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| Development about methods of soil hydraulic conductivity determination in fields |
| Fan Jun1,Shao Mingan1,2,Wang Quanjiu1 |
| 1.Northwest A&F University,State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academic of Sciences and Ministry of Water Resources,712100,Yangling,Shaanxi;2.Institute of Geographical Sciences and Natural Resources,100101,Beijing: China |
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Abstract Soil hydraulic conductivity is an important factor for determination of proportion of precipitation infiltration to runoff in slope,and which is a key parameter in soil moisture circulation and soil erosion models.A great deal of theories and methods about it were studied in the world.The theories and application about methods of parameter determination on soil hydraulic conductivity in fields are reviewed,and the advantages and disadvantages of those methods are analyzed.Brief and clipping apparatus of determination soil hydraulic conductivity would be applied gradually,and the method of reducing head of emitter would be applied widely because of saving water and determination speediness.Disc infiltrometer is a portable apparatus,the more information and data could be selected by which,and which could be used in determination of soil hydraulic conductivity in slope,so the relative research about it should be developed widely.
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Received: 22 June 2005
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