| 2013年中国南方农业旱灾风险形成机理研究——以湖南省衡阳市为例 |
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| 引用本文： | 刘兰芳,陈涛,肖志成,谭青山,金菊良,周松秀.2013年中国南方农业旱灾风险形成机理研究——以湖南省衡阳市为例[J].衡阳师范学院学报,2014(3):49-53. |
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| 作者姓名： | 刘兰芳 陈涛 肖志成 谭青山 金菊良 周松秀 |
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| 作者单位： | [1]衡阳师范学院资源环境与旅游管理系,湖南衡阳421002 [2]湖南衡阳市气象局,湖南衡阳421001 [3]合肥工业大学水资源与环境工程研究所,安徽合肥230009 |
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| 基金项目： | 国家自然科学基金资助项目（41171075,71273081）;湖南省科技厅计划资助项目（2012FJ3019）;湖南省高校科技创新团队支持计划资助项目;湖南省重点学科人文地理支持项目 |
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| 摘 要： | 旱灾一直影响中国农业可持续发展,抗旱减灾是我国粮食安全的重要保证。近几十年来,中国南方旱灾风险性有增强趋势,探究中国南方旱灾形成机理对农业防旱减灾具有重要的理论意义。以2013年衡阳市旱灾为案例,从致灾因子、孕灾环境与应急管理等方面综合分析了旱灾风险性形成机理。利用CI指数法,对2013年衡阳市干旱过程进行了诊断,并计算了7个县域干旱危险度。结果表明,衡阳县干旱日数最大,达150d,常宁市干旱日数最小,为98d。干旱危险度最高是衡南县,衡阳县次之。这种干旱危险性的区域差异,使得衡南县、衡阳县、祁东县成为旱灾高风险区,而常宁市、耒阳市为旱灾低风险区。水利设施不足,抗旱措施不得力,强化了旱灾风险性及其区域差异。
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| 关 键 词： | 南方干旱 旱灾风险 旱灾形成机理 |
On Formation Mechanism of Agricultural Drought Risk in Southern China in 2013 -A Case Study of Hengyang City in Hunan Province |
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| LIU Lan- fang,CHEN Tao,XIAO Zhi-cheng,TAN Qing-shan,J IN Ju-liang,ZHOU Song-xiu.On Formation Mechanism of Agricultural Drought Risk in Southern China in 2013 -A Case Study of Hengyang City in Hunan Province[J].journal of Hengyang Normal University,2014(3):49-53. |
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| Authors: | LIU Lan- fang CHEN Tao XIAO Zhi-cheng TAN Qing-shan J IN Ju-liang ZHOU Song-xiu |
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| Institution: | 1. Dept. of Resources Environment and Tourism Management, Hengyang Normal University, Hengyang Hunan 421002, China; 2. Hengyang Meteorological Bureau, Hengyang Hunan 421001 ,China; 3. Institute of Water Resources and Environmental Systems Engineering, Hefei University of Technology, Hefei Anhui 230009, China) |
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| Abstract: | Drought is a limiting factor of agricultural sustainable development in China. Against the drought and disaster mitigation is an important guarantee of food security in our country. In recent decades, the drought risk in southern China is inclined to strength, so study about formation mechanism of the drought in southern China has important theoretical significance to control drought. With the examples of drought in Hengyang in 2013, the forming mechanism of drought risk was analyzed comprehensively from disaste-deducing factors environment of developing drought hazards and emergency management. The drought process diagnosis and drought hazard were studied by CI in Hengyang in 2013. The results show that the maximum number of drought days in Hengyang County, up to 150 days, the minimum number of drought days in Changning City, up to 98 days. The drought risk degree was the highest in Hengnan County and the drought risk degree in Hengyang County came the second. Research showed that Hengnan County, Hengyang County, Qidong County were the high risk area and Changning City, l.eiyang City were low risk region. Lack of water conservancy facilities and negative measure of against the drought underscored the drought risk and its regional differences. |
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| Keywords: | drought in southern China drought risk formation mechanism of drought risk |
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