干旱区地理2024，Vol.47Issue(6)：1073-1083,11.DOI:10.12118/j.issn.1000-6060.2023.242
基于生态网络的生态修复关键区识别
Identification of the key areas of ecological restoration based on the ecological network:A case study of Yan'an City
摘要
Abstract
Delimiting key areas of ecological restoration is the prerequisite and foundation for implementing dif-ferentiated ecological restoration strategies.Taking Yan'an City,Shaanxi Province,China as an example,this pa-per employs morphological spatial pattern analysis to construct landscape patterns and integrate the probability of connectivity index to identify ecological sources.In addition,it utilizes the minimum cumulative resistance mod-el based on impact factors like land use and normalized difference vegetation index to calculate the minimum cu-mulative resistance difference,extract ecological corridors,construct an ecological network,divide corridor lev-els by cost connectivity,and analyze network structure characteristics using graph theory.Finally,ecological corri-dors and landscape patterns are superimposed to identify the critical areas for ecological restoration in Yan'an City.The results show that:(1)Yan'an City has an extensive coverage of forest and grassland,although with scat-tered overall coverage and poor landscape connectivity.(2)Ecological sources in Yan'an City are mainly distrib-uted in the southwest and southeast,while the northeast has poor habitat quality and is unsuitable for species habi-tat.(3)Ecological corridors mainly comprised forest landscapes,including 10%of the crucial corridors,with ex-tremely uneven spatial distribution of the ecological networks.(4)Ecological networks'closure,complexity,and connectivity are low,and the network stability is poor.(5)Islets in Yan'an City are mainly distributed in Luoch-uan County,with key areas of ecological restoration mainly concentrated in Fu County and Huanglong County,in-cluding 21.93%of the Level 1 restoration areas.These results can provide a reference and basis for identifying the critical areas of ecological restoration and constructing ecological networks in Yan'an City.关键词
生态修复关键区/最小累计阻力差值/生态网络/延安市Key words
key areas of ecological restoration/minimum cumulative resistance difference/ecological network/Yan'an City引用本文复制引用
许忠洋,王琤,顾彤,王诗雨,裴晨阳,张青峰..基于生态网络的生态修复关键区识别[J].干旱区地理,2024,47(6):1073-1083,11.基金项目
陕西省自然科学基础研究计划项目(2021JZ-17) （2021JZ-17）
陕西省农业协同创新与推广联盟项目(LMR202204)资助 （LMR202204）
