太子河本溪城区段河流水生态系统问题诊断与修复方案研究

发布时间：2018-10-11 13:30

【摘要】：太子河是大辽河的主要支流,属于典型的北方山区型河流。近年来,随着城镇化进程的加速,水生态环境受到一定的污染,特别是太子河本溪城区段,由于修建水坝、河道挖沙、污水排放、改造河岸带等因素的影响,导致了一系列的水生态问题,河流生境退化明显。开展太子河本溪城区段河流水生态系统问题诊断及生态修复研究,可以为该河段河流水质提升与生境改善提供指导。因此,具有一定的现实意义。本文通过对太子河本溪城区段河流水质、水生植物、底栖动物和鱼类的考查与分析,探明了太子河本溪城区段水体水质状况及水生生物多样性的分布情况,明确了太子河本溪城区段水生态问题:河流水质水量不稳、水质考核断面氨氮、总氮偏高;污染源排放增加;底质及河岸深度破坏、生物多样性低,河流自净能力弱。太子河本溪城区段健康评价结果表明:太子河本溪城区段水生态系统健康状况较差,水生态系统退化,亟需进行水生态系统修复。在上述研究基础上,参考国内外关于水体修复的技术手段,结合太子河本溪城区段的实际状况,提出了针对本溪太子河城区段示范区域的河流水生态系统修复方案。从而为太子河本溪城区段河流水生态系统恢复提供技术支持,并可以为国内同类河流的生态修复提供参考。
[Abstract]:The princeling River is the main tributary of the Great Liaohe River, which belongs to the typical northern mountainous river. In recent years, with the acceleration of urbanization, the water ecological environment has been polluted to a certain extent, especially due to the construction of dams, river dredging, sewage discharge, and the reconstruction of riparian zones, etc. It leads to a series of water ecological problems, and the degradation of river habitat is obvious. The study of water ecosystem diagnosis and ecological restoration in Benxi section of Taizi River can provide guidance for the improvement of water quality and habitat. Therefore, has certain realistic significance. Based on the investigation and analysis of water quality, aquatic plants, benthic fauna and fish in Benxi section of Taizi River, the water quality and the distribution of aquatic biodiversity in Benxi section of Taizi River were studied. The problems of water ecology in Benxi section of Taizi River are defined as follows: water quality and quantity of river is unstable, ammonia nitrogen and total nitrogen are on the high side in water quality assessment section; discharge of pollution source is increased; depth damage of bottom and riverbank is destroyed, biodiversity is low, and self-purification ability of river is weak. The results of health evaluation in Benxi section of Taizi River show that the water ecosystem health is poor and the water ecosystem is degraded, so it is urgent to repair the water ecosystem. On the basis of the above research, referring to the technical means of water body restoration at home and abroad, combined with the actual situation of Benxi section of Taizi River, this paper puts forward a scheme for the restoration of river water ecosystem in the demonstration area of Benxingzi River section in Benxi River. Therefore, it can provide technical support for the restoration of river water ecosystem in Benxi section of Taizi River, and can provide reference for the ecological restoration of similar rivers in China.
【学位授予单位】：辽宁大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV213.4;X171.4

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