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| Experiment on characteristic of interface between root system and soil |
| Song Weifeng,Chen Lihua,Liu Xiuping |
| College of Soil and Water Conservation,Beijing Forestry University; Key Laboratory of Soil and Water Conservation and Combating Desertification,Ministry of Education,100083,Beijing,China |
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Abstract In order to probe into the frictional characteristic between root system and soil,based on the Coulomb theory,under different soil water content and soil bulk density,different normal load between root system of Pinus tabuleeformis,Robinnia pseudoscacia and soil,the shear characteristics between root system of Pinus tabuleeformis,Robinnia pseudoscacia and soil were investigated by the method of shear tests.The results showed that the frictional resistance of between root system of Robinnia pseudoscacia and soil was higher than that of Pinus tabuleeformi.At last,the influences of normal stress,root system species, soil bulk density and soil water content on the shear characteristic of interface were discussed.
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Received: 09 October 2005
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