Combined effects of tillage direction and slope gradient on soil translocation by hoeing

doi:10.1016/j.catena.2018.12.039

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Combined effects of tillage direction and slope gradient on soil translocation by hoeing
	H.C. Xu 1,2; L.Z. Jia 3; J.H. Zhang1 ; Z.H. Zhang ; Y.H. Wei 1,2
刊名	CATENA
	2019
卷号	175 页码:421-429
关键词	Tillage direction Slope gradient Tillage erosion Hoeing tillage Magnetic tracer Dry-hot valley
ISSN号	0341-8162
DOI	10.1016/j.catena.2018.12.039
产权排序	1
文献子类	Article
英文摘要	Few studies have dealt with tillage erosion processes under the combined action of tillage direction and slope gradient, while effects of the two factors were independently examined. This study aims to elucidate the variation of soil translocation at different tillage directions and slope gradients. The magnetic tracer method was used to measure the soil translocation caused by downslope (0 degrees), oblique downslope (45 degrees), contour (90 degrees), oblique upslope (135 degrees) and upslope (180 degrees) tillage under different slope gradients (0.087 to 0.577 m m(-1)). The net downslope displacement of soil (NDDS) was closely related to tillage direction and slope gradient. However, the relationship between the NDDS and tillage direction varied with slope gradient. For gentle slopes (0-0.30 m m(-1)), the NDDS showed three clear changes: slow decrease (0 degrees to 45 degrees), rapid decrease (45 degrees to 135 degrees) and little change (135 degrees to 180 degrees). Meanwhile, the NDDS decreased rapidly from 0 degrees to 135 degrees and changed little from 135 degrees to 180 degrees on the moderate slopes (0.30-0.45 m m(-1)), while it decreased rapidly from 0 degrees to 90 degrees and varied little from 90 degrees to 180 degrees on the steep slopes (0.45-0.60 m m(-1)). A binary trigonometric function equation could be used to express the changes in NDDS with the combined action of tillage direction and slope gradient. Applying 135 degrees and 90 degrees hoeing tillage directions to gentle and moderate slopes, and steep slopes, respectively, may be an important alternative in reconciling the contradiction between soil conservation optimization and labor saving.
电子版国际标准刊号	1872-6887
语种	英语
WOS记录号	WOS:000459358500038
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/25257]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	J.H. Zhang
作者单位	1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Conservancy, Chengdu 610041, China;(b)University of Chinese Academy of Sciences, Beijing 100049, China; 2.State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; 3.School of Land and Resources, China West Normal University, Nanchong 637009, China
推荐引用方式 GB/T 7714	H.C. Xu,L.Z. Jia,J.H. Zhang,et al. Combined effects of tillage direction and slope gradient on soil translocation by hoeing[J]. CATENA,2019,175:421-429.
APA	H.C. Xu,L.Z. Jia,J.H. Zhang,Z.H. Zhang,&Y.H. Wei.(2019).Combined effects of tillage direction and slope gradient on soil translocation by hoeing.CATENA,175,421-429.
MLA	H.C. Xu,et al."Combined effects of tillage direction and slope gradient on soil translocation by hoeing".CATENA 175(2019):421-429.