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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (23): 171-174.doi: 10.11924/j.issn.1000-6850.casb15030139

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Experiment of Soil Thermal Diffusivity and Liquid Water Flux Density in Shanxi Province

  

  • Received:2015-03-17 Revised:2015-06-03 Accepted:2015-06-05 Online:2015-08-20 Published:2015-08-20

Abstract: We compare the differences of soil thermal properties in 11 areas of Shanxi Province and discuss different soil thermal properties of different depths of soil layers, in order to research the spatial and temporal distribution of soil thermal properties of Shanxi Province. Using Gao method, based on the shallow soil temperature data of automatic observation stations in 11 areas of Shanxi Province from May to October in 2009, we obtained the results as: (1) the soil thermal diffusivity was k=0.01×10-6-5.09×10-6 m2/s, and liquid water flux density was W=-13.28×10-6-26.92×10-6 m/s; (2)soil thermal diffusivity and liquid water flux density of Shanxi Province were vertically heterogeneous; (3) in the 0.025 m depth of soil layer, the minimum value of the soil thermal diffusivity and liquid water flux density both appeared in Datong City, while the maximum values both appeared in Jincheng City. The maximum values of liquid water flux density appeared at the 0.025 m layer in all areas of Shanxi Province.