Spatial assessment of flow and benefit of tropical cyclone hazard mitigation service

文献类型： 外文期刊

第一作者： Zhao, Mingyue

作者： Zhao, Mingyue;Zhao, Mingyue;Peng, Jian;Wang, Yanglin;Zheng, Hua;Daily, Gretchen C.;Liu, Yuanxin;Wu, Jiansheng

作者机构：

关键词： Ecosystem service; tropical cyclone; natural hazard mitigation; nature-based solution; cascade model

期刊名称：PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT （ 影响因子：3.795； 五年影响因子：5.438 ）

ISSN： 0309-1333

年卷期：

页码：

收录情况： SCI

摘要： Ecosystems are employed to effectively protect people and communities in coastal areas from tropical cyclone (TC) hazards. Although a spatially explicit TC hazard mitigation service (TCHMS) is essential for devising adaptation strategy and resilience policy, the process and delivery of this program are unclear. We improved a capacity-exposure-demand conceptual framework using Guangdong Province, China, as a case study area, and spatial analysis was employed to assess the ecosystem service. Under this framework, we assessed "capacity" as the natural potential protection against TC hazards, "exposure" as the need for services, and "demand" as the estimated necessity of protecting coastal populations and economic interests. The analysis results were then used to map the TCHMS flow and benefit gap. The results showed that 21.6% of the whole province had low capacity, 25.3% had high exposure, and 19.3% had high demand. A significantly negative correlation was present between the TCHMS capacity and exposure, and a positive correlation was shown between the exposure and demand. In particular, the TCHMS flow and benefit were sufficient in inland areas but were severely deficient in coastal megacities. In Guangdong Province, the Pearl River Delta, and Chaoshan (CS), 3.3%, 4.0%, and 15.3% of the areas showed high demand-low capacity-high exposure patterns, respectively. Our findings will deepen the scientific understanding of the degree of protection a given ecosystem will provide to communities and infrastructures exposed to TC hazards and will thus provide scientific support for coastal ecosystem planning and management.

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