北京山区河流生态系统健康评价方法及其应用研究

Method of assessment on ecosystem health of mountain rivers in Beijing and its application

北京山区河流受到人类活动强烈影响,其生态系统出现了不同程度的退化。本研究在调查山区典型河流生态状况的基础上,建立了山区河流生态健康评价指标体系、评价标准和评价模型,并在北京拒马河进行了应用。结果表明,拒马河整体处于健康状态,但有向亚健康和受损状态发展的趋势,为此提出了河槽生境构建和生态护岸改造技术等生态修复策略及建议。

Under the strong influences from the human activities, the ecosystems of the mountain rivers in Beijing are degraded to various extent. Based on the investigation made on the eco-environmental status of the typical rivers in the mountain regions therein, the ecosystem health assessment index system, assessment criteria and assessment model for the mountain rivers are es- tablished herein and then applied to the assessment on Jumahe River in Beijing. The result shows that Jumahe River is generally in a health status, but has a developing trend to the subhealthy and the damaged status; for which the eco-restoration strategy and suggestion for the technologies such as the river channel habitat construction, eco-slope protection, etc. are proposed as well.