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以青海湖环湖地区为研究区,从生态环境脆弱性的影响因子和脆弱性形成的结果表现入手,通过遥感与GIS技术提取出8项生态因子包括植被指数、土壤亮度和土壤湿度指数、高程和坡度以及气温降水和土地利用作为评价指标,利用层次分析法(AHP)计算各评价指标的权重,然后计算研究区综合脆弱度,并根据统计结果将脆弱度的大小划分为微度脆弱、轻度脆弱、中度脆弱和重度脆弱4个不同等级。结果表明:研究区轻度脆弱和中度脆弱所占面积比例较大,分别占到研究区陆地面积的35.2%和40.7%,说明该区总体环境质量较好。
Taking the lake and lake area of Qinghai Lake as the research area, 8 ecological factors including vegetation index, soil brightness and soil moisture index, soil height index and soil moisture index were extracted from the results of the impact factors and vulnerability of the ecological environment vulnerability. And gradient of temperature and temperature precipitation and land use were used as evaluation indexes. Analytic hierarchy process (AHP) was used to calculate the weight of each evaluation index, and then the comprehensive vulnerability of the study area was calculated. According to the statistical results, the vulnerability degree was classified as micro-fragile and light Fragile, moderately fragile and severely weakened at four different levels. The results showed that the proportion of lightly fragile and moderately fragile in the study area was large, accounting for 35.2% and 40.7% of the total land area of the study area respectively, indicating that the overall environmental quality of the study area is good.