黄河中游区佳芦河流域生态脆弱性评价

Assessment of Ecological Vulnerability in Jialu River Basin in Yellow River Midstream Area

生态脆弱性评价可为生态脆弱流域生态经济系统的恢复与重建提供重要的依据。在分析影响该流域生态脆弱性因素的基础上,从成因和表现结果两个方面选择构建了佳芦河流域生态脆弱性指标体系,将人口素质等人文信息指标纳入生态脆弱性指标体系,并利用AHP确定了各指标的权重。采用基于三角白化权函数灰色聚类评价方法对佳芦河流域生态脆弱性进行了综合性评价,结果表明:佳芦河流域生态脆弱性对Ⅰ、Ⅱ、Ⅲ灰类的聚类系数分别为0.636、0.389、0.472,聚类系数隶属于灰类Ⅰ,该流域生态脆弱性为高度脆弱。

An important basis is provided ecological vulnerability assessment for ecologically fragile watershed ecosystem economic systems restoration and reconstruction.Based on an analysis of the impact factors on the ecological vulnerability in the basin,an ecological fragility index system is built to consider the causes and the results of manifestations in Jialu River Basin,and the quality of the population and other cultural information is contained in the index system of ecological fragility,and AHP was used to determine the weight of each index.The AHP-grey clustering method is utilized to evaluate the ecological fragility in Jialu River Basin.The results showed that: the ecological fragility of theⅠ,Ⅱ,Ⅲ grey class clustering coefficients were 0.636,0.389,and 0.472 in Jialu River Basin;apparently the grey type Ⅰ clustering coefficient was the largest.Therefore,the highly vulnerable of the ecological fragility in this area can be determined in this basin.