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[1]XI Xiaokang,ZHU Zhongyuan,SONG Xiaoyuan,et al.Time Variation Characteristics and Genetic Analysis of Snowmelt Runoff in Xilin River Basin[J].Research of Soil and Water Conservation,2016,23(06):150-153,159.

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Time Variation Characteristics and Genetic Analysis of Snowmelt Runoff in Xilin River Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 06 Page number: 150-153,159 Column: Public date: 2016-12-28

Title:: Time Variation Characteristics and Genetic Analysis of Snowmelt Runoff in Xilin River Basin

Author(s):: XI Xiaokang, ZHU Zhongyuan, SONG Xiaoyuan, JIAO Wei, SUI Jiashuo; College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China

Keywords:: the upstream of Xilin River Reservoir; the time of snowmelt runoff; runoff

CLC:: P343.1

DOI:: -

Abstract:: Snowmelt runoff is an important supply and source of water of cold and arid regions. The snow melting runoff time will change with the variation of the meteorological conditions, which seriously affect the distribution of annual and seasonal runoffs of the study area. The Timing of the Center (CT) of Mass of Flow of Xilin River Hydrological Station 1960-2009 hydrological year was used to represent the snowmelt runoff start in the upstream of Xilin River Reservoir and analyze the time characteristics of snowmelt runoff. The results showed that the time of snowmelt runoff has earlier trend for Xilin River Hydrological Station, and snowmelt runoff occurred in late March and early April, at the Xilinhot Weather Station, temperature during the snow melting period (March to April) or precipitation during the snow period (last year in October to the April of this year) increased, the time of snowmelt runoff will be ahead, but the effect of the temperature on the time of the snow melting was more obvious. By Pearson correlation coefficients between CT and annual and seasonal runoffs, if the time of snowmelt runoff is in advance, the annual runoff, winter, summer, and autumn runoff will decrease, and spring runoff will increase, but Pearson correlation coefficients between CT and annual runoff, summer and autumn runoff is most closely, correlation coefficient is 0.456,0.600,0.676, respectively, which provided an important support in rational use of snow water resources and flood warning in the cold and arid regions prairie watershed.

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