北京西北风口地区北沙河水系生态修复战略研究

Study on Ecological Restoration Strategies of Beisha River System in Beijing Western and Northern Wind Gap Area

北京市西北风口地区主要是指昌平区西北部的阳坊、南口、马池口、流村四镇。北沙河水系生态环境脆弱,对于维持风口地区生态有着非常重要的作用,与昌平区其他小型河道相比,北沙河无论是从地理位置还是其水量方面都具有极大的优势和最显著的作用。通过对北沙河生态现状的调查分析,发现当前北沙河水系存在水资源匮乏、水体污染严重、生态机理破碎等主要问题,提出修复北沙河水系功能的主要措施。

Beijing western and northern wind gap area mainly refers to four towns including Yangfang,Nankou,Machikou and Liucun town in the northwest of Changping District.The river system ecological environment of Beisha River is weak.Compared with other small rivers in Changping District,the river system of Beisha River is playing a more significant role in maintaining the ecology of wind gap area in terms of both the geographic position and water amount.Through the survey and analysis about the status quo of ecology in Beisha River,main problems of the river system of Beisha River were found out,which include water resource insufficiency,serious water pollution and broken ecological mechanism.Through the analytical contrast to Dongsha River and Nansha River,the ecological strategy position of Beisha River was highlighted.Finally,main measures to repair the river system function of Beisha River were proposed.