Occurrence of subsurface lateral flow in the Shale Hills Catchment indicated by a soil water mass balance method

doi:10.1111/ejss.12701

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Occurrence of subsurface lateral flow in the Shale Hills Catchment indicated by a soil water mass balance method
	Fan, B.2; Zhang, J.2; Lin, H.1,2; Guo, L.2
刊名	EUROPEAN JOURNAL OF SOIL SCIENCE
	2018-09-01
卷号	69 期号:5 页码:771-786
DOI	10.1111/ejss.12701
文献子类	Article
英文摘要	Subsurface lateral flow (SLF) contributes substantially to hillslope runoff. However, because of the lack of appropriate methods, field investigation of SLF at the hillslope and catchment scales has been limited. Recently, high-frequency soil moisture monitoring has been tested to characterize SLF. This study presented a simple approach to determine SLF based on soil water mass balance and compared this method with an established approach that used the depth-specific soil moisture response time to precipitation to identify preferential flow. The new method defined the occurrence of SLF when the increase in soil water storage was greater than the accumulated quantity of effective precipitation during a rain event. We applied this method to a 10-minute resolution soil moisture dataset collected over 3years from nine soil profiles along a concave hillslope. We found that (i) SLF frequency derived by the proposed method matched well with preferential flow frequency obtained by the established method (r>0.9), (ii) precipitation and initial soil wetness together controlled the generation of SLF, precipitation intensity determined whether or not the hillslope produced SLF and the quantity of precipitation governed the spatial extent of SLF, and (iii) topographic and small-scale soil features led to spatially different frequencies of SLF during small storms. Identifying SLF from a soil moisture time series over an entire rain event complements the established method based on soil moisture dynamics at the beginning of an event. Applying both methods creates the potential to measure SLF frequency and vertical preferential flow frequency, respectively. Soil moisture sensor networks have improved the large-scale investigation of such preferential flows. Highlights How can the occurrence of subsurface lateral flow ( SLF) be detected by soil moisture time series? A simple approach is proposed to detect SLF in a forested hillslope using soil water mass balance. Three- year SLF frequency obtained by the new method agreed with that from an established method. Rain, topography and soil attributes control the generation and spatial distribution of SLF.
WOS关键词	PREFERENTIAL FLOW ; CRITICAL ZONE ; MACROPORES ; FREQUENCY ; DYNAMICS ; HYDROLOGY ; NETWORK ; MODEL ; FIELD
WOS研究方向	Agriculture
语种	英语
WOS记录号	WOS:000443387700002
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5342]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, 97 Yanxiang Rd, Xian 710061, Shaanxi, Peoples R China 2.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA
推荐引用方式 GB/T 7714	Fan, B.,Zhang, J.,Lin, H.,et al. Occurrence of subsurface lateral flow in the Shale Hills Catchment indicated by a soil water mass balance method[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2018,69(5):771-786.
APA	Fan, B.,Zhang, J.,Lin, H.,&Guo, L..(2018).Occurrence of subsurface lateral flow in the Shale Hills Catchment indicated by a soil water mass balance method.EUROPEAN JOURNAL OF SOIL SCIENCE,69(5),771-786.
MLA	Fan, B.,et al."Occurrence of subsurface lateral flow in the Shale Hills Catchment indicated by a soil water mass balance method".EUROPEAN JOURNAL OF SOIL SCIENCE 69.5(2018):771-786.