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[1]HAN Lu,CHEN Hui,CHEN Tongtong,et al.Variations of the Soil Temperature and Moisture in Qaidam Basin and Their Relationship[J].Research of Soil and Water Conservation,2016,23(06):166-173.

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Variations of the Soil Temperature and Moisture in Qaidam Basin and Their Relationship

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 06 Page number: 166-173 Column: Public date: 2016-12-28

Title:: Variations of the Soil Temperature and Moisture in Qaidam Basin and Their Relationship

Author(s):: HAN Lu, CHEN Hui, CHEN Tongtong, FU Yangyang, LI Yang; College of Resources and Environment Sciences, Hebei Normal University, Hebei Key Laboratory of Environmental Change and Ecological Construction, Shijiazhuang 050024, China

Keywords:: soil temperature; soil moisture; variation characteristics; Qaidam Basin

CLC:: S152.7

DOI:: -

Abstract:: Through the data analysis of soil temperature from July 2010 to June 2011, we can conclude the variations of soil temperature and moisture in the four sampling sites (Golmud, Nuomuhong, Delingha and Da Qaidam) of Qaidam Basin, and come to the preliminary discussion on the reasons for such changes. Results show that the four sampling sites have similarity in terms of the daily variation of soil temperature. The temperature of shallow soil (10, 30 cm) changes dramatically daily, and the daily temperature variation of deeper soil layers (50, 70, 90 cm) is relatively stable. The soil temperatures of four sites in observation years show the approximate shape of a sine curve, which reaches the highest in August and the lowest in January. In February and March, the temperatures in different depths of soil are basically the same; analysis from the day of the soil moisture changes can be divided into two stages:accumulation and attenuation. The daily energy budget of soil moisture keeps the dynamic balance. The seasonal soil moisture change pattern is similar. But each sampling site has its own relative characteristic. The amplitude of soil moisture decreased in the order:Da Qaidam > Delingha > Nuomuhong, and extremum appearance time is different. There is a significant correlation between soil temperature and soil moisture.

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