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使用基于自然的解决方案进行河流洪水适应:对水气风险进行全面有效的评估
Kuo-Wei Liao1, John Thedy2, Chun-Che Tai2
1Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan.
The Science of the total environment
|December 15, 2023
概括
基于自然的解决方案 (NbS) 有效地降低了水文气象风险,农业洪水减少了46.03%. 这些解决方案比传统的灾害风险降低 (DRR) 工程策略提供了更大的经济效益.
科学领域:
- 环境工程 环境工程
- 水资源管理 水资源管理
- 生态系统服务生态系统服务
背景情况:
- 越来越多的人对减少灾害风险 (DRR) 的基于自然的解决方案 (NbS) 感兴趣.
- 需要标准化,可量化的方法来评估工程中的NbS风险减轻.
- 水文气象风险构成重大威胁,需要有效的解决方案.
研究的目的:
- 建立一个全面的框架来评估工程中NbS减轻的水文气象风险.
- 整合洪水灾害机制,不确定性和生态系统服务,以进行全面的NbS利益评估.
- 使用先进的分析方法,为NbS开发防洪标准.
主要方法:
- 开发了一个整合二维液压分析和基于Kriging的可靠性分析的框架.
- 利用InVEST工具包来评估NbS提供的生态系统服务.
- 作为一个案例研究,将框架应用于台湾的利河流域.
主要成果:
- NbS证明了对25年回归期洪水的有效性,减少了46.03%的农田洪水.
- 对于20年回报期的洪水,洪水发生的概率从100%降至27%.
- 与传统的工程治理相比,NbS在总收益价值上提供了 NT $ 1.20-4.65 万.
结论:
- 拟议的框架为评估NbS风险减缓提供了一种可量化的标准化方法.
- 对于DRR而言,NbS是传统工程的可行和经济有益的替代方案.
- 该研究强调了NbS在提高对水文气象灾害的抵御能力方面的重要作用.
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