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| Limestone soil transferring processes under different rainfall patterns |
（1. Forest College of Guizhou University，550025,Guiyang，China;
2.Water Conservancy Bureau of Zunyi County, Guizhou Province，563100，Zunyi，Guizhou，China） |
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Abstract Limestone soil transferring processes were monitored under different simulated rainfall patterns. Results showed as follows. 1)The maximum quantity of surface soil erosion was 1201.86g when the precipitation was 102mm and rainfall intensity was 2.03mm/min; underground soil erosion was 6.563g when rainfall intensity was 0.37mm/min. 2)The quantity of surface soil erosion was at most 796.7g when rainfall intensity varied from strong to weak with the same precipitation time of 90min, but lasting flow soil erosion was 41.38g and underground soil erosion was 4.923g when rainfall intensity changed from weak to strong. 3) The main factor which affects the quantity of surface soil erosion is the intensity of rainfall, while the factor which affects the lasting flow soil erosion is the later intensity of rainfall. The duration of rainfall determines the amount of underground soil erosion.
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Received: 27 March 2013
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