河道生态基流价值的估算与比较

Estimation and comparison of ecological basic flow value

为解决目前对河道生态基流价值的认识不足、计算方法缺乏的问题,以渭河宝鸡段生态基流价值为研究对象,借鉴资源环境经济学理论,应用机会成本法、分析综合法、影子工程法分别估算河道生态基流的机会价值、功能价值以及生态基流得不到保障时所造成的最小经济损失。结果表明:渭河宝鸡段生态基流的机会价值约为7.06亿元/a,功能价值约为11.72亿元/a,河道生态基流得不到保障时所造成的最小经济损失约为10.27亿元/a。因此在水资源开发利用时,应对生态基流予以重视。

In order to resolve the insufficient understanding and the lack of methods for studyingriver ecological base flow value, taking Baoji Weihe River section as the study area and referencingresources and environment economics theory, using opportunity cost method, analysis synthesismethod and shadow engineering method to estimate the opportunity value, functional valueand the minimum economic losses caused by ecological base flow not guaranteed separately. Theresults show that the opportunity value of Baoji Weihe River section is about 0. 706 billionyuan/a , that function value is about 1. 172 billion yuan/a and that the minimum economic lossescaused by ecological base flow unguaranteed is about 1. 027 billion yuan/a. So what is needed isto attach importance to ecological base flow when water resources are exploited.