层次分析法在生态环境综合评价应用中的优化

层次分析法（Analytical Hierarchy Process，AHP），是一种常用的系统分析与决策方法，但在应用于青藏高原区域生态环境综合评价时，由于因素的权重值只能为正数，影响了表达效果。为此，本文对其进行了优化，改进了构造判断矩阵时的赋值方法，在评价过程中引入了负数。实验证明，优化后的方法能准确地评价青藏高原的生态环境。

THE OPTIMIZATION OF AHP IN ITS APPLICATION TO THE COMPREHENSIVE EVALUATION OF ECOLOGICAL ENVIRONMENT

The Analytical Hierarchy Process(AHP) is a common method for systematic analysis and designing.However,when it is used in comprehensive evaluation of the ecological environment of Qinghai-Tibet Plateau,the weight of factors must be positive,and this affects the expression effect.This paper deals with the optimization of AHP in its application to this field,which improves the assignment means in the building of judgment matrix,and introduces negative numbers to the process of evaluation.Tests prove that accurate evaluation of the ecological environment of Qinghai-Tibet Plateau can be achieved by using the optimized method.