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| Fuzzy comprehensive evaluation of agricultural drought vulnerability |
| Kang Yonghui 1,2 , Xie Jiancang1 , Huang Weijun3 , Zhou Zuhao4 |
1. Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology,710048,Xi'an, China;
2. Guangxi Water Conservancy and Power Institute, 530023,Nanning,China;
3. Guangxi Hydraulic and Electric Vocational & Technical College, 530023,Nanning,China;
4. Water Resources Institute, China Institute of Water Resources and Hydropower Research, 100038,Beijing,China
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Abstract Studies show that the higher vulnerability degree of hazard-bearing body, the heavier the severity of drought, in the case of the same hazard factor; therefore, it is of great importance that the evaluation index and assessment model be selected scientifically and reasonably so that the drought vulnerability can be assessed objectively and truly. According to the mechanism of agricultural drought vulnerability, this study selected the agricultural drought vulnerability index under comprehensive consideration from the natural, social and economic aspects, established the agricultural drought vulnerability evaluation index system, taking Baise city area of Guangxi as an example. We analyzed and evaluated the agricultural drought vulnerability degree using fuzzy comprehensive evaluation method based on entropy, and obtained the comprehensive assessment results based on the principle of maximum membership degree. The results show that the agricultural drought vulnerability degree of Baise city area is serious, which is the combined effects of the laggard economic level, harsh natural environment and social factors of Baise. The results of agricultural drought vulnerability degree evaluation could provide reference for local governments to take targeted countermeasures to effectively relieve or reduce the agricultural drought vulnerability degree.
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Received: 07 July 2013
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