基于模糊综合评价法的森林生态系统健康评价——以北川县自然保护区为例

Forest Ecosystem Health Assessment Based on Fuzzy Synthetic Appraisal: Taking the Nature Reserve in Beichuan County as an example

摘要: 以北川县自然保护区森林生态系统为研究对象,通过主成分分析的定量筛选和定性筛选相结合的方法,建立了森林生态系统健康评价指标体系,采用灰色关联法确定权重,构建了模糊综合评价模型对其森林生态系统健康进行了综合评价。结果表明:北川县自然保护区森林生态系统健康状态偏向于亚健康(评价值为2.77),海拔是影响其健康的主要因子。

Abstract: In this paper,taking the case study of forest ecosystem of the nature reserve in Beichuan county for example,qualitative and quantitative methods were used to establish an assessment index system,the weight of each index was obtained by the principal component analysis,and then the fuzzy model was set up to assess the forest ecosystem of the nature reserve in Beichuan county. The results showed that forest ecosystem of the nature reserve in Beichuan county was is in a subhealthy state (value,2.77),and the elevation was the most influential element on forest ecosystem health.