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[1]AN Xiao-qi,GUO Cheng-jiu,SU Fang-li,et al.Simulation Experiment of Effect of Antecedent Soil Moisture Content on Characteristics of Soil Erosion from Dumping Soil Land[J].Research of Soil and Water Conservation,2009,16(06):116-119,124.

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Simulation Experiment of Effect of Antecedent Soil Moisture Content on Characteristics of Soil Erosion from Dumping Soil Land

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 06 Page number: 116-119,124 Column: Public date: 2009-12-20

Title:: Simulation Experiment of Effect of Antecedent Soil Moisture Content on Characteristics of Soil Erosion from Dumping Soil Land

Author(s):: AN Xiao-qi¹, GUO Cheng-jiu¹, SU Fang-li¹, LANG Lian-shan², HONG Yun-liang¹; 1. College of Water Resoures, Shengyang Agriculture University, Shengyang 110161, China;
2. Water Department of Jianchang Country, Jianchang, Liaoning 125300, China

Keywords:: antecedent soil moisture content; infiltration; dumping pile; soil erosion

CLC:: S157.2

DOI:: -

Abstract:: The effect of antecedent soil moisture content on characteristics of in filtration, runoff and sediment was investigated by rainfall simulation experiment of dumping soil.The results showed that: infiltration rate spoil slope power function with time changes, the higher the initial moisture content, the faster the runoff.However, under different rainfall conditions the laws well change.Rainfall intensity under 0.64 mm/min conditions, the rate of sediment runoff will peak early, diminishing with time, antecedent soil moisture content the higher, the earlier of peak. Rainfall intensity under 1.05 mm/min conditions, changes in sediment was the volatility of the rate of growth, no significant peak.The optimal antecedent soil moisture content values for minimization of soil losses is determined by the approximately parabola relations of soil losses and antecedent soil moisture content, which is 9.65%.

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