基于和谐性指标的土地利用生态安全评价

Land-use eco-safety evaluation based on concordance coefficient

土地资源是经济发展的基础,土地利用生态安全问题受到广泛关注。选取适当的土地利用生态安全指标体系,进行归一化处理,并将和谐性指标引入到主成分分析法中,在不影响评价结果的基础上从较多的指标中找出几个能较好反映原来资料信息的综合指标,将原指标体系投影到几个主成分指标中,以得到一个整体的评价值。将这种基于和谐性指标的主成分分析法应用于海河流域土地利用生态安全评价中,得到了比较理想的结果。

Land resource is the foundation for the development of the social economy.More and more attention is put on eco-safety.This paper chooses proper index system for land-use eco-safety,normalizes the data and introduces the concordance coefficient into the principal component analysis.Without affecting the evaluating result,this paper chooses several comprehensive indices which can preferably reflect the original data from the original indices,projects the original index system to several principal component indices in order to get an integral evaluating value.Principal component analysis,which is based on concordance coefficient,is used in the land-use eco-safety evaluation of Haihe River Basin,therefore,the evaluation can get a comparative perfect result.