石羊河流域生态脆弱性评价研究

综合分析自然条件和人类活动对区域生态系统的两方面影响，建立了生态脆弱性评价指标体系，运用层次分析法和综合指数法计算了石羊河流域9县（区）的生态脆弱度分值。根据计算结果，将石羊河流域划分为4级生态脆弱区，分别为极强度脆弱区、强度脆弱区、中度脆弱区和轻度脆弱区。在此基础上，对各脆弱区提出生态治理对策，为今后流域开展生态经济功能区划提供依据。

Study on Assessment of Ecological Fragility in Shiyang River Basin

By comprehensive analyzing two influences to regional ecosystem from natural conditions and human activities, this paper established an index system of assessment of ecological fragility. And then, by means of AHP and synthetical index, this paper calculated the scores of ecological fragility degree of the 9 counties in Shiyang River Basin. According to the calculating result, the Shiyang River Basin was divided into 4 classes of eco- logical fragility zones, each of which was respectively named extremely intensive fragility zone, intensive fragility zone, medium fragility zone and mild fragility zone. On this basis, this paper put forward some ecological management strategies for each ecological fragility zone. This study would provide bases for starting ecological and economical functional regionalization in the basin in future.