| Titles |
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English :
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Effect of some soil physical properties on soil thermal diffusivity
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Arabic :
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تاثير بعض الخواص الطبيعية للاراضى على الانتشار الحرارى
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| Abstract |
Thermal diffusivity is carried out on different air dry soils varies in their textures . The thermal diffusivity was calculated according to the ratio between thermal conductivity MJm-3C to volumetric heat capacity MJm-30C-1 of these soils . Data indicated that mean values of thermal diffusivity of the studied soils were 1.70913E-06, 1.99114E-06 , 1.364E-06 AND 9.12126E-07 for loamy sand , sandy soil , sandy loam soil and cancerous soil respectively . The correlation coefficient between values of the thermal diffusivity of air dry soil m2/s with clay content % are positive and highly significant 0.742** and CaCO3 %0.466** , while highly negative correlation between thermal diffusivity values of air dry soil m2/s with water holding pores -0.931** . The multiple regression between values of thermal diffusivity m2/s Y and particle size distribution CaCO3 % EC and pore size distribution are highly significant R = 0.791** , R=0.71288 and R =0.703** respectively and equation are as following
Y =1.645225-6.4742E-003C1-2.3285E-002C2-3.88266E-002C3+1.4375E-001C4
Y=3.370471+1.9262E-001C5-6.4537C6-2.0509C7
Y=-7.670840+2.0865E-001C8+7.2622E-001C9+3.8389E-001C10-3.3.0116E-001C11
Where
Y= soil thermal diffusivity m2/s , C1=Coarse sand % , C2 =Fine sand % C3 =Silt % C4 =Clay % C5= CaCO3 % , C6 =Organic matter % C7 =EC Ds/m C8 = Quickly drainable pore QDP % , C9= Slowly drainable pore SDP % C10 Water holding pores % C11 =fine capillary pores FCP %
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| URL |
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| Publication year |
2003
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| Pages |
664-671
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| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
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| City |
القاهرة
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| serial title |
Egypt. J. Appl. Sci
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| ISSN |
1110-1571
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| Author(s) from ARC |
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| External authors (outside ARC) |
حسام عبد المنعم احمد
معهد الاراضى والمياه والبيئة
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| Agris Categories |
Soil chemistry and physics
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| Publication Type |
Journal
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