层次分析法改进及其在橡胶林种植对流域输沙影响评价中的应用

Improvement of AHP and Its Application to Impact Assessment of Rubber Plantation on Sediment Transport in Watershed

层次分析法广泛应用于指标权重计算和决策,但在判断矩阵构造和一致性检验中存在局限性.针对传统层次分析法及其现有改进方法所存在的数值标度和一致性检验两个关键问题,提出通过无限制标度建立与专家判断初衷更为吻合的因素间相对重要程度数值标度方法,并通过传递的方式构造完全一致性矩阵,对不满足一致性的原判断矩阵根据最大差异项进行调整.云南橡胶林种植对流域输沙影响评价指标权重确定应用实例表明,该改造方法降低了专家对判断矩阵数值标度的难度,并在解决判断矩阵不满足一致性问题的同时最大程度保留了原判断矩阵的信息.

The analytic hierarchy sion; but there are limitations in process（AHP） is widely used in the construction of the judgment the calculation of index weight and decimatrix and the consistency test. For the two key issues as numerical scale and consistency test in traditional AHP and its improved methods, an unlimited scale method is proposed to fully consistent with the original intention of experts in determining the relative importance among the factors, and constructed entirely consistency matrix by way of passing, to adjust the maximum difference in original matrix when it does not content with the consistency. The assessment index weight application examples of watershed sediment transport impact of rubber plantation in Yunnan Province show that the modified method not only reduces the difficulty of experts to determine the value of the matrix, but also resolve the issue that matrix does not content with the consistency while retaining the maximum information on the original matrix.