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[1]KUANG Mei-juan,XIE Hong-xia,SUI Bing,et al.Analysis on Spatiotemporal Characteristics of Precipitation in Hu’nan Province from 1961 to 2010[J].Research of Soil and Water Conservation,2013,20(05):145-149.

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Analysis on Spatiotemporal Characteristics of Precipitation in Hu’nan Province from 1961 to 2010

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 05 Page number: 145-149 Column: Public date: 2013-10-28

Title:: Analysis on Spatiotemporal Characteristics of Precipitation in Hu’nan Province from 1961 to 2010

Author(s):: KUANG Mei-juan¹, XIE Hong-xia¹, SUI Bing², WANG Cui-hong¹, SONG Di-si³, LI Da³; 1. College of Resources and Environment, Hu’nan Agricultural University, Changsha 410128, China;
2. Hu’nan Meteorological Institute, Changsha 410007, China;
3. Orient Science & Technology College, Hu’nan Agricultural University, Changsha 410128, China

Keywords:: precipitation characteristics; intra-annual variation; inter-annual variation; Hu’nan Province

CLC:: P468.0⁺24

DOI:: -

Abstract:: Based on the daily rainfall data at 21 stations in Hunan Province, the spatiotemporal features of annual, seasonal and monthly rainfall in the period of 1961 to 2010 were analyzed in order to provide data support for sustainable use of water resource and flood controlling. The results were as follows: The rainfall in Hu’nan Province mainly occurred from April to August, which accounted for 63.09% of total precipitation of the whole year. Rainfall in spring and summer occupied 36% and 35% of the annual precipitation while 17% and 12% in autumn and winter. The maximum value of annual precipitation was up to 1 964.95 mm and the minimum value was only 1 104.19 mm. The average rainfall of every decade was closely and the decade precipitation from 1960 to 2010 was between 1 354.00 mm and 1 513.08 mm. The average amount of rainstorm precipitation was 305.75 mm occurring mainly from May to August from 1961 to 2010, and the average event frequence of torrential rain was 4.1 every year. The maximum value of annual torrential rain was up to 572.07 mm and the minimum value is only 150.12 mm. Results showed that the distributions of rainfall and heavy rainfall during the year in Hu’nan Province were largely different and seasonal characters of precipitation and torrential rain were obvious. In additon, the differences among inter-annual precipitation and heavy rainfall were great. It was necessary to make use of water resources suitably and to take practice against flood according to the spatiotemporal characteristics of rainfall.

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