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[1]HAO Xiangyun,ZHU Zhongyuan,SONG Haiqing,et al.Temporal and Spatial Variations of Snow Cover and Its Impact on Runoff in Xilin River Basin[J].Research of Soil and Water Conservation,2017,24(06):360-365.

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Temporal and Spatial Variations of Snow Cover and Its Impact on Runoff in Xilin River Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 06 Page number: 360-365 Column: Public date: 2017-11-24

Title:: Temporal and Spatial Variations of Snow Cover and Its Impact on Runoff in Xilin River Basin

Author(s):: HAO Xiangyun¹, ZHU Zhongyuan¹, SONG Haiqing^1,2, XI Xiaokang¹; 1. College of Hydranlics and Civil Engineering, Inner Mongolia Agricultural, Hohhot 010018, China;
2. Inner Mongolia Autonomous Region Center for Ecology and Agrometeorology, Hohhot 010051, China

Keywords:: snowfall; spatial-temporal variation; MOD10A2; runoff

CLC:: P343.1

DOI:: -

Abstract:: The snowmelt runoff is an important water resource in the steppe basin in the cold and arid region. The melting of snow and ice has a significant influence on the runoff. We used daily runoff data from 2000 to 2013 for hydrological stations in the Xilin River Basin, average daily temperature, rainfall, snow depth data in Xilinhot Meteorological Station from 2000 to 2015 and MOD10A2 snow product data, to analyze the characteristics of snow cover and snow depth in the Xilin River Basin, the correlation between meteorological factors and snow cover, snow depth, and the influencing factors of runoff. The results show that the snow cover area and snow depth in the study area are single peaks, in winter, snow cover and snow depth all reached the maximum, followed by spring and autumn and minimum in summer. With respect to the interannual changes, the snow area, snow depth showed an overall increasing trend, in which the snow cover area of winter increased significantly. The correlation between the meteorological factors and snow cover in the study area shows that the main factors affecting the snow depth and snow cover are the temperature, wind speed and sunshine duration during the snow cover, in the snowmelt period, the temperature and precipitation are the main factors affecting snow depth and snow cover. The influence of air temperature on runoff is the most significant, and there is also a strong correlation between snow cover, snow depth and runoff, which indicates that the change of snow cover also affects the runoff. It is of great significance to study the dynamic change of snow cover and its influence on the runoff in the grassland drainage area of the cold and arid region, water resources management, agriculture and animal husbandry development and disaster prevention.

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