Estimation of Soil Erosion to Define the Slope Length of Newly Reconstructed Gentle-Slope Lands in Hilly Mountainous Regions

doi:10.1038/s41598-019-41405-9

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

	Estimation of Soil Erosion to Define the Slope Length of Newly Reconstructed Gentle-Slope Lands in Hilly Mountainous Regions
	Han, Zhen 1; Zhong, Shouqin 1; Ni, Jiupai 1; Shi, Zhonglin3 ; Wei, Chaofu 1,2
刊名	SCIENTIFIC REPORTS
	2019-03-18
卷号	9 页码:11
ISSN号	2045-2322
DOI	10.1038/s41598-019-41405-9
通讯作者	Wei, Chaofu(weicf@swu.edu.cn)
英文摘要	Farming plot construction engineering in hilly areas plays an important role in the mechanization, large-scale production and industrialization of agriculture. The method is undertaken to improve water and soil conservation, enhance soil fertility and extend machinery agriculture. However, the positive effects of engineering require years to mature. The properties of newly reconstructed soil are not sufficient, i.e., with poor structure and low water holding capacity, resulting in deterioration of its physical properties and erosion. To date, most studies on plot characteristics and soil properties in farming plot construction engineering have neglected the influence of soil erosion. This paper addresses soil erosion characteristics at sites to define the appropriate slope length for newly reconstructed gentle-slope lands. Six field plots with a 10 degrees slope gradient and different lengths (5, 10, 20, 30, 40, and 50 m) were established under natural rainfall and simulated overland flow conditions. The soil detachment rate, runoff shear stress and stream power exhibited the same trends as runoff and soil loss. The soil erosion characteristics varied at sites with different slope lengths, and the degree of soil erosion reached its minimum on gentle-slope land sites of 30 or 40 m. Therefore, 30-40 m slope lengths may be the recommended range to control soil loss from newly reconstructed gentle-slope lands. The conclusions of this study provide theoretical guidance for farming plot construction engineering, which can promote the sustainable development of cultivated land resources in hilly mountainous regions.
资助项目	National Key Research and Development Program of China[2017YFD0800505] ; Foundation of Graduate Research and Innovation in Chongqing[CYB18089]
WOS关键词	INTERRILL EROSION ; OVERLAND-FLOW ; RUNOFF ; IMPACT ; CONSOLIDATION ; SEDIMENT ; TERRACES ; TILLAGE ; PLOTS
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000461415900003
资助机构	National Key Research and Development Program of China ; Foundation of Graduate Research and Innovation in Chongqing
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/25302]
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	Wei, Chaofu
作者单位	1.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China 2.Minist Agr, Key Lab Arable Land Conservat Southwestern China, Chongqing 400715, Peoples R China 3.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Han, Zhen,Zhong, Shouqin,Ni, Jiupai,et al. Estimation of Soil Erosion to Define the Slope Length of Newly Reconstructed Gentle-Slope Lands in Hilly Mountainous Regions[J]. SCIENTIFIC REPORTS,2019,9:11.
APA	Han, Zhen,Zhong, Shouqin,Ni, Jiupai,Shi, Zhonglin,&Wei, Chaofu.(2019).Estimation of Soil Erosion to Define the Slope Length of Newly Reconstructed Gentle-Slope Lands in Hilly Mountainous Regions.SCIENTIFIC REPORTS,9,11.
MLA	Han, Zhen,et al."Estimation of Soil Erosion to Define the Slope Length of Newly Reconstructed Gentle-Slope Lands in Hilly Mountainous Regions".SCIENTIFIC REPORTS 9(2019):11.