主成分分析法在城镇土地生态安全评价中的应用——以山东省临沂市为例

在对城镇土地生态安全进行概述的基础上,本着科学性、系统性等原则,从资源支持系统、社会支持系统、经济支持系统、环境支持系统4个方面选取25项具有代表性的评价因子,构建城镇土地生态安全评价因子体系,并采用主成分分析法对临沂市10个县区进行了城镇土地生态安全综合评价。结果表明,临沂市各县区的土地生态状况差距较大。主成分分析法是一种切实可行的高信度的生态安全评价方法。

Application of Primary Component Analysis in the Assessment of Land Ecological Security at Township Level

Based on having good understanding of the concept of land ecological security at town level,in the paper the indicator system of land ecological security evaluation,which included 25 indicators and was in view of economy and society safety system,resource and environment security system,was mainly established.Then the land ecological security of 10 counties of Linyi City was evaluated with primary component analysis method.The result showed that the land ecological status of 10 towns had much difference,and primary component analysis method was a feasible land ecological security evaluation method.