基于AHP-CV法的赤水市生态敏感性评价

Ecological Sensitivity Evaluation Based on AHP-CV Method in Chishui City

以贵州省赤水市为研究对象,选取6个评价因子采用层次分析法(AHP)与变异系数法(CV)进行组合赋权,构建赤水市生态敏感性评价模型。研究发现:在该区域中,水域缓冲区、植被覆盖度和土地利用类型是影响该区域的生态敏感性的主要因素;赤水市的生态敏感性处于中等偏上的水平,低度敏感区、轻度敏感区、中度敏感区、高度敏感区、极度敏感区的占比分别为6.79%,20.52%,31.26%,27.83%和13.61%,中度、高度、极度敏感区主要分布于赤水市南面,而低度敏感区、轻度敏感区主要分布在赤水市北面,各区敏感性均呈现出散布于赤水市全域的状态。

Taking Chishui City as the research object,six evaluation factors were selected and weighted by AHP and CV,and the ecological sensitivity evaluation model of Chishui City was established.It was found that water buffer zone,vegetation coverage and land use type are the main factors affecting the ecological sensitivity of this area.The ecological sensitivity of Chishui City is on the upper middle level,with low sensitivity,mild sensitivity,moderate sensitivity,high sensitivity and extreme sensitivity accounting for 6.79%,20.52%,31.26%,27.83%and 13.61%respectively.Moderate,high and extremely sensitive areas are mainly distributed in the south of Chishui City,while low and mild sensitive areas are mainly distributed in the north of Chishui City,but the sensitivities of all areas are scattered throughout Chishui City.