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Qu Y.,China Institute of Water Resources and Hydropower Research | Qu Y.,Research Center on Flood and Drought Disaster Reduction | Li J.,Chinese Ministry of Water Resources | Lyu J.,China Institute of Water Resources and Hydropower Research | And 5 more authors.
Shuikexue Jinzhan/Advances in Water Science | Year: 2014

As the key content and core element identified in the practice of drought disaster risk management, it has become a hot-button issue on how to properly assess the drought disaster risk in the field of both science and technology. Starting with reviewing the definition of drought disaster risk concept in the scientific community, the differences between the concepts of the drought risk and the drought disaster risk are made clear in this study. The mechanism of drought disaster risk formation is then investigated and elaborated. A quantitative framework for assessing drought disaster risk is first proposed, this is achieved by establishing the quantitative relationship among three important parameters: the drought frequency, the potential loss and the drought resistance capacity. The key techniques used in the framework are highlighted and discussed, which include the drought frequency analysis, the drought disaster loss assessment, the drought resistance capacity assessment, and the drought disaster risk characterization. The active issues and difficulties related to the techniques are also respectively addressed. Source


Qu Y.,China Institute of Water Resources and Hydropower Research | Qu Y.,Research Center on Flood and Drought Disaster Reduction | Gao H.,China Institute of Water Resources and Hydropower Research | Gao H.,Research Center on Flood and Drought Disaster Reduction | And 7 more authors.
Shuili Xuebao/Journal of Hydraulic Engineering | Year: 2015

As the core content and key element identified in the practice of drought risk management, it has become a hot-button issue on how to properly assess the drought risk in the research field. To promote the scientific and technological process of drought management, the principle of drought risk assessement ased on the regional disaster system theory has been clarified, and the risk of agricultural drought disaster in the whole country has been evaluated with the fuzzy evaluation method. The results show that the drought hazard and exposure exhibits obvious regional pattern. The drought hazard in Northwest is the biggest, followed by the North China Plain, Northeast, the lower reach of YangtzeRiver, Southwest and South China. Compared with other areas, the drought exposure in North China Plain, the lower reach of Yangtze River and Northeast, are relatively higher. The prefecture-level cities located in the second terrace are more vulnerable to agricultural drought. Generally speaking, the agricultural drought risk is higher in north than in the south, and risk in mid-eastern China is higher than in thewest. The agricultural drought risk in Northeast, North China Plain, eastern part of Northwest and northern part of the lower reach of Yangtze river are relatively higher. ©, 2015, Shuili Xuebao/Journal of Hydraulic Engineering. All right reserved. Source

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