干旱区生态环境知识资源中心(Arid): Fine roots determine soil infiltration potential than soil water content in semi-arid grassland soils

Arid

DOI	10.1016/j.jhydrol.2019.124023
	Fine roots determine soil infiltration potential than soil water content in semi-arid grassland soils
	Cui, Zeng 1,2; Wu, Gao-Lin 1,2,3; Huang, Ze 1; Liu, Yu 1,2
通讯作者	Wu, Gao-Lin
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	578
英文摘要	Soil water is the key limiting factor for achieving sustainable revegetation. Soil infiltration rate plays an important role in determining the inputs from precipitation, which is important for the plant growth and groundwater recharge in semi-arid regions. Soil infiltration rate is generally influenced by belowground biomass (BGB), soil water content (SWC) and other soil properties (total soil porosity, soil mean weight diameter and soil organic carbon). The aim of this study is to understand the effects of plant roots, SWC and other soil properties on soil infiltration rate, and to identify the main factor affecting soil infiltration rate. This study investigated the total soil porosity (TP), soil mean weight diameter (MWD), soil organic carbon (SOC), SWC and plant roots of five grasslands (Bromus inermis, Trifolium repens, Panicum virgatum, Medicago sativa and Miscanthus sinensis). An automatic measurement system of point source device was used to quantify the soil infiltration rate. Results showed that SWC significantly affected the initial infiltration rate (P < 0.05), but plant roots gradually became the main factor affecting soil infiltration rate as the increasing infiltration time. The percentage of root volume (PV) of 0-2 mm was positively correlated with infiltration rate, while the PV of > 4.5 mm was negatively correlated with infiltration rate. Our results indicated that fine roots could increase soil organic matters and form soil pores, thus more determining the potential of soil infiltration than soil water content during the short-term vegetation restoration in semi-arid regions.
英文关键词	Plant root diameter Soil infiltration Soil water content Infiltration process Semiarid grassland
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000497250200011
WOS关键词	LAND-USE ; ORGANIC-MATTER ; LOESS PLATEAU ; VARIABILITY ; VEGETATION ; CAPACITY ; RATES
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
EI主题词	2019-11-01
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310689
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China; 2.Chinese Acad Sci & Minist Water Resource, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Cui, Zeng,Wu, Gao-Lin,Huang, Ze,et al. Fine roots determine soil infiltration potential than soil water content in semi-arid grassland soils[J]. 西北农林科技大学,2019,578.
APA	Cui, Zeng,Wu, Gao-Lin,Huang, Ze,&Liu, Yu.(2019).Fine roots determine soil infiltration potential than soil water content in semi-arid grassland soils.JOURNAL OF HYDROLOGY,578.
MLA	Cui, Zeng,et al."Fine roots determine soil infiltration potential than soil water content in semi-arid grassland soils".JOURNAL OF HYDROLOGY 578(2019).