Modeling the morphology of gully cross sections in the Yuanmou Dry-hot Valley

doi:10.1080/02723646.2017.1306386

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 > 山地灾害与地表过程重点实验室

	Modeling the morphology of gully cross sections in the Yuanmou Dry-hot Valley
	Feng, Yuxiang 1; Mu, Hongli 1,2; Qin, Fachao 1; Deng, Qingchun 1; Liu, Hui 1; Zhang, Bin 1; Luo, Mingliang 1; Liu, Shoujiang 1; Liu, Gangcai3
刊名	PHYSICAL GEOGRAPHY
	2017
卷号	38 期号:5 页码:448-469
关键词	Morphological Characteristics Gully Cross-section Modeling Dry-hot Valley
ISSN号	0272-3646
DOI	10.1080/02723646.2017.1306386
通讯作者	Bin Zhang
英文摘要	Characterizing gully cross sections (GCs) is essential for calculating the volume and erosion rate of the gully. However, little research has focused on modeling the morphology of GCs. This study investigated 456 GCs with a laser distance meter located at the mouth, middle, and head of 152 gullies in the Yuanmou Dry-hot Valley of China; mapped them with AutoCAD software; fitted them with 2nd-6th degree polynomial functions, and discussed the correlation between the coefficients and the morphology of GCs. The results showed that: (1) using a 2nd-degree polynomial function (y=ax(2)+bx+c) to describe the morphology of GCs produced a better result than other polynomial functions; (2) the coefficient a of 2nd-degree polynomial function was correlated with depth (r=-0.226, p<0.01), gradient (r=0.545, p<0.01), and activities; and (3) the symmetry axis (-b/2a) of 2nd-degree polynomial function increased with gully change from left-deflection to right-skewed, and the absolute value showed the asymmetrical degree (r=0.216, p<0.01). This study will not only help to understand the morphology and evolution of gullies, but will also provide a scientific basis for prevention of gully erosion.
语种	英语
WOS记录号	WOS:000407552700004
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/19030]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位	1.China West Normal Univ, Sch Land & Resources, Nanchong, Peoples R China 2.Beijing Normal Univ, Sch Geog, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Feng, Yuxiang,Mu, Hongli,Qin, Fachao,et al. Modeling the morphology of gully cross sections in the Yuanmou Dry-hot Valley[J]. PHYSICAL GEOGRAPHY,2017,38(5):448-469.
APA	Feng, Yuxiang.,Mu, Hongli.,Qin, Fachao.,Deng, Qingchun.,Liu, Hui.,...&Liu, Gangcai.(2017).Modeling the morphology of gully cross sections in the Yuanmou Dry-hot Valley.PHYSICAL GEOGRAPHY,38(5),448-469.
MLA	Feng, Yuxiang,et al."Modeling the morphology of gully cross sections in the Yuanmou Dry-hot Valley".PHYSICAL GEOGRAPHY 38.5(2017):448-469.