大坝对河流服务功能影响的价值评估方法

Value evaluation of the effects of a dam on river ecosystem services

在已有的研究基础上结合我国现有水电开发对河流生态系统服务功能影响的评价方法,提出了河流生态系统的5种主要生态服务功能:提供产品功能、支持功能、管理及保障功能、调节功能和文化娱乐功能,并采用流量的估算方法、影子价格法和恢复费用法计算了5种主要生态服务功能的价值,找出建坝后大坝每年可能涉及到的效益和损失,为现有大坝可持续管理、生态、经济和环境评价提供依据.

On the basis of present researches in the world and combining China current evaluation methods for river ecosystem srevices brought by hydropower development, five kinds of river ecosystem services have been established including products providing, support function, management and indemnification function, regulation function and cultural entertainment function. Through using method of calculating ＂flow＂, shadow price method and replacement cost method, five kinds of evaluation methods on river ecosystem services are put forward. As a result, the annual benefit and loss related to dam can be calculated which provides evidence for dam sustainable management, ecological, economic and environmental assessment in the future.