干旱区生态环境知识资源中心(Arid): Spatial pattern of hydrological and erosion behaviour along a dolomite hillslope in Southwest China

Arid

DOI	10.1016/j.catena.2023.107407
	Spatial pattern of hydrological and erosion behaviour along a dolomite hillslope in Southwest China
	Meng, Qingmei; Wang, Sheng; Fu, Zhiyong; Deng, Yusong; Chen, Hongsong
通讯作者	Fu, ZY
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2023
卷号	232
英文摘要	Dolomite hillslopes are highly vulnerable to rocky desertification, but the linkages among soil type, runoff mechanisms, and soil erosion remain unclear. During four hydrological years (2018-2021), soil type, plot-scale hydrological and erosion behavior at the upper, middle, and lower slopes along the dolomite hillslope in karst regions of Southwest China were investigated. The results indicated that along the downward slope direction, the degree of soil development gradually increased, forming a typical soil catena pattern. The soil types along the downward direction on the dolomite hillslope gradually transitioned from Entisol to Inceptisol and to Semi-Alfisol. The Entisol was thin and gravelly, with the highest volume ratio of gravel of 75 %. In contrast, Semi-Alfisol was thick and clayey, with the highest volume ratio of fine soil of 97 %. The surface runoff coefficient of the upper slope was only 2.3 % because of the high water infiltration capacity of shallow and rocky soil, and the runoff generation mode was dominated by discontinuous infiltration-excess runoff occurring on rock outcrop patches. Due to the higher soil water content (mean value of 37 %) and frequently occurring lateral flow, the lower slope exhibited the highest surface runoff coefficient of 21 %, mainly as saturation-excess runoff. Catenary soils and their correspondingly divergent hydrological regimes led to average annual soil losses of 0.4, 0.8, and 2.8 t & BULL;ha  1 & BULL;yr  1 at the upper, middle, and lower slopes, respectively. These results advance the understanding of the relationship between hydrology and erosion on karst hillslopes and provide theoretical support for further rocky desertification control.
英文关键词	Catena Soil -epikarst system Karst ecosystems Soil type Runoff generation Subsurface flow
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001047289200001
WOS关键词	KARST ROCKY DESERTIFICATION ; NORTHWEST GUANGXI ; SOIL PROPERTIES ; RUNOFF ; FLOW ; SEDIMENT ; INFILTRATION ; SLOPES ; WATER ; GEOMORPHOLOGY
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395709
推荐引用方式 GB/T 7714	Meng, Qingmei,Wang, Sheng,Fu, Zhiyong,et al. Spatial pattern of hydrological and erosion behaviour along a dolomite hillslope in Southwest China[J],2023,232.
APA	Meng, Qingmei,Wang, Sheng,Fu, Zhiyong,Deng, Yusong,&Chen, Hongsong.(2023).Spatial pattern of hydrological and erosion behaviour along a dolomite hillslope in Southwest China.CATENA,232.
MLA	Meng, Qingmei,et al."Spatial pattern of hydrological and erosion behaviour along a dolomite hillslope in Southwest China".CATENA 232(2023).