【摘要】 土地资源是人类赖以生存的资本,土地利用生态安全问题也日益被重视。该文采用主成分聚类分析的方法对土地利用生态安全进行评价并分类。先建立土地利用生态安全评价的指标体系,然后用主成分分析剔除存在相关性、信息重叠的指标,再利用主成分分析得到的具有代表性的主成分指标代替原来的评价指标,对土地利用生态安全进行聚类分析,所得结果客观,为土地利用生态安全评价提供参考依据。更多还原

【Abstract】 Land resources is depending capital of human existence,therefore,more and more problems of ecological safety in land utilization are concerned.Principal component analysis and cluster analysis were used in appraising and classifying ecological safety in land utilization.The author established firstly the index system of ecological safety assessment in land utilization,then applied principal component analysis to eliminate the indexes having the relativities and overlap information.The representative indexes from principal component analysis process substitute for the primary indexes.And then cluster analysis method was used to analyze ecological safety in land utilization.The conclusion is objective,and it can provide reference to ecological safety.更多还原