基于熵权和主成分分析水资源承载能力评价分析

ENTROPY AND PRINCIPAL COMPONENTS ANALYSIS-BASED STUDY ON WATER RESOURCES CARRYING CAPACITY

以山西省为对象,提出了用于评价水资源承载能力的评价指标体系,应用主成分分析原理建立了山西水资源承载能力的评价的综合指标-综合主成分,分别选取出了反映自然支持力指标、社会经济技术水平指标和社会生活水平指标的主成分,并用熵值法对其赋权,建立了相应的水资源承载能力变化驱动因子的多元线形回归模型,计算出山西各地市水资源承载力的综合得分。对综合主成分进行的正态性检验结果表明,它服从正态分布。在此基础上提出了相应的评价标准。应用结果表明,本文提出的山西水资源承载能力的综合主成分及其评价标准能较全面地反映区域水资源承载能力状况。

Take Shanxi Province as an example , the index system for evaluation of water resources carrying capacity is suggested. On this basis, the comprehensive principal analysis method for assessing the water resources carrying capacity and a multivariate linear regression model for corresponding driving factors of water resources carrying capacity are established. The analysis on sampling shows that it obeys the law of normal distribution. The corresponding standards for assessment are deduced accordingly. The application shows that the method can comprehensively reflect the water resources carrying caoacity.