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《Water Resources and Hydropower Engineering》 2012-04
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SPI based analysis on evolvement feature of drought in Huaihe River Basin

ZHENG Xiaodong1,2,LU Fan1,MA JING1,3,LI Yanjun2 (1.Water Resources Department,China Institute of Water Resources and Hydropower Research,Beijing 100038,China; 2.Hebei University of Engineering,Handan 056038,Hebei,China;3.School of Urban Planning and Environmental Science,Liaoning Normal University,Dalian 116029,Liaoning,China)  
Based on the precipitation data from 35 meteorological stations in Huaihe River Basin,the annual drought index of nearly 50 years(1961~2010)is analyzed herein with the standardized precipitation index(SPI),and then the evolvement feature of drought in the basin are also analyzed with three drought indexes,i.e.drought frequency,ratio of stations with drought and drought intensity.The study result shows that Huaihe River Basin is mainly dominated by light drought and medium drought within a period of nearly 50 years,while severe drought and extreme drought are relatively rare therein along with a trend of that drought covered area decreases,however,the drought intensity increases year by year.Under the current status of the climate change,there is a tendency of the decrease of the unfavourable impact from drought on the agricultural production in Huaihe River Basin.
【Fund】: 国家自然科学基金项目(51109224);; 国家重点基础研究发展计划(973计划)(2010CB951102);; 中国水科院科研专项项目(资集1001)
【CateGory Index】: S423
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