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).
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 ...