| 生物土壤与生态 |
|
|
|
|
| Influence of Soil Texture on the Thermal Diffusivity |
| LIU Jing-xing1, LI Chun-tao1, LIANG Yu-xiang1, ZHANG Chun-lai2 |
| 1.Material Research Center for Eco-soil Recovery, School of Chemical Engineering, Sichuan University, Chengdu 610065, China; 2.State Key Laboratory of Earth Surface Processes and Resource Ecology; MOE Engineering Research Center of Desertification and Blown-sand Control, Beijing Normal University, Beijing 100875, China |
|
|
|
|
Abstract The study of soil thermal property is an important method for analyzing the surface energy balance, and soil thermal diffusivity is a key parameter which characterizes soil thermal property. Thermal diffusivities of soils of different texture were calculated according to different solutions of heat flow equation in non-steady condition. The results indicated that thermal diffusivities of air-dried soils were less than 1.4×10-3 cm2·s-1 and decreased with time. Better soil nutrient and lighter soil texture result in poorer heat transfer.
|
|
Received: 11 June 2009
Published: 20 May 2010
|
|
|
[1]R B博德,W E斯图沃特,E N莱特富特.传递现象[M].北京:化学工业出版社,2002,302-304.
[2]高志球,卞林根,张雅斌,等.土壤热传导方程解析解和那曲地区土壤热扩散率研究[J].气象学报,2002(3):352-360.
[3]Passerat de Silans,A M B,Monteny B A,Lhomme J P.Apparent soil thermal diffusivity,a case study:HAPEX-Sahel experiment,Agri Forest Meteor,1996,81:201-216.
[4]Horton R,Wierenga P J,Nielsen D R.Evaluation of methods for determining the apparent thermal diffusivity of soil near the surface [J].Soil Sci of Soc Am J,1983,47:25-32.
[5]Horton R, Wierenga P J. Estimating the soil heat flux from observation of soil temperature near the surface[J].Soil Sci of Soc Am J,1983,47:14-20.
[6]李毅,邵明安,王文焰,等.质地对土壤热性质的影响研究[J].农业工程学报,2003,19(4):62-65.
[7]董光荣,董玉祥,金炯,等.西藏“一江两河”中部流域地区土地沙漠化的成因与发展趋势[J].中国沙漠,1994,14(2):9-17.
[8]金炯,董光荣,劭立业,等.西藏土地沙漠化问题的研究[J].地理研究,1994,13(1):60-69.
[9]靳鹤龄,李新荣,龚家栋.藏东“三江”流域土地沙漠化成因及防治对策[J].中国沙漠,2003,23(1):28-32.
[10]刘毅华,董玉祥.西藏“一江两河”中部流域地区土地沙漠化变化的驱动因素分析[J].中国沙漠,2003,23(4):355-360. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2010, Vol. 30 
