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[1]WANG Xiaobo,ZHU Yongqing,WU Yijin,et al.Effects of Rainfall Regimes on Soil Erosion on Red Soil Slopes Under Different Vegetation Types[J].Research of Soil and Water Conservation,2017,24(02):6-11.

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Effects of Rainfall Regimes on Soil Erosion on Red Soil Slopes Under Different Vegetation Types

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 02 Page number: 6-11 Column: Public date: 2017-04-28

Title:: Effects of Rainfall Regimes on Soil Erosion on Red Soil Slopes Under Different Vegetation Types

Author(s):: WANG Xiaobo¹, ZHU Yongqing², WU Yijin¹, LIU Qingri¹, GE Yong³, WU Man⁴; 1. Key Laboratory for Geographical Process Analysis & Simulation, Hubei Province, CCNU, Wuhan 430079, China;
2. Soil and Water Conservation Monitoring Center, Changjiang Water Resources Commission, Wuhan 430010, China;
3. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
4. Caidian Station of Soil and Water Conservation, Wuhan 430100, China

Keywords:: red soil slope; runoff plot; soil and water loss; rainfall regimes; vegetation type

CLC:: S157.1

DOI:: -

Abstract:: In order to understand the relationship between rainfall regimes, vegetation types and red soil erosion processes, collected measurements of 146 rainfall events in runoff plots on red soil slopes with different vegetation types in Xi Lake watershed, Caidian, Wuhan were analyzed. Based on K-means clustering, 146 rainfall events were classified into four rainfall regimes:regime A (medium amount, low intensity, long duration and high frequency of rainfall), regime B (extremely high amounts, extremely high intensity, short duration and low frequency of rainfall), regime C (high amounts, high intensity, medium duration and low frequency of rainfall) and regime D (low amounts, low intensity, short duration and high frequency of rainfall). Processes of soil erosion on the bare slope and the fruit-bearing forest slope had a large amount of runoff generation and sediment yield, a stable runoff-sediment relationship and weak capacity for water and soil conservation. More attention should be paid to rainfall regimes A and C in this type process. Processes of soil erosion on the broadleaved forest slope, coniferous forest slope, herbage slope and lawn slope had a small amount of runoff generation and soil erosion, an unstable runoff-sediment relationship and strong capacity for water and soil conservation under erosive rainfall except rainfall regimes B. More attention should be paid to rainfall regimes B and C in this type process.

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