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[1]GAO Shu-jing,ZHAO Long-shan,LIANG Xin-lan,et al.Surface Roughness Spatiotemporal Distribution of the Slope Land under Simulated Rainfall[J].Research of Soil and Water Conservation,2010,17(03):12-16,249.

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Surface Roughness Spatiotemporal Distribution of the Slope Land under Simulated Rainfall

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 03 Page number: 12-16,249 Column: Public date: 2010-06-20

Title:: Surface Roughness Spatiotemporal Distribution of the Slope Land under Simulated Rainfall

Author(s):: GAO Shu-jing, ZHAO Long-shan, LIANG Xin-lan, ZHANG Qing-feng, WU Fa-qi; College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China

Keywords:: surface roughness; geology statistics; DEM; cultivation

CLC:: S157

DOI:: -

Abstract:: The evolution of surface roughness in the process of water erosion, especially under the micro-surface conditions, is becoming the hot-spot in the discipline of soil erosion, while, it is still in the stage of exploratory development. In this paper, it attempts to reveal the spatiotemporal distribution of surface roughness in the process of water erosion based on the indoor artificial rainfall experiment. The results shows that: (1) man-made slope tillage have significant effects on both overall distribution of surface roughness and spatial distribution of surface relative elevation (SRE); (2) Rainfall can influence the distribution of SRE of contour tillage, artificial hoe and artificial dig, moreover, the maximum amount of elevation changes are in the lower slope. (3) During the rainfall erosion process, the spatial variability of surface roughness is greatest, while after the runoff the spatial variation of roughness is stabilized. The study reveals the spatial variation of surface roughness under the micro-surface conditions and may lay the foundation for a comprehensive surface roughness study of different slope, rainfall intensity in different conditions.

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