青海湖流域防沙治沙生态效益现状评价及分析

本研究选择了青海湖周边沙漠化防治区,对研究区内的土壤和植被指标进行了野外观测,并对周边农牧户基本状况及生态环境保护意识进行了调查,建立了青海湖沙漠化治理生态效益评价指标体系,采用层次分析法确定了指标权重,通过模糊评价的方法计算得出各指标的隶属度,最终得出以下结论:①通过专家系统打分建立判断矩阵,经计算得出生态效益各指标权重,明显看出,植被在青海湖沙漠化防治过程中具有非常重要的作用。②根据模糊评价结果得出研究区内目前防沙治沙生态效益差,说明青海湖防沙治沙工程生态恢复还处于初级阶段,综合治理生态系统建设未达到标准,生态系统仍非常脆弱。③通过农牧户基本情况及生态意识调查,发现研究区的农牧户生态环境保护意识较差,对生态环境了解及认识程度远远不够,还需要加强农牧民的生态环境保护意识。

Assessment and Analysis of Ecological Benefit of Combating Desertification around Qinghai Lake

Through field surveying the soil and vegetation characteristics and investigating the cognition of farmer and herdsman to ecological protection around the Qinghai Lake, an assessment index system of ecological benefit of combating desertification was established; the weight values of assessment indices were obtained by analytic hierarchy process and the membership degrees were obtained through fuzzy evaluation. Results are as following: (1) Vegetation was very important in desertification combating; (2) The assessment index value of ecological benefit of combating desertification around Qinghai Lake was 23, which indicated the ecological benefit was poor, and the desertification combating around Qinghai Lake was still at primary stage; and (3) the cognition of farmers and herdsmen around the Qinghai Lake to the ecological environment protection was limited, and the ecological environment protection education should be strengthened.