| 黄淮海平原及其附近地区干旱时空动态格局分析——基于标准化降雨指数 |
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| 引用本文： | 赵林,武建军,吕爱锋,刘晓晨,刘明.黄淮海平原及其附近地区干旱时空动态格局分析——基于标准化降雨指数[J].资源科学,2011,33(3):468-476. |
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| 作者姓名： | 赵林 武建军 吕爱锋 刘晓晨 刘明 |
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| 作者单位： | 1. 北京师范大学地表过程与资源生态国家重点实验室,北京100875;北京师范大学民政部/教育部减灾与应急管理研究院,北京100875;北京师范大学环境演变与自然灾害教育部重点实验室,北京100875
2. 中国科学院地理科学与资源研究所,北京,100101 |
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| 基金项目： | 国家自然科学基金项目(编号：NSFC40601091,NSFC40801216)；国家科技支撑计划项目(编号：2006BAC18B06)。 |
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| 摘 要： | 本文根据中国气候区划图将黄淮海及其附近地区划分为4个气候子区域,利用该区域气象站点1961年-2008年的降水数据计算出子区内各站点的不同时间尺度的标准化降雨指数(Standardized Precipitation Index,简称SPI);通过各子区站点的SPI差异分析了研究区内发生干旱的时空差异及其动态格局。结果表明:在3个月尺度上,A区、B区发生严重、极端干旱的频率较高,然而整个研究区发生总体干旱的频率没有明显区别;在6个月尺度上,A区、B区发生干旱的频率较高,C区、D区发生极端干旱的频率较低,其中安徽北部和河南东部地区发生严重等级干旱的频率较高;在12个月尺度上,A区、B区发生总体干旱的频率较高,C区、D区发生严重干旱和极端干旱的频率较高;就季节性干旱而言,在3个月尺度上,4个子区域发生各等级干旱的频率也存在较大差别。此外,从12个月尺度SPI值时间序列变化趋势来看,1962年-2008年全区干旱有轻微加重的趋势,且整个研究区及其各子区域干旱变化趋势处于波动中,全区20世纪60年代和90年代有明显加重趋势,70、80年代以及2000年以来有减缓的趋势。
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| 关 键 词： | 干旱 黄淮海地区 SPI 时空格局 |
Spatial and Temporal Analysis of Drought over the Huang-Huai-Hai Plain and Its Surroundings Based on the Standardized Precipitation Index |
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| ZHAO Lin,WU Jianjun,L Aifen,LIU Xiaochen,LIU Ming.Spatial and Temporal Analysis of Drought over the Huang-Huai-Hai Plain and Its Surroundings Based on the Standardized Precipitation Index[J].Resources Science,2011,33(3):468-476. |
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| Authors: | ZHAO Lin WU Jianjun L Aifen LIU Xiaochen LIU Ming |
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| Institution: | State Key Laboratory of Earth Surface Processes and Resources Ecology, Beijing Normal University, Beijing 100875, China; Academy of Disaster Reduction and Emergency Management MCA & MOE, Beijing Normal University, Beijing 100875, China; Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Earth Surface Processes and Resources Ecology, Beijing Normal University, Beijing 100875, China; Academy of Disaster Reduction and Emergency Management MCA & MOE, Beijing Normal University, Beijing 100875, China; Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University, Beijing 100875, China;Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;State Key Laboratory of Earth Surface Processes and Resources Ecology, Beijing Normal University, Beijing 100875, China; Academy of Disaster Reduction and Emergency Management MCA & MOE, Beijing Normal University, Beijing 100875, China; Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Earth Surface Processes and Resources Ecology, Beijing Normal University, Beijing 100875, China; Academy of Disaster Reduction and Emergency Management MCA & MOE, Beijing Normal University, Beijing 100875, China; Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Drought, one of the most severe hazards resulting in significant economic loses in agriculture and industry, is a natural phenomenon caused by the imbalance between import and demand for moisture. In the context of global climate change, the drought intensity, frequency, and its spatial patterns have been changing. An accurate understanding of these changing processes would be greatly useful in identifying regional climate change, regional drought forecasting, managing droughts, and ultimately restraining t... |
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| Keywords: | Drought Huang-Huai-Hai Plain SPI Spatial and temporal patterns |
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