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[1]ZHANG Lichao,LIU Yaojun,LI Zhaoxia,et al.Characteristics of the Soil Surface Flow Networks on Red Soil Sloping Farmland Under Rainfall Simulation[J].Research of Soil and Water Conservation,2019,26(01):53-60.

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Characteristics of the Soil Surface Flow Networks on Red Soil Sloping Farmland Under Rainfall Simulation

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 01 Page number: 53-60 Column: Public date: 2019-02-28

Title:: Characteristics of the Soil Surface Flow Networks on Red Soil Sloping Farmland Under Rainfall Simulation

Author(s):: ZHANG Lichao^1,2, LIU Yaojun¹, LI Zhaoxia², GE Peilin¹, YANG Wei³; 1. Jiangxi Provincial Key Laboratory of Soil Erosion and Prevention, Jiangxi Institute of Soil and Water Conservation, Nanchang 330029, Chhina;
2. Key Laboratory of Arable Land Conservation in the Middle and Lower Reaches of Yangtze River, ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China;
3. Hubei Water Resources Research Institute, Wuhan 430070, China

Keywords:: microrelief; laser scanning; flow networks; water erosion on slope; fractal dimension

CLC:: S157

DOI:: -

Abstract:: In order to measure the features of surface flow networks on red soil sloping farmland under rainfall simulation, the submillimeter level high precision laser scanning and the computer digital image processing methods were used for the in-situ measurement of the surface flow networks on the red soil sloping farmland which weathered from several typical parent materials in the southern China. The results showed that:(1) flow density and runoff frequency increased with the rainfall duration, especially in the first rainfall event; (2) in the second and third rainfall events, the differences of flow density and runoff frequency varied for the different soil properties and rainfall intensity; (3) in the study of slope erosion, the fractal dimension D_s were beneficial in distinguishing the variation of the overall network characteristics before and after rainfall. The results of this study provided the advice on the soil and water conservation of red soil sloping farmland in southern China.

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