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| DOI | 10.3390/w16020205 |
| Changes in Population Exposure to Rainstorm Waterlogging for Different Return Periods in the Xiong'an New Area, China | |
| 发表日期 | 2024 |
| EISSN | 2073-4441 |
| 起始页码 | 16 |
| 结束页码 | 2 |
| 卷号 | 16期号:2 |
| 英文摘要 | In the context of global climate change and urban expansion, urban residents are encountering greater rainstorm waterlogging risk. Quantifying population exposure to rainstorms is an important component of rainstorm waterlogging risk assessments. This study utilized a two-dimensional hydrodynamic model to simulate the inundation water depth and inundation area resulting from rainstorms, with return periods of 5, 10, 50, and 100 years, in the Xiong'an New Area, and overlaid the gridded population data in 2017 and in 2035 under SSP2 to assess the change in population exposure. The results show that the average inundation depth and area increase were from 0.11 m and 207.9 km(2) to 0.18 m and 667.2 km(2) as the rainstorm return period increased from once in 5 years to once in 100 years. The greatest water depths in the main urban areas were mainly located in the low-lying areas along the Daqing River. The total population exposed to rainstorm waterlogging for the 5-, 10-, 50-, and 100-year return periods was 0.31, 0.37, 0.50, and 0.53 million, respectively, in 2017. However, this is projected to rise significantly by 2035 under SSP2, increasing 2-4-fold compared with that in 2017 for the four return periods. Specifically, the projected population exposure is expected to be 0.7, 1.0, 1.8, and 2.0 million, respectively. The longer the return period, the greater the increase in population exposure. The proportion of the population exposed at the 0.05-0.2 m water depth to the total population exposure decreases as the return periods increases, whereas the proportion changes in the opposite direction at the 0.2-0.6 m and >0.6 m depth intervals. Spatially, high-exposure areas are concentrated in densely populated main urban regions in the Xiong'an New Area. In the future, more attention should be paid to densely populated low-lying areas and extreme recurrence rainstorm events for urban flood-risk management to ensure population safety and sustainable urban development. |
| 英文关键词 | return periods; rainstorm waterlogging; population exposure; FloodArea model; Xiong'an New Area |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| WOS类目 | Environmental Sciences ; Water Resources |
| WOS记录号 | WOS:001152945900001 |
| 来源期刊 | WATER
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/305280 |
| 作者单位 | Nanjing University of Information Science & Technology |
| 推荐引用方式 GB/T 7714 | . Changes in Population Exposure to Rainstorm Waterlogging for Different Return Periods in the Xiong'an New Area, China[J],2024,16(2). |
| APA | (2024).Changes in Population Exposure to Rainstorm Waterlogging for Different Return Periods in the Xiong'an New Area, China.WATER,16(2). |
| MLA | "Changes in Population Exposure to Rainstorm Waterlogging for Different Return Periods in the Xiong'an New Area, China".WATER 16.2(2024). |
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