State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China.
Environ Sci Pollut Res Int. 2020 Jul;27(21):26570-26578. doi: 10.1007/s11356-020-08963-2. Epub 2020 May 5.
Climate change and human activities are affecting the ecological health of rivers and the economic value of its ecosystem services. Taking water quantity as the intermediate variable, we proposed a quantitative calculation method for the impact of climate change and human activities on the economic value produced by the ecosystem service functions of rivers. The framework mainly consists of three steps: firstly, we quantitatively determined the changes in the amount of water coming from rivers due to climate change and human activities; secondly, combining the theory of resource and environmental economics to calculate the economic value generated by ecological service functions of rivers; finally, we quantitatively identified and analyzed the impact of climate change and human activities on the economic value produced by the ecosystem service functions of rivers. Taking Baoji section of Weihe River (BSWR) as an example, we quantitatively analyzed and calculated the impact of climate change and human activities on the economic value produced by ecosystem service functions of rivers. The main conclusions of this paper are as follows: in recent 52 years, the economic value produced by the ecosystem service functions of rivers decreased by 3.57 billion yuan due to the climate change and human activities; the total economic value has been reduced by an average of 68 million yuan per year. This useful work can not only reveal the impact of climate change and human activities on the economic value of ecosystem services of rivers but also can provide an important basis for the reasonable management model of water resource of ecosystem of rivers watershed.
气候变化和人类活动正在影响河流的生态健康及其生态系统服务的经济价值。我们以水量为中间变量，提出了一种定量计算气候变化和人类活动对河流生态系统服务功能产生的经济价值的影响的方法。该框架主要包括三个步骤：首先，我们定量确定了由于气候变化和人类活动导致的河流水量变化；其次，结合资源与环境经济学理论，计算了河流生态服务功能产生的经济价值；最后，我们定量识别和分析了气候变化和人类活动对河流生态系统服务功能产生的经济价值的影响。以渭河宝鸡段（BSWR）为例，我们对气候变化和人类活动对河流生态系统服务功能产生的经济价值的影响进行了定量分析和计算。本文的主要结论如下：在过去的 52 年中，由于气候变化和人类活动，河流生态系统服务功能产生的经济价值减少了 35.7 亿元；总经济价值平均每年减少 6800 万元。这项有益的工作不仅可以揭示气候变化和人类活动对河流生态系统服务经济价值的影响，还可以为河流流域生态系统水资源的合理管理模式提供重要依据。
