本文在北京山区沟域生态承载力内涵的基础上，从实现沟域经济社会可持续发展及经济与环境协调发展的角度，从生态弹性指数、资源环境承载指数、资源环境压力度等方面，构建了北京山区沟域生态承载力评价指标体系，并应用综合评价法构建了评价模型，为北京山区沟域的生态承载力评价提供了技术依据。

On the basis of the ecological carrying capacity connotation and to realize the coordinated development of economics and environment in Beijing mountainous valley areas, the comprehensive evaluation index system was built which included ecosystem elasticity level，bearing capacity index and stress index of ecotourism. The comprehensive evaluation method was constructed, which could provide the technical basis for the evaluation of ecological carrying capacity in Beijing mountainous valley areas.