Estimation of water provision service for monsoon catchments of South China: Applicability of the InVEST model

Estimation of water provision service for monsoon catchments of South China: Applicability of the InVEST model
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华南季风流域供水服务估算:InVEST 模型的适用性

DOI:
10.1016/j.landurbplan.2018.10.011
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发表时间:
2019-02
影响因子:
9.1
通讯作者:
Xu Xianli
Xu Xianli
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Yang Dong;Liu Wen;Tang Lingying;Chen Le;Li Xuezhang;Xu Xianli

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随着人们认识到生态系统服务对社会的价值,管理生态系统服务的努力有所增加。生态系统服务和权衡综合评估(InVEST)模型是帮助管理生态系统服务的一种工具,这是一种新的但功能强大的生态系统服务模型。然而,InVEST模型仍然需要在不同的地理区域进行测试。本研究评估了InVEST产水量模型在中国南方一个典型的东亚季风流域的性能。敏感性分析表明,降水量是最敏感的因素影响的水量相比,其他两个重要的变量:ET0(参考蒸散量)和Z(气候季节性因素)。特别是对于一些东南子流域,从2005年到2015年,降水量增加了46%,导致水量增加了约138%。当Z参数用可用的观测数据(R2= 0.92)校准或从全球可用的ω(R2= 0.92)推断时,该模型表现良好,ω是表征集水区地表特性的关键参数。本研究将为其他使用者在东亚季风流域应用InVEST模型和生态系统服务管理提供参考。
With recognizing the value of ecosystem services to society, the efforts to manage ecosystem services have increased. One such tool to help manage ecosystem services is the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model, a new but powerful ecosystem service model. However, the InVEST model still requires testing in various geographic regions. This study assessed the performance of the InVEST water yield model in a typical East Asian monsoon catchment of South China. A sensitivity analysis shows that precipitation is the most sensitive factor affecting water yield compared with two other important variables: ET0(reference evapotranspiration) and Z (climate seasonality factor). Especially for some southeast sub-watersheds, a 46% increase in precipitation from 2005 to 2015 resulted in an approximately 138% increase in water yield. The model performed well when the Z parameter was calibrated with available observed data (R2= 0.92) or inferred from the globally available ω (R2= 0.92) which is a key parameter that characterizes the land surface properties of catchments. This study will be helpful to other users who employ InVEST model and ecosystem services management in East Asian monsoon catchments.
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