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[1]GONG Jia-guo,PANG Jin-cheng,JIA Yang-wen,et al.Experimental Study on Influencing Factors of Ephemeral Gully Erosion on Losses Slope[J].Research of Soil and Water Conservation,2011,18(01):7-11.

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Experimental Study on Influencing Factors of Ephemeral Gully Erosion on Losses Slope

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 01 Page number: 7-11 Column: Public date: 2011-02-20

Title:: Experimental Study on Influencing Factors of Ephemeral Gully Erosion on Losses Slope

Author(s):: GONG Jia-guo¹, PANG Jin-cheng², JIA Yang-wen¹, WANG Wen-long³, ZHOU Zu-hao¹, PENG Hui¹; 1. Department of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing, 100038, China;
2. Administration of Weihe River in Shaanxi Province, Xi’an 710018, China;
3. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling, Shaanxi 712100, China

Keywords:: Loess; ephemeral gully erosion; influence factors; rainfall intensity; slope gradient; upper catchment area; tillage

CLC:: S157.1

DOI:: -

Abstract:: Ephemeral gully erosion is an important erosion type in hilly area of Loess Plateau. The influence of rainfall intensity, area of upper catchment, gradient and tillage to ephemeral gully was studied preliminarily by simulating experiments. Main conclusions as follows: there was positive correlation between ephemeral gully erosion velocity and slope gradient, rainfall intensity, upper catchment area; Tillage changed the response relationship between rainfall intensity, slope gradient, upper catchment area and erosion velocity by changing the surface soil structure. Erosion velocity showed accelerating trend from small slope and small catchment area to steep slope and large catchment area. On lesser gradient slope, tillage reduced the erosion changes invited by rainfall intensity significantly, but on bigger gradient slope, tillage increased erosion velocity under bigger rainfall intensity. This study can provide with theoretical support for understanding characteristic of ephemeral gully erosion deeply, developing the mechanism.

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