人民长江2024，Vol.55Issue(8)：45-52,8.DOI:10.16232/j.cnki.1001-4179.2024.08.007
基于景观格局指数的河流生境特征描述方法研究
Description method research of river habitat characteristics based on landscape pattern indices
摘要
Abstract
In this paper,the Heishui River,a tributary of the Jinsha River,was selected as a research object.With the help of the landscape pattern index,an index set describing the habitat characteristics was screened and established.The changing law of the habitat characteristics in the section of the Heishui River where the Sujiawan Power Station is located was analyzed,providing a basis for monitoring the sustainable development of the river and the restoration of the habitat.The results showed that the tem-poral and spatial distributions of habitat patches differed significantly under different working conditions.A total of 11 representa-tive indicators were extracted by the principal component analysis to describe the habitat characteristics in terms of shape,aggre-gation,complexity,etc.The set of habitat indicators obtained through the screening had four different trends with the flow changes,among which,the percentage of the patches in the landscape area,the degree of connectivity,the wholeness,and the radius of gy-ration-weighted area index were associated with the changes in fish-weighted available area significantly.The habitat landscape pattern indices reflect changes in fish habitat patch configuration and its quality,which can provide a reliable monitoring indicator for fish habitat restoration.关键词
河流生境特征/景观格局指数/小水电开发/黑水河Key words
river habitat characteristics/landscape pattern index/small hydropower development/Heishui River分类
资源环境引用本文复制引用
何春杉,李晓兵,梁瑞峰,李克锋..基于景观格局指数的河流生境特征描述方法研究[J].人民长江,2024,55(8):45-52,8.基金项目
长江水科学研究联合基金项目(U2240212) （U2240212）
科技基础资源调查专项(2022FY100203) （2022FY100203）
