灌区节水改造技术经济指标的综合主成分分析  

Comprehensive principal components analysis on technical and economic index of water saving reform for irrigation area

作　　者：姚杰[1] 郭宗楼[1] 陆琦[1] 

机构地区：[1]浙江大学农业工程系,浙江杭州310029

出　　处：《水利学报》2004年第10期106-111,共6页Journal of Hydraulic Engineering

基　　金：国家高技术研究发展规划资助项目(2001AA242121)

摘　　要：本文提出了用于评价灌区节水改造效益的6个指标,应用主成分分析原理建立了灌区节水改造效益评价的综合指标-综合主成分。对样本灌区节水改造效益的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,本文提出的灌区节水改造效益的综合主成分及其评价标准能较全面地反映灌区节水改造状况,较好地描述灌区节水改造的效益水平。Six indexes for benefit assessment of water saving reform for irrigation area are suggested. On this basis, the comprehensive principal analysis method for assessing the benefit of water saving reform is 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 proposed method can comprehensively reflect the result of reform.

关 键 词：灌区 节水改造效益 综合评价指标 主成分分析 

分 类 号：S274.1[农业科学—农业水土工程]