干旱区生态环境知识资源中心(Arid): Variability analysis and the conservation capacity of soil water storage under different vegetation types in arid regions

Arid

DOI	10.1016/j.catena.2023.107269
	Variability analysis and the conservation capacity of soil water storage under different vegetation types in arid regions
	Chen, Yunfei; Liu, Xiuhua; Ma, Yandong; He, Junqi; He, Yi; Zheng, Ce; Gao, Wande; Ma, Cunping
通讯作者	Liu, XH
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2023
卷号	230
英文摘要	Time-series analysis of soil water storage (SWS) can provide important information on critical hydrological variability related to soil water recharge, retention, and vegetation water consumption, all of which are highly non-linear and non-stationary, making mining and analysis extremely challenging. In this study, Multivariate Empirical Mode Decomposition (MEMD) was used to separate and analyze time-series data on soil moisture, soil temperature, and meteorological factors in three different land types (bare land [BL), grassland [GL), and shrubland [SL)) in the Mu Us Desert, Shaanxi Province, China. Path analysis was then used to reveal the driving force of periodic variability in SWS after decomposition. Using daily SWS data, two new indicators, evapo-transpiration capacity (Ke) and rainfall interception capacity (Kp), were also proposed in order to improve the accuracy of soil water conservation capacity calculation. The results revealed strong time-persistent memory of SWS in all land types, with hydrological periodic variability mainly reflected on a monthly scale (34-45 d). The greatest memory period was observed in SL followed by BL and GL. Subsequent path analysis suggested that dry -wet alternation (R2=0.32-0.48) driven by interactions between precipitation, solar radiation, and saturated vapor pressure were the main causes of SWS variability in the summer. While, freeze-thaw cycles (R2=0.73-0.86) driven by the soil temperature and meteorological factors were the main causes of SWS vari-ability in winter. In the root zone (0-150 cm), the water conservation capacity of BL, GL, and SL was 139.24, 38.24, and 24.76 mm/y, respectively. In addition, the Ke/Kp values and MEMD residual component revealed that SL has greater potential for water conservation than GL. Overall, these findings suggest that in order to conserve local groundwater aquifers, areas of BL require appropriate protection in arid regions. The results of this study provide a basis for future analyses of soil moisture variability and water conservation in arid regions.
英文关键词	Soil water memory Multivariate empirical mode decomposition Variability analysis Water conservation potential Different vegetation cover
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001013504200001
WOS关键词	TEMPORAL STABILITY ; MOISTURE ; DECOMPOSITION ; LAND ; HILLSLOPES ; PATTERNS ; PROGRAM ; SERVICE ; TOOLS
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/2XILL650/395692
推荐引用方式 GB/T 7714	Chen, Yunfei,Liu, Xiuhua,Ma, Yandong,et al. Variability analysis and the conservation capacity of soil water storage under different vegetation types in arid regions[J],2023,230.
APA	Chen, Yunfei.,Liu, Xiuhua.,Ma, Yandong.,He, Junqi.,He, Yi.,...&Ma, Cunping.(2023).Variability analysis and the conservation capacity of soil water storage under different vegetation types in arid regions.CATENA,230.
MLA	Chen, Yunfei,et al."Variability analysis and the conservation capacity of soil water storage under different vegetation types in arid regions".CATENA 230(2023).