Ecological Land Suitability for Arid Region at River Basin Scale:Framework and Application Based on Minmum Cumulative Resistance(MCR) Model  

作　　者：WEI Wei LIU Congying MA Libang ZHANG Xueyuan XIE Binbin 

机构地区：[1]College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070,China [2]College of Resources and Environment,Lanzhou University,Lanzhou 730030,China [3]College of Urban Economics and Tourism Culture,Lanzhou City University,Lanzhou 730070,China

出　　处：《Chinese Geographical Science》2022年第2期312-323,共12页中国地理科学（英文版）

基　　金：Under the auspices of National Natural Science Foundation of China(No.41861040,41761047)。

摘　　要：As an important and typical arid inland region in China,Shiyang River Basin plays an important role in maintaining the sustainable development of eco-environment,whose ecological land suitability restricts the development of the local human activities.Therefore,Shiyang River Basin was selected as the case study,the minimum cumulative resistance(MCR)model and GIS technique were integrated to create land suitability evaluation map.We calculated the MCR value of ecological source and living source,and divided the whole basin into five partitions according to the difference between ecological source and living source,and analyzed the patterns and characteristics of the ecological land suitability evaluation(ELSE)regions,respectively.The results showed that:1)The suitable ecological land includes prohibited development region and restricted development region,which accounts for 15.45%and 23.35%of the total land area of the Shiyang River Basin,respectively.These two regions mainly distributed high altitude region in the southern Qilian Mountain and low altitude region where had high density of rivers.2)The protection of ecological land requires not only conserving existing ecological land but also focusing on ecological buffer belts around ecological sources and improving ecological land service ability.3)Ecological networks should be constructed through artificial planting trees around the boundary of oasis and ecological restoration region.Buffer greenbelts should also be established between optimized development region and ecological restoration region.

关 键 词：ecological land suitability evaluation minimum cumulative resistance(MCR)model arid inland region ecological management Shiyang River Basin 

分 类 号：X826[环境科学与工程—环境工程]