水库区域生态脆弱性评价研究

Study on Environmental Vulnerability Assessment of Reservoir Area

随着生态环境问题日益突出,生态脆弱性评价成为研究热点,但目前对水库区域生态脆弱性的研究较少。为了给水库区域生态环境保护规划提供依据,以出山店水库区域为例,以气象、社会经济等数据和压力-状态-响应评价模型为基础,构建生态脆弱性评价指标体系,将生态脆弱性划分为重度、中度、轻度、微度、潜在5个等级,运用空间主成分分析法对生态脆弱性进行定量评价。结果表明:出山店水库区域生态脆弱性驱动因子主要有土地垦殖率、森林覆盖率、坡度、土地利用程度、地形起伏度和人口密度等,以库区为中心靠近水库沿岸地区生态脆弱性高、远离库区生态脆弱性低,近库区域是生态环境的重点保护区域。

As the ecological environment issue becomes more and more prominent,the ecological environment vulnerability assessment has become a research hotspot.In order to provide the basis for the ecological environment protection planning of the reservoir area,taking the Chushandian Reservoir area as an example,based on meteorological,social and economic data and the pressure-state-response evaluation model,the ecological environment vulnerability evaluation index system was constructed.The regional ecological environment vulnerability was divided into five grades of severe,moderate,mild,micro degree and potential.Using the principal component analysis method to quantitatively evaluate the vulnerability of ecological environment.The results show that the main driving factors of ecological vulnerability are land reclamation rate,forest coverage rate,slope,land use degree,topographic fluctuation and population density.In the reservoir area,the eco-logical vulnerability is high and the ecological vulnerability is low away from the reservoir area and the nearby reservoir area is the key protected area of the ecological environment.