基于压力-状态-响应模型的黄柏河生态系统健康评价

为定量评估黄柏河生态系统健康状态,以压力-状态-响应概念模型为基础,构建黄柏河生态系统健康评价指标体系,采用层次分析法确定指标权重,运用集对分析和属性识别理论对黄柏河生态健康现状进行综合评价。结果表明:黄柏河生态系统综合健康状况处于中等水平,其中压力子系统、状态子系统和响应子系统的健康等级分别是良、中等和良,水体富营养化指数、农药施用强度、水土流失率等是影响黄柏河生态健康状况的主要因素。

Ecosystem health assessment for Huangbai River based on PSR model

Based on the pressure-state-response(PSR)conceptual model, an assessment index system of river ecosystem health was established for quantitative assessment of the ecosystem health status of the Huangbai River. The analytic hierarchy process was used to determine the index weight. The ecosystem health status of the Huangbai River was evaluated comprehensively using set pair analysis and attribute recognition theory. The results show that the comprehensive ecosystem health status of the Huangbai River was at the medium level, with the health status of the pressure subsystem, the state subsystem, and the response subsystem at a high level, medium level, and high level, respectively. The main factors that affect the ecosystem health of the Huangbai River included the water eutrophication index, pesticide application intensity, and soil erosion rate.