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| DOI | 10.1007/s11069-020-04269-1 |
| Long-term flood risk assessment of watersheds under climate change based on the game cross-efficiency DEA | |
| Su Q. | |
| 发表日期 | 2020 |
| ISSN | 0921030X |
| 起始页码 | 2213 |
| 结束页码 | 2237 |
| 卷号 | 104期号:3 |
| 英文摘要 | Climate change has significantly increased extreme precipitation and altered regional hydrological cycle, aggravating flood in the watershed. The effective measurement of the risk brought by climate change is an effective way to cope with flood hazard in the future. At the same time, the quality of the simulation of climate change scenarios will also affect the accuracy of flood risk assessment. Therefore, a comprehensive method is needed to measure the long-term disaster risk. However, the current method of subjectively assigning indicator weights is still subjective and difficult to be promoted and applied. So a new model for assessing watershed risk is constructed in this study. Based on the game cross-efficiency data envelopment analysis method and the combination of simulations of climate scenarios, the model can determine the input factors of the assessment and the influencing level of the input factors by using the Principal Component Analysis and Tobit model. The model comprehensively evaluates the flood risk level in the watershed with the results of the simulation of hazard in different climate scenarios, hazard exposure and social vulnerability as input factors, and the degree of disaster loss as the output factor. Results: (1) the hazard, exposure, and social vulnerability are spatially mismatched; (2) the overall risk in the watershed presents such a pattern: upstream (0.751) > downstream (0.418) > midstream (0.362); (3) the long-term flood hazard may be reduced under the influence of climate change. The research is helpful to formulate long-term flood mitigation strategies in the future. © 2020, Springer Nature B.V. |
| 关键词 | Climate scenario simulationData envelopment analysisFlood disasterRisk assessment |
| 英文关键词 | climate change; computer simulation; data envelopment analysis; flooding; natural disaster; principal component analysis; risk assessment; watershed; Indicator indicator |
| 语种 | 英语 |
| 来源期刊 | Natural Hazards
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/205952 |
| 作者单位 | Department of Urban Planning, National Cheng Kung University, Tainan City, 70101, Taiwan |
| 推荐引用方式 GB/T 7714 | Su Q.. Long-term flood risk assessment of watersheds under climate change based on the game cross-efficiency DEA[J],2020,104(3). |
| APA | Su Q..(2020).Long-term flood risk assessment of watersheds under climate change based on the game cross-efficiency DEA.Natural Hazards,104(3). |
| MLA | Su Q.."Long-term flood risk assessment of watersheds under climate change based on the game cross-efficiency DEA".Natural Hazards 104.3(2020). |
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