Environmental Impact of Manwan Hydropower Plant on River Ecosystem Service

摘要

Hydropower plant has exerted impacts on the surrounding ecosystem when generating electricity for human society. In this paper, we conducted an ecological economic evaluation of the Manwan Hydropower Plant in the middle reach of Lancang River and quantified the variation of river ecosystem service functions. As the humankind benefits from a multitude of resources and processes that are supplied by river ecosystem and vice versa, river ecosystem services can be divided into two main parts, i.e., services and products. The evaluation results show that hydropower construction has impaired the function of river ecosystem services based on the quantitative analysis of both positive effects and negative effects. An indicator system was also established to evaluate the effects of hydropower construction in terms of ecosystem service valuation methods.