结合G1法与变权理论的杞麓湖流域生态用地分析  

Analysing Ecological Land Use in Qilu Lake Basin Using Combined G1 Method and Variable Weight Theory

作　　者：白少云 刘斌 潘佳威 刘加敏 陈敏 余珮珩 陈奕云[2,3] BAI Shao-yun;LIU Bin;PAN Jia-wei;LIU Jia-min;CHEN Min;YU Pei-heng;CHEN Yi-yun(Yunnan Survey and Design Institute of Water Conservancy and Hydropower,Kunming 650021,China;School of Resource and Environmental Science,Wuhan University,Wuhan 430079,China;State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China)

机构地区：[1]云南省水利水电勘测设计研究院,昆明650021 [2]武汉大学资源与环境科学学院,武汉430079 [3]中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,南京210008

出　　处：《长江科学院院报》2021年第3期45-50,共6页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金项目(41771440);国家高分辨率对地观测系统重大科技专项(89-Y40-G19-9001-18/20-03);云南省院士工作站建设专项(2015IC013);云南省创新团队建设专项(2018HC024)。

摘　　要：杞麓湖流域作为典型高原湖泊流域之一,生态极易遭到破坏。选取高程、坡度、人口密度、道路缓冲区、居民点缓冲区、水域缓冲区来构建生态敏感性评价的指标体系,并结合G1法、变权栅格理论确定各指标权重,进行杞麓湖流域生态敏感性评价和流域生态用地分析。结果表明:①引入变权栅格理论可有效避免因子之间的相关干扰;②高、中、低度敏感区分别占流域总面积的3.66%、71.08%、22.83%,不敏感区占比为2.44%;③93.81%的林地、99.22%的水域以及79.52%的其他用地处在高度敏感区和中度敏感区,63.02%的建设用地和54.79%的耕地处在低度敏感区与不敏感区。开展流域内的生态用地分析,为推动可持续土地资源利用开发和生态环境保护提供了重要依据。As a typical plateau lake basin,the Qilu Lake drainage basin is vulnerable to ecological damage.In this research we select such indicators as elevation,slope,population density,road buffer zone,residential buffer zone,and water buffer zone to construct an index system for ecological sensitivity assessment.By combining the“G1”method and the variable weight grid theory,we calculate the weight of each index,and on this basis,assessed the basin’s ecological sensitivity and analyzed the basin’s land use for ecological security.Results demonstrate that:1)incorporating variable weight grid theory effectively avoids the interference among factors;2)the areas of high,medium and low sensitivity regions account for 3.66%,71.08%,22.83%of the total area of the river basin,respectively,while insensitive area accounts for 2.44%;3)93.81%of forest land,99.22%of waters,and 79.52%of other land locate in highly sensitive and moderately sensitive areas,whereas 63.02%of construction land and 54.79%of cultivated land are located in areas of low sensitivity and insensitivity.Analyzing the ecological land use in the river basin would provide an important basis for promoting sustainable land resource use and exploitation as well as eco-environmental protection.

关 键 词：生态敏感性 生态用地 变权栅格理论 G1法 杞麓湖流域 

分 类 号：X826[环境科学与工程—环境工程]