北京市白河和潮河流域生态健康评价

发布时间：2018-04-22 11:50

本文选题：流域健康 + 白河　；参考：《生态学报》2017年03期

【摘要】：选取北京市重要的饮用水源密云水库上游白河和潮河流域,结合北京山区流域生态现状,构建了涵盖水域生境结构、水生生物、生态压力和陆域生态格局与功能、生态压力5大类13项指标的评价指标体系,开展了流域生态健康评价。结果表明白河和潮河流域的健康状态整体处于良好等级,但水生生物和陆域生态格局状况相对较差。14个子流域的健康状况差异并不显著,琉璃河、白河下段、汤河上游的健康状况相对较好,潮河中下段和小汤河的健康状况相对较差。流域内不合理的畜禽养殖、岸边带种植及民俗旅游是导致流域生态健康退化的主要原因,建议加强污染负荷排放的控制和监管涉水活动对水生生境的干扰以改善流域健康状况,并重点关注可指示水生态系统早期退化的生物指数,以实现可持续性和适应性的流域管理,保障密云水库的水生态安全。
[Abstract]:This paper selects Baihe and Chaohe basins, an important drinking water source, in the upper reaches of Miyun Reservoir in Beijing, and combines with the ecological situation of the mountain basin in Beijing, and constructs the ecological structure, aquatic organisms, ecological pressure and land ecological pattern and function covering the water area. The evaluation index system of 13 indexes of 5 categories of ecological pressure was used to evaluate the ecological health of watershed. The results showed that the health status of Baihe and Chaohe basins was in good grade, but there was no significant difference in the health status of aquatic organisms and terrestrial ecological patterns in the lower reaches of Baihe River and Baihe River. The health status of the upper reaches of the river is relatively good, and that of the middle and lower reaches of the tidal river and Xiaotang river is relatively poor. Unreasonable livestock and poultry breeding, coastal planting and folklore tourism are the main causes of ecological health degradation in the basin. It is suggested that the pollution load discharge control and the disturbance of water activities to aquatic habitats should be strengthened in order to improve the health status of the basin. In order to realize the sustainable and adaptive watershed management and ensure the water ecological security of Miyun Reservoir, the biological index which can indicate the early degradation of water ecosystem is focused on.
【作者单位】：北京市环境保护科学研究院国家城市环境污染控制工程技术研究中心;
【基金】：国家水体污染控制与治理科技重大专项(2012ZX07203-001-01) 北京市典型流域生态健康调查与评估项目北京环境总体规划前期河流生境完整性研究项目丰台区重点河段水环境改善技术研究项目
【分类号】：X826

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