干旱区生态环境知识资源中心(Arid): Factors dominating the horizontal and vertical variability of soil water vary with climate and plant type in loess deposits

Arid

DOI	10.1016/j.scitotenv.2021.152172
	Factors dominating the horizontal and vertical variability of soil water vary with climate and plant type in loess deposits
	Huang, Yanan; Li, Bingbing; Biswas, Asim; Li, Zhi
通讯作者	Li, Z (corresponding author)，Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	811
英文摘要	Identifying the variability and predominant factors affecting soil water (SW) is essential in regions with thick vadose zones and deep-rooted plants. This information is needed to clarify the balance between water availability and plant water demand. We collected 9263 soil samples from 128 profiles of 7-25 m deep soil under different climates (arid, semiarid and subhumid), soil textures and plant types (shallow or deep roots) in China's Loess Plateau. The factors dominating the horizontal and vertical variability of SW were identified using a multimodel inference approach and stepwise regression analysis. Horizontally, the mean water content and storage increased while the water deficits decreased from the northwest to the southeast. Vertically, mean water content and storage are highest in the relatively stable layer, followed by rapidly changing layers and active layers. Plant age and soil clay content dominate the horizontally varied SW, while plant age and normalized difference vegetation index (NDVI) dominate the vertical variability of SW. However, the dominant factors appeared to differ with climate and plant type. It was determined that for climate, soil clay content and plant age in arid regions, precipitation and plant age in semiarid regions, NDVI and plant age in subhumid regions were important factors. For plants, the dominant factors are NDVI and precipitation under shallow-rooted plants; however, NDVI and plant age were dominant under deep-rooted plants. The dominance of plant age highlighted the impact of vegetation patterns on SW, especially for deep-rooted plants, which should be taken into account when managing water resources and ecosystem rehabilitation in degraded regions.
英文关键词	Soil water Spatial variability Deep-rooted plant Dominant factor Multimodel inference method
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000740221500017
WOS关键词	GROUNDWATER RECHARGE ; APPLE-TREES ; MAGNETIC-SUSCEPTIBILITY ; VEGETATION RESTORATION ; TEMPORAL STABILITY ; GREEN PROGRAM ; LAND-COVER ; MOISTURE ; PLATEAU ; PRECIPITATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376893
作者单位	[Huang, Yanan; Li, Bingbing; Li, Zhi] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; [Biswas, Asim] Univ Guelph, Sch Environm Sci, Guelph, ON N1G 2W1, Canada
推荐引用方式 GB/T 7714	Huang, Yanan,Li, Bingbing,Biswas, Asim,et al. Factors dominating the horizontal and vertical variability of soil water vary with climate and plant type in loess deposits[J],2022,811.
APA	Huang, Yanan,Li, Bingbing,Biswas, Asim,&Li, Zhi.(2022).Factors dominating the horizontal and vertical variability of soil water vary with climate and plant type in loess deposits.SCIENCE OF THE TOTAL ENVIRONMENT,811.
MLA	Huang, Yanan,et al."Factors dominating the horizontal and vertical variability of soil water vary with climate and plant type in loess deposits".SCIENCE OF THE TOTAL ENVIRONMENT 811(2022).