17:15 〜 18:45
[AHW20-P05] Assessing the benefits of Nature-based Solutions with in-situ flood detention in You-Cai village under climate change by using SOBEK simulation
キーワード：Climate change, Nature-based Solutions, In-situ flood detention, SOBEK
Due to continuous global warming, rainfall patterns have changed. In order to mitigate the impact of climate change, natural-based solutions are gradually being developed internationally. For reducing the risk of extreme rainfall, the Taiwan government has put forward the idea of in-situ flood detention, using raised ridges or height of roads next to farmland creating detention ponds as a temporary storage space for rainwater. This measure reduces engineering works as well as maintains land productivity, and the farmland can bear and absorb floodwater. In this study, Youcai Village, Baozhong Township, Yunlin County, an in-situ flood detention demonstration area, was used as a research area, and we used the rainfall change rate of the IPCC Fifth Assessment Report (AR5) RCP4.5 published by the Taiwan Climate Change Projection Information and Adaptation Knowledge Platform (TCCIP) to estimate the rainfall in each recurrence interval in the study area in the middle of the century (2036~2065). SOBEK software was employed for flooding simulation, and the effectiveness and sustainability of in-situ flood detention in this century from the results were discussed.