Assessment of gravelly soil redistribution caused by a two-tooth harrow in mountainous landscapes of the Yunnan-Guizhou Plateau, China

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

	Assessment of gravelly soil redistribution caused by a two-tooth harrow in mountainous landscapes of the Yunnan-Guizhou Plateau, China
	Jia, L. Z.1,2; Zhang, J. H.1 ; Zhang, Z. H.1,2; Wang, Y.3
刊名	SOIL & TILLAGE RESEARCH
	2017-05-01
卷号	168 页码:11-19
关键词	Gravelly soil Muddy soil Two-tooth harrow Tillage erosion Rocky mountainous area
ISSN号	0167-1987
通讯作者	Zhang, J. H.
英文摘要	The processes of soil redistribution caused by hoeing tillage in hilly areas have been increasingly recognized for nearly two decades. Yet, few studies have examined the effects of hoeing tillage on soil redistribution in rocky mountainous areas. Due to a high rock fragments content of gravelly soils, a special type of hoe called the two-tooth harrow has been widely used in the Yunnan-Guizhou Plateau, China. In order to assess gravelly soil redistribution, a series of tillage experiments were set up and the subsequent data were compared with those acquired previously in hilly areas. The displacement distance of gravelly soils increased with slope gradient linearly in the range of 0.05 to 0.69 m m(-1); however, when the slope gradient extended further, an exponential equation could better describe the relationship between them. The repose angle of gravelly soils was approximately 0.69-0.70 m m(-1). Large-size rock contents and implement types are two important factors affecting tillage depth. Tillage transport coefficients (k(3) and k(4)) of gravelly soil in rocky mountainous areas were 40 and 78 kg m(-1) tillage pass(-1), respectively, displaying a slightly large k(3) value but a significantly small k(4) value compared with those in hilly areas. Due to its energy saving and applicability to gravelly soils, the two-tooth harrow is more attractive to farmers than the normal hoe in rocky mountainous areas. Moreover, the two-tooth harrow is proved to be efficient and effective in reducing tillage erosion than the normal hoe. (C) 2016 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Soil Science
研究领域[WOS]	Agriculture
关键词[WOS]	TILLAGE EROSION RATES ; ROCK FRAGMENT COVER ; LONG-TERM TILLAGE ; STEEP SLOPES ; NORTHERN THAILAND ; POTATO PRODUCTION ; ATLANTIC CANADA ; ORGANIC-CARBON ; MANUAL TILLAGE ; TRANSLOCATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000394079800002
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/18561]
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
作者单位	1.Chinese Acad Sci & Minist Water Conservancy, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Sichuan Agr Univ, Coll Water Conservancy & Hydropower Engn, Yaan 625014, Peoples R China
推荐引用方式 GB/T 7714	Jia, L. Z.,Zhang, J. H.,Zhang, Z. H.,et al. Assessment of gravelly soil redistribution caused by a two-tooth harrow in mountainous landscapes of the Yunnan-Guizhou Plateau, China[J]. SOIL & TILLAGE RESEARCH,2017,168:11-19.
APA	Jia, L. Z.,Zhang, J. H.,Zhang, Z. H.,&Wang, Y..(2017).Assessment of gravelly soil redistribution caused by a two-tooth harrow in mountainous landscapes of the Yunnan-Guizhou Plateau, China.SOIL & TILLAGE RESEARCH,168,11-19.
MLA	Jia, L. Z.,et al."Assessment of gravelly soil redistribution caused by a two-tooth harrow in mountainous landscapes of the Yunnan-Guizhou Plateau, China".SOIL & TILLAGE RESEARCH 168(2017):11-19.