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[1]LIANG Shuangshuang,LIN Jinshi,HUANG Yanhe,et al.Splash Erosion Characteristics of Different Soil Layers on the Collapsing Wall Under Simulated Raindrop[J].Research of Soil and Water Conservation,2017,24(01):43-48.

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Splash Erosion Characteristics of Different Soil Layers on the Collapsing Wall Under Simulated Raindrop

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 01 Page number: 43-48 Column: Public date: 2017-02-28

Title:: Splash Erosion Characteristics of Different Soil Layers on the Collapsing Wall Under Simulated Raindrop

Author(s):: LIANG Shuangshuang, LIN Jinshi, HUANG Yanhe, JIANG Fangshi, GE Hongli, WANG Qian, WANG Zhengqing, JIA Shen, CAO Tongtong; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China

Keywords:: splash erosion; raindrop intensity; splash distance; size distribution

CLC:: S152;S153;S157.1

DOI:: -

Abstract:: Collapsing wall is an important part of the collapsing hill erosion. In order to study splash erosion characteristics in different soil layers of collapsing wall, a raindrop generator was made to simulate different diameter raindrops, and we studied the splash amount and different characteristics of the soil particles in different soil layers of collapsing wall under the raindrop size and different raindrop intensities. The result shows that the soil particles of splash erosion present the concentrated distribution in the range of 0 to 5 cm, among which the red soil splash erosion with the rate change of rain intensity is the maximum, the second is the clastic, and the minimum is the sand layer. By two-factor variance analysis, the influence of soil characteristic on splash erosion amount is greater than the rain intensity. The mass percentage of particles with size of 0.05～2 mm was the most, while the mass percentage of particles with size less than 0.002 mm was the least, which can speculate the size range that makes splash amount reach the maximum. With the increase of splash erosion distance, soil particles with size more than 2 mm are the most difficult to be moved due to splash, while soil particles with size of 0.002～0.05 mm and with size less than 0.002 mm are the most vulnerable to be moved through splash.

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