【摘要】 城市水生生态系统的最小生态需水量的确定是指导城市水资源综合规划、城市生态建设的基础内容之一。该文在对国内外生态需水研究进展调研与分析的基础上,对城市的水生生态系统最小生态需水计算方法进行了探讨与研究,提出了以外包络线为核心计算方法。并以北京市区水生生态系统为研究案例,建立了相应的生态目标,对水生生态系统生态需水重点参数进行了分析筛选,并且基于生态目标和城市水生生态系统的特点,计算了北京城区水生生态系统最小生态需水量,结果为5.8亿m3/a。更多还原

【Abstract】 The assessment of ecological water requirements of urban aquatic eco-systems is the key element for integrated water resources planning and urban ecological construction. Various methods have been used to calculate ecological water requirements. This paper describes a calculational method based on out-cover line theory. The method is used to assess the ecological water requirements of the Beijing urban aquatic eco-system. The assessment objective is to rehabilite the aquatic ecology. The key parameters are related to the ecological state of the Beijing aquatic eco-system. The minimum ecological water requirement in the Beijing urban aquatic eco-system will be about 5.8×108 m3/a.更多还原