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Published online 6 May 2005
Published in Soil Sci Soc Am J 69:776-782 (2005)
DOI: 10.2136/sssaj2004.0247
© 2005 Soil Science Society of America
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Testing the Pore-Solid Fractal Model for the Soil Water Retention Function

Kang Wanga, Renduo Zhanga,b,* and Fuqin Wanga

a F. Wang, State Key Lab. of Water Resources and Hydropower Engineering Science, Wuhan Univ., Wuhan 430072, China
b Dep. of Renewable Resources, Univ. of Wyoming, Laramie, WY 82071-3354, USA



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Fig. 1. Measured soil water retention data (circles), fitted curve of Eq. [5] (solid line), and calculated curve of Eq. [6] (dash line) for (a) a sand soil with ß/{theta}s > 1 and (b) a clay soil with ß/{theta}s < 1.

 


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Fig. 2. Comparison of measured water retention data (circles) of a silty loam and fitted curves with Eq. [5] (solid line) and with Eq. [6] (dash line).

 


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Fig. 3. Comparison of measured water retention data (circles) of a silty clay loam soil and fitted curves with Eq. [5] (solid line) and with Eq. [6] (dash line).

 


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Fig. 4. Measured soil water retention data (circles) of a sand soil and fitted curves with Eq. [5] ({theta}s = 0.39, ß = 0.53) (solid line) and Eq. [7] (setting {theta}r = 0) (dash line).

 


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Fig. 5. Comparison of measured water retention data (circles) of a loam soil and fitted curves with Eq. [5] (solid line) and with Eq. [8] (dash line).

 


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Fig. 6. Measured water retention data (circles), fitted curve with Eq. [5] (solid line), and calculated curve with D from Eq. [4] (dash line) for (a) a sandy loam soil and (b) a sandy clay loam soil.

 





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