水库运行对生源要素生物地化过程的影响及生态效应

Effect of Reservoir Operation on Biogeochemical Progersses of Biogenic Element and the Ecological Effects

水库运行引起的生态环境问题一直是研究的热点。近年来,全球范围内成千上万座大坝正在建设或处于规划设计阶段,水库运行引起的生态环境问题受到更加广泛的关注。其中,对生源要素生物地化过程的影响及其生态效应是一个重要方面,且库区富营养化及温室气体排放等环境问题突出。主要从温室气体排放和营养盐滞留2个方面分别来阐述水库运行对C,N,P和Si等生源要素的影响和生态效应,并根据国内外研究现状,提出可供进一步研究的相关热点问题。

Ecological and environmental problems caused by operation of the reservoir have been a hot topic. In recent years,thousands of worldwide dams are under construction or in the planning and design stage, and ecological environment issues caused by reservoir operation are more widely concerned. Among them, the impact of biogenic elements biogeochemical processes and their ecological effects were within an important aspect. And the eutrophication and greenhouse gas emissions of reservoir area are two big environmental problems. In this article, the influence of reservoir operation and ecological effects on biogenic elements C, N, P, and Si are illustrated from two aspects of the greenhouse gas emissions and nutrient retention. And relevant hot issues for further study are put forward according to current research.