干旱区生态环境知识资源中心(Arid): Efficient prediction of profile mean soil water content for hillslope-scale Caragana korshinskii plantation using temporal stability analysis

Arid

DOI	10.1016/j.catena.2021.105491
	Efficient prediction of profile mean soil water content for hillslope-scale Caragana korshinskii plantation using temporal stability analysis
	Wang, Guohui; Chen, Zhixue; Shen, Yuying; Yang, Xianlong
通讯作者	Yang, XL (corresponding author), 768 Jiayuguan West Rd, Lanzhou 730020, Gansu, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	206
英文摘要	Spatio-temporal variability in soil water content (SWC) increases the difficulty in soil water resource management and vegetation construction in arid and semi-arid regions. Our objectives were to investigate the spatial variability and temporal stability of SWC and identify representative locations for reliably predicting the profile mean SWC (MSWC) of a 33-year-old Caragana korshinskii plantation on typical sunny and shady hillslopes on the Loess Plateau, China. The profile SWC (0-180 cm) in three sampling belts and five hillslope positions (upper position, UP; upper-middle position, UMP; middle position, MP; lower-middle position, LMP; lower position, LP) were measured 27 times for both the hillslopes in 2018 and 2019. The mean relative difference (MRD), the standard deviation of the MRD (SDRD), and an index of temporal stability (ITS) were used to identify representative locations of the MSWC. The results indicated that the SWC presented different horizontal but similar vertical change trends in the five hillslope positions. The profile MSWC on the sunny hillslope (8.89%) was lower than that on the shady hillslope (9.44%). The mean Spearman correlation coefficients of the temporal patterns ranged from 0.6 to 0.8 for the five soil layers on both hillslopes. The characteristics of temporal stability differed in both temporal persistence and the representative locations for the five soil layers on the sunny and shady hillslopes. The mean ITS values generally decreased with increasing soil depth. Ultimately, the representative locations for estimating the profile MSWC were determined to be the MP-2 location on the sunny hillslope and the MP-3 location on the shady hillslope based on the MRD, SDRD, and ITS values. The representative locations have the lowest ITS values and represent the MSWC accurately, with root mean square error (RMSE) and mean error (ME) values of less than 1%. In addition, the soil organic carbon, clay, silt, and sand contents greatly affect the spatial and temporal distributions of the soil water at the hillslope scale. Our study provides a rapid and accurate method for determining profile MSWC in C. korshinskii plantations on typical sunny and shady hillslopes and could also support valuable guidance for the rational management of hillslope-scale SWC resources for similar dry regions.
英文关键词	Soil water content Temporal stability Spatial variation Caragana korshinskii Representative location
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000688449100019
WOS关键词	LOESS PLATEAU ; SPATIOTEMPORAL VARIABILITY ; SPATIAL-PATTERNS ; TIME STABILITY ; MOISTURE ; STORAGE ; SURFACE ; FIELD ; REVEGETATION ; STEMFLOW
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362795
作者单位	[Wang, Guohui; Chen, Zhixue; Shen, Yuying; Yang, Xianlong] Lanzhou Univ, Coll Pastoral Agr Sci & Technol,Minist Educ, Engn Res Ctr Grassland Ind,Minist Agr & Rural Aff, State Key Lab Grassland Agroecosyst,Key Lab Grass, Lanzhou 730020, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guohui,Chen, Zhixue,Shen, Yuying,et al. Efficient prediction of profile mean soil water content for hillslope-scale Caragana korshinskii plantation using temporal stability analysis[J]. 兰州大学,2021,206.
APA	Wang, Guohui,Chen, Zhixue,Shen, Yuying,&Yang, Xianlong.(2021).Efficient prediction of profile mean soil water content for hillslope-scale Caragana korshinskii plantation using temporal stability analysis.CATENA,206.
MLA	Wang, Guohui,et al."Efficient prediction of profile mean soil water content for hillslope-scale Caragana korshinskii plantation using temporal stability analysis".CATENA 206(2021).