State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Sci Total Environ. 2023 Jan 20;857(Pt 3):159549. doi: 10.1016/j.scitotenv.2022.159549. Epub 2022 Oct 18.
Freshwater ecosystem services are the link between ecological systems and social systems, which is an important guarantee of the freshwater safety particularly in dryland regions. However, more quantitative research has been based on the freshwater ecosystem services of static situations, and less on the flow conditions. We established a comprehensive modeling framework for the analysis of water security pattern based on the physical flow (PF) and ecosystem service flow (ESF) of freshwater. The results for Yellow River Basin showed that the water-scarce area have reduced in the past two decades. The PF of freshwater relieves water stress on an average of 52.1 % of the static water in scarce areas per year. The problem in water-deficient areas meanly lies on the water supply side. These results highlight the importance of PF from the upstream to downstream, which is critical for formulating sustainable management strategies in safeguarding long-term regional freshwater resource security.
淡水生态系统服务是生态系统和社会系统之间的联系，是保障特别是旱地地区淡水安全的重要因素。然而，更多的定量研究基于淡水生态系统服务的静态情况，而对流动条件的研究较少。我们建立了一个综合的建模框架，用于分析基于淡水物理流 (PF) 和生态系统服务流 (ESF) 的水安全格局。对黄河流域的研究结果表明，在过去二十年中，缺水地区的面积有所减少。淡水的 PF 平均每年缓解了稀缺地区静态水的 52.1%的用水压力。缺水地区的问题主要在于供水方面。这些结果突出了从上游到下游的 PF 的重要性，这对于制定可持续的管理策略以保障长期区域淡水资源安全至关重要。
