| Comprehensive risk management strategy for agricultural drought disaster in Dashishan region of Guangxi |
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| DOI：10.7606/j.issn.1000-7601.2012.03.45 |
| Key Words: drought disaster risk assessment risk probability comprehensive risk management |
| Author Name | Affiliation | | YANG Yunchuan | Institute of Mountain Hazards and Environment, CAS, Chengdu, Sichuan 610041, China
Graduate University of CAS, Beijing 100049, China | | XIAO Feipeng | Guangxi Hydraulic and Electric Polytechnic College, Nanning, Guangxi 530023, China | | CHENG Genwei | Institute of Mountain Hazards and Environment, CAS, Chengdu, Sichuan 610041, China | | CHEN Yundong | Departmeni of Water Resources of Guangxi, Nanning, Guangxi 530023, China | | KANG Yonghui | Guangxi Institute of Water Conservaucy and Hydropowes Design, Nanning, Guongxi 530023, China | | SHI LIU Hongxing | Guangxi Hydraulic and Electric Polytechnic College, Nanning, Guangxi 530023, China |
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| Abstract: |
| Along with the transformation of drought disaster management in China from a crisis mode to a compre-hensive risk model. With the karst area of Dashishan region in Guangxi as research area, investigation and analysis of a-gricultural drought disaster were made in this region during last 20 years, and diffusion method of fuzzy information was adopted to calculate and study agricultural drought disaster risk assessment. The results indicate that agricultural drought disaster occurs once every 2 years in last 20 years, and the intensity increased
gradually. With respect to drought levels of extreme, severe,
moderate and slight, the frequency is averagely 1.3, 2.2, 6.3 and 15.3 years every one time re-spectively. According to the regional drought disaster risk model:DR=(H×E×V)/C, strengthening the capability of drought mitigation is the most effective way and means to cope and mitigate the drought disaster and risk. Overall, pre-vention
and response capability of the drought disaster lags far behind to meet the objective of integrated risk manage-ment. Therefore, developing the operable Drought Prevention and Preparation System will effectively promote the strategy implementation of integrated risk management. |
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