Spatial distribution of ecological security status assessment of West-Liaohe River based on geographic information system  

作　　者：WANG Geng WU Wei 

机构地区：[1]School of Urban and Environment Science,Liaoning Normal University,Dalian 116029,China [2]School of Environmental and Biological Science and Technology,Dalian University of Technology,Dalian116024,China

出　　处：《Frontiers of Environmental Science & Engineering》2007年第4期471-476,共6页环境科学与工程前沿（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.70073003);the Specialized Research Found for the Doctoral Program of Higher Education of MOE of China(Grant No.20020141027);the Fund for Youth Scholars from the Department of Education of Liaoning Province(Grant No.2004F010).

摘　　要：Eco-security assessment is a hot research area in resource and environmental science,which involves data with much spatial,non-linear,and random features.Geographic information system(GIS),as a useful tool to analyze and manage spatial information,has a superior advantage in this field.A case study in the western part of the Liaohe River featuring a method of eco-security spatial differences(ESSD)based on GIS is developed in this paper.The method includes four steps:1)developing the pressure-state-response(P-S-R)framework with site data;2)digitizing West-Liaohe River and setting its GRID database of eco-security assessment indicators;3)figuring out the relative membership degree(RMD)of eco-security indicators by using the analytical hierarchy process with the weight of indicator;4)classifying the security zone and mapping the assessment result of eco-security status in grid by GIS method of assigning and clustering.The visual spatial differences of eco-security based on GIS enables decision makers to know the status of eco-security better in making policies for achieving sustainability.

关 键 词：ecological security status assessment spatial distribution West-Liaohe River 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]