流域水利水电开发环境影响回顾性评价案例分析

A Case Study of Retrospective Assessment on Environmental Impacts of Basin Water Conservancy and Hydropower Development

流域环境影响回顾性调查分析是流域规划环境影响评价基础性工作。由于流域水利水电开发规划环境影响回顾性评价技术指导文件尚未出台,为此参考流域规划环境影响评价规范性文件,以南江流域为例,调查分析流域内已建水利水电工程建设对水环境、陆生生态、水生生态的影响,提出了已建工程运行期环境保护措施的不足。根据南江流域规划的水利水电工程,结合全流域的生态环境保护要求提出环境保护措施总体规划方案,为流域水利水电工程后续开发提供多方面的决策参考。

Basin environmental retrospective investigation and analysis is the basic work of river basin planning environmental impact assessment. Due to the lack of technical guidance documents about retrospective assessment on planning environmental impacts of water conservancy and hydropower development, the normative documents of planning environmental impacts on basin scale are taken as references. Taking Nanjiang River Basin as an example, the influences of water conservancy and hydropower projects on water environment, aquatic ecology and terrestrial ecological are investigated and analyzed. On the basis of these analyses, the deficiency of current environmental protection measures for the projects under operation is realized. Based on the planning of water conservancy and hydropower project development in Nanjiang River Basin, the general plan for environmental protection measures is put forward which takes ecological environment protection requirements of entire basin into consideration. The results will provide reference for the decision-making on subsequent water conservancy and hydropower project development.