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[1]XI Axing,LIU Zhihui,LU Wenjun.Processes of Seasonal Frozen Soil Freezing-thawing and Impact on Snowmelt Runoff in Arid Area[J].Research of Soil and Water Conservation,2016,23(02):333-339.

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Processes of Seasonal Frozen Soil Freezing-thawing and Impact on Snowmelt Runoff in Arid Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 02 Page number: 333-339 Column: Public date: 2016-04-28

Title:: Processes of Seasonal Frozen Soil Freezing-thawing and Impact on Snowmelt Runoff in Arid Area

Author(s):: XI Axing^1,2, LIU Zhihui^1,2,3,4, LU Wenjun^1,2; 1. School of Resources and Environment Science, Xinjiang University, Urumqi 830046, China;
2. Key Laboratory of Oasis Ecology, Ministry of Education, Xinjiang University, Urumqi 830046, China;
3. Institute of Ecology and Environment, Xinjiang University, Urumqi 830046, China;
4. International Center for Desert Affairs-Research on Sustainable Development in Arid and Semi-arid Lands, Urumqi 830046, China

Keywords:: seasonal frozen soil; freezing-thawing process; migration of soil moisture; snowmelt runoff

CLC:: P642.14

DOI:: -

Abstract:: The freezing thawing process and variation of soil moisture were analyzed with the measured data of temperature and soil depth with each layer in Juntang Lake Basin on the northern slope of Tianshan Mountains in seasonal frozen soil area during the period from 2013 to 2014. Both freezing and thawing process within seasonal frozen soil was investigated, and the effect of soil moisture distribution and migration characteristics in different layers on the snowmelt runoff was examined. The results showed that the process of freezing and thawing permafrost depth changed, and the temperature of different freezing and thawing rate was not a subject; migration of soil moisture and soil temperature was subject to change, correlation between soil temperature and humidity in surface 10 cm was significant; the correlation between the ground temperature in 10 cm above snow surface and soil moisture in 10 cm depth was analyzed in 2013 (R=0.924), and 2014 (R=0.908). Compared to the data of 2013 and 2014, the changes in seasonal frozen soil surfer moisture played the regulatory role in water infiltration, soil moisture transferred between the surface and underground, in the meantime, the migration of soil water had the impact on the seasonal freezing-thawing process, and resulted in the generation of snowmelt flood. The results revealed that there was the significant correlation between these factors. So study on freezing and thawing process of seasonal frozen soil and effects on snowmelt runoff has the important significance to forecast snowmelt flood, and the results can be used for the modeling and prediction of spring snowmelt flood in the Juntang River Basin.

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