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[1]LIU Cheng,WANG Yu-kuan,FU Bin,et al.Rain Infiltration Experiment Study Under Different Land Use Types of Purple Soil[J].Research of Soil and Water Conservation,2009,16(03):20-23.

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Rain Infiltration Experiment Study Under Different Land Use Types of Purple Soil

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 16 Number of periods: 2009 03 Page number: 20-23 Column: Public date: 2009-06-20

Title:: Rain Infiltration Experiment Study Under Different Land Use Types of Purple Soil

Author(s):: LIU Cheng^1,2, WANG Yu-kuan¹, FU Bin¹, REN Yi^1,2, YANG Jin-feng^1,2; 1. Institute of Mountain Hazards and Environment, the Chinese Academy of Sciences, Chengdu 610041, China;
2. Graduate University of the Chinese Academy of Science, Beijing 100049, China

Keywords:: purple soil; different land use; simulated rainfall; rainfall infiltration

CLC:: S157.1;F301.24

DOI:: -

Abstract:: Rainfall infiltration is important link of hydrology processes produced by natural rain on slope. This text uses Norton reverse jet artificial simulation of rainfall devices to investigate the rainfall infiltration feature of forestland and grassland on purple soil by simulated rainfall test on the in-situ runoff plot. The results showed that the rainfall infiltration features have significant difference among different land use types on purple soil. The rainfall infiltration of undisturbed forestland and undisturbed grassland changed slowly with time. The rainfall infiltration of farmland, treated forestland and treated grassland varied acutely with time. The stable infiltration rate were undisturbed forestland > undisturbed grassland > farmland > treated grassland > treated forestland under different rainfall intensity. Comparing the differences of rainfall filtration rate of various land use and analyzing the reasons for the differences, it was found that, under the same initial soil moisture condition, rainfall intensity and the hydrologic function of vegetation were the decisive factors that affected the rainfall infiltration rate of undisturbed forestland and undisturbed grassland of purple soil. Rainfall intensity and soil physical and chemical properties were decisive factors that affected the rainfall infiltration rate of farmland, treated forestland and treated grassland of purple soil.

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