基于多指标的水安全评价模型研究

通过建立基于多指标水安全评价模型,设计最佳水安全评价指标体系,得到了更加有效的水安全指数。针对水安全评价中存在信息冗余和评价效果差的问题,利用相关分析与主成分分析相结合的方法,剔除不重要的评价指标,运用熵权法得到2002-2011年建三江水安全最终评价指标中各评价对象的综合得分,即水安全指数。实例分析表明,该方法提高了评价模型的显著性和有效性,且计算过程可以被有效控制,为多指标水安全评价提供了新思路。

Water Safety Evaluation Model Based on Multiple Index

By establishing a water security evaluation model based on multi-index and designing an optimal evaluation index system of water security ,a more effective water security index is gotten .According to the problems of information redundancy and the poor e‐valuation effect in water security evaluation ,this paper first uses the correlation-principal component analysis to eliminate unimpor‐tant evaluation index ,then uses the entropy method to obtain comprehensive scores of Jiansanjiang's every evaluation object in ulti‐mate evaluation index from 2002 to 2011 ,namely water security index .The case analysis result shows that the proposed method im‐proves the significance and validity of the evaluation model ,what's more ,the calculation process can be effectively controlled .In a word ,the proposed method provides a new idea for the multi-index evaluation of water security .