Changes of soil surface roughness under water erosion process
Changes of soil surface roughness under water erosion process
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水蚀过程中土壤表面粗糙度的变化
DOI：
10.1002/hyp.9939
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发表时间：
2014-06
影响因子：
3.2
通讯作者：
Wu, Fa-Qi
中科院分区：
文献类型：
--
作者：
Zheng, Zi-Cheng;He, Shu-Qin;Wu, Fa-Qi
研究了不同降雨强度下土壤表面粗糙度的变化特征，探讨了土壤表面粗糙度与不同水蚀过程的相互作用。根据中国黄土高原的农业习惯，采用耙田、人工锄地、人工挖坑和等高耕作4种人工管理措施，模拟不同类型的土壤表面粗糙度，并使用一个附加的光滑坡面进行比较。在5个1 m × 2 m的箱中进行了20个降雨模拟试验，在15°坡度上进行了两种降雨强度（0.68和1.50 mm min-1）。在溅蚀过程中，除耙耕地和光滑基线外，雨强为0.68 mm min-1时，所有处理的土壤表面粗糙度均减小，而在雨强为1.50 mm min-1时，除光滑基线外，所有处理的土壤表面粗糙度均增大。在片蚀过程中，土壤表面粗糙度下降，除锄地在降雨强度为0.68 mm min−1的所有处理。然而，在1.50 mm min-1的降雨强度下，人工锄地和耙地农田的土壤表面粗糙度增加。在两种雨强下，不同处理的土壤表面粗糙度对片蚀均有控制作用。对于细沟侵蚀，两种降雨强度下，耙田和人工锄地处理的土壤表面粗糙度增加，人工挖地和等高耕作处理的土壤表面粗糙度降低。在降雨强度为0.68 mm min−1时，土壤表面粗糙度对产流产沙的阻力控制临界值为0.706 cm。在1.50 mm min−1降雨强度下，控制径流阻力的临界地表粗糙度为1.633 cm，控制产沙阻力的临界地表粗糙度为0.706 cm。这些研究结果对阐明土壤表面粗糙度的侵蚀本质和坡耕地治理具有重要意义。版权所有© 2013约翰威利父子有限公司.
The objective of this study was to determine the changing characteristics of soil surface roughness under different rainfall intensities and examine the interaction between soil surface roughness and different water erosion processes. Four artificial management practices (raking cropland, artificial hoeing, artificial digging, and contour tillage) were used according to the local agriculture customs of the Loess Plateau of China to simulate different types of soil surface roughness, using an additional smooth slope for comparison purposes. A total of 20 rainfall simulation experiments were conducted in five 1 m by 2 m boxes under two rainfall intensities (0.68 and 1.50 mm min−1) on a 15° slope. During splash erosion, soil surface roughness decreased in all treatments except raking cropland and smooth baseline under rainfall intensity of 0.68 mm min−1, while increasing for all treatments except smooth baseline under rainfall intensity of 1.50 mm min−1. During sheet erosion, soil surface roughness decreased for all treatments except hoeing cropland under rainfall intensity of 0.68 mm min−1. However, soil surface roughness increased for the artificial hoeing and raking cropland under rainfall intensity of 1.50 mm min−1. Soil surface roughness has a control effect on sheet erosion for different treatments under two rainfall intensities. For rill erosion, soil surface roughness increased for raking cropland and artificial hoeing treatments, and soil surface roughness decreased for artificial digging and the contour tillage treatments under two rainfall intensities. Under rainfall intensity of 0.68 mm min−1, the critical soil surface roughness was 0.706 cm for the resistance control of runoff and sediment yield. Under rainfall intensity of 1.50 mm min−1, the critical soil surface roughness was 1.633 cm for the resistance control of runoff, while the critical soil surface roughness was 0.706 cm for the resistance control of sediment yield. These findings have important implications for clarifying the erosive nature of soil surface roughness and harnessing sloped farmland. Copyright © 2013 John Wiley & Sons, Ltd.
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影响因子：
3.2
作者：
J. Nicolau
通讯作者：
J. Nicolau
影响因子：
5.4
作者：
L. M. Gordon;S. Bennett;R. Wells
通讯作者：
L. M. Gordon;S. Bennett;R. Wells
DOI：
10.1016/j.agwat.2010.07.016
发表时间：
2011-09
期刊：
Fuel and Energy Abstracts
影响因子：
--
作者：
P. Dlamini;C. Orchard;G. Jewitt;S. Lorentz;L. Titshall;V. Chaplot
通讯作者：
P. Dlamini;C. Orchard;G. Jewitt;S. Lorentz;L. Titshall;V. Chaplot
DOI：
10.2136/sssaj1969.03615995003300020036x
发表时间：
1969-03
影响因子：
2.9
作者：
W. C. Moldenhauer;W. D. Kemper
通讯作者：
W. C. Moldenhauer;W. D. Kemper
影响因子：
2.9
作者：
Mingyi Yang;D. Walling;J. Tian;Pu-ling Liu
通讯作者：
Mingyi Yang;D. Walling;J. Tian;Pu-ling Liu