position>0.7692.(4)Natural environmental factors determined the topographic gradient pattern of the land use landscape structure,while the influence of socio-economic and policy factors on the regional land use landscape pattern was deepening.The results can provide a reference for the ecological environment restoration,land resource status,and policy-making and planning of land resources in this area.关键词
土地利用/地形梯度/景观格局/元谋盆地Key words
land use/topographic gradient/landscape pattern/Yuanmou basin分类
社会科学引用本文复制引用
赵磊,史正涛,何光熊,何丽,喜文飞,蒋琴..元谋盆地土地利用景观格局的地形梯度效应分析[J].生态科学,2025,44(4):19-28,10.基金项目
云南省水土流失与绿色发展重点实验室(202205AK070026-01) （202205AK070026-01）
云南省创新引导与科技型企业培育计划项目(202304BT090025-04) （202304BT090025-04）
云南省自然生态监测网络监测项目(2025-YN-18) （2025-YN-18）
