The dynamic process of slope rill erosion analyzed with a digital close range photogrammetry observation system under laboratory conditions

doi:10.1016/j.geomorph.2019.106893

	The dynamic process of slope rill erosion analyzed with a digital close range photogrammetry observation system under laboratory conditions
	Jiang, Yanmin 2,3,4; Shi, Haijing 2; Wen, Zhongming 1; Guo, Minghang 2; Zhao, Jun 2; Cao, Xiaoping 2; Fan, Yongming 1; Zheng, Cheng 1
刊名	GEOMORPHOLOGY
	2020-02-01
卷号	350 页码:13
关键词	Rill erosion pattern Digital close range photogrammetry system 3D laser scanner Rill network extraction Dynamic monitoring
ISSN号	0169-555X
DOI	10.1016/j.geomorph.2019.106893
通讯作者	Shi, Haijing(shihaijingcn@nwafu.edu.cn)
英文摘要	As the main process of soil erosion in the Loess Plateau of China, rill erosion accounts for a large proportion of the total erosion on the slope. Quantifying the rill shape is crucial for studying the mechanisms and evolution of rill erosion. The objective of this study is to monitor the dynamic process of slope rill erosion using on a digital close range photogrammetry observation system during continuous rainfall. Artificial simulated rainfall experiments were conducted, and images were obtained at different time intervals. We used hydrological analysis and profile analysis tools in geographic information system (GIS) technology to extract rill networks and their main parameters to quantitatively describe the erosion processes of rill morphology. The results showed that (1) compared with the error from the traditional runoff sediment measurement method, the average error of the system for estimating soil loss was -7.06% and 1.05%, respectively, and the highest precision for a single observation was 99.46%; (2) the rill erosion process could be divided into several stages: raindrop splashing - eclipse - drop pit - erosion cave - rill cutting head - rill erosion - rill network; and (3) after rainfall lasted for 80 min, the density and the degree of splitting increased continuously, and the maximum rill width and depth both showed fluctuating trends. The area of 7.5 m to 9.5 m away from the top of the surface was the most active area of rill erosion. The digital close range photogrammetric observation system can accurately obtain evolution information about rill erosion morphology during continuous rainfall, which provides a reference for future studies of soil erosion processes. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences (Pan-Third Pole Environment Study for a Green Silk Road)[XDA20040202] ; National Natural Science Foundation of China[41571269] ; Innovation Project of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-C3]
WOS关键词	EPHEMERAL GULLY EROSION ; SOIL-EROSION ; MORPHOLOGICAL-CHARACTERISTICS ; INTERRILL EROSION ; LOESS PLATEAU ; LAND-USE ; RAINFALL ; SIMULATION ; FLOW ; EVOLUTION
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000532088300014
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences (Pan-Third Pole Environment Study for a Green Silk Road) ; National Natural Science Foundation of China ; Innovation Project of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159668]
专题	中国科学院地理科学与资源研究所
通讯作者	Shi, Haijing
作者单位	1.Northwest A&F Univ, Coll Grassland Agr, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Yanmin,Shi, Haijing,Wen, Zhongming,et al. The dynamic process of slope rill erosion analyzed with a digital close range photogrammetry observation system under laboratory conditions[J]. GEOMORPHOLOGY,2020,350:13.
APA	Jiang, Yanmin.,Shi, Haijing.,Wen, Zhongming.,Guo, Minghang.,Zhao, Jun.,...&Zheng, Cheng.(2020).The dynamic process of slope rill erosion analyzed with a digital close range photogrammetry observation system under laboratory conditions.GEOMORPHOLOGY,350,13.
MLA	Jiang, Yanmin,et al."The dynamic process of slope rill erosion analyzed with a digital close range photogrammetry observation system under laboratory conditions".GEOMORPHOLOGY 350(2020):13.