干旱区生态环境知识资源中心(Arid): Characteristics of soil water and salt associated with Tamarix ramosissima communities during normal and dry periods in a semi-arid saline environment

Arid

DOI	10.1016/j.catena.2020.104661
	Characteristics of soil water and salt associated with Tamarix ramosissima communities during normal and dry periods in a semi-arid saline environment
	Cao, Qiqi; Yang, Benman; Li, Junran; Wang, Ruoshui; Liu, Tao; Xiao, Huijie
通讯作者	Xiao, HJ
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	193
英文摘要	Tamarisk (Tamarix ramosissima) plants are widely distributed in semi-arid regions with saline soils. In these environments, the survival and sustainability of the Tamarisk plants are critically related to the availability and distribution of soil water and salt. In this study, we analyzed the soil water content (SWC) and soil electrical conductivity (EC) to the depth of 60 cm in natural Tamarisk communities, located in a semi-arid saline region of northwestern China, in July 2016 (a normal period) and July 2017 (a dry period). The results showed that SWC varied from 1.91 to 7.82% and soil EC ranged from 9.65 to 25.38 mS/cm in the 0-60 cm soil layer. Despite the deficiency of precipitation in the study period of 2017, the SWC in all plots was higher at the 20-60 cm depth than that of the normal study period in 2016. Compared to 2016, the soil was also less saline in 2017, representatively by lower soil EC values at the 0-40 cm depth. Additionally, the SWC decreased with Tamarisk density, indicating that Tamarisk plants increase water consumption. The SWC and soil EC both revealed island distribution, with highest level found inside or underneath the Tamarisk plant canopies. Both the SWC and soil EC presented a strong or moderate spatial dependency, and the spatial dependency in soil EC were significantly affected by community composition. Correlations (Pearson's r) showed that there were positive correlations between SWC and soil EC. The results above indicate that Tamarisk communities can ameliorate the semi-arid high saline soil environment, and that the growth and distribution of Tamarisk plants influence the spatio-temporal variability of SWC and soil EC. In addition, the results also demonstrate that the possible appropriate density in the process of constructing Tamarisk plants should be considered in order to achieve the optimal water condition. The study may provide a scientific basis for the ecological restoration and halophytes establishment in the semi-arid saline region of northwestern China and other areas with similar ecologies.
英文关键词	Tamarisk vegetation Soil moisture Soil salinity Water stress Geostatistics
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000538770800011
WOS关键词	DIFFERENT GROUNDWATER DEPTHS ; YELLOW-RIVER ; SPATIOTEMPORAL HETEROGENEITY ; SPATIAL VARIABILITY ; HYDRAULIC LIFT ; CHINENSIS ; PATTERNS ; REGION ; ESTABLISHMENT ; VEGETATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324666
作者单位	[Cao, Qiqi; Yang, Benman; Wang, Ruoshui; Liu, Tao; Xiao, Huijie] Beijing Forestry Univ, Coll Soil & Water Conservat, Qinghua East Rd 35, Beijing 100083, Peoples R China; [Yang, Benman] Guohuan Environm Engn Sichuan Prov, Jinjiang 610011, Peoples R China; [Li, Junran] Univ Tulsa, Dept Geosci, Tulsa, OK 74104 USA
推荐引用方式 GB/T 7714	Cao, Qiqi,Yang, Benman,Li, Junran,et al. Characteristics of soil water and salt associated with Tamarix ramosissima communities during normal and dry periods in a semi-arid saline environment[J]. 北京林业大学,2020,193.
APA	Cao, Qiqi,Yang, Benman,Li, Junran,Wang, Ruoshui,Liu, Tao,&Xiao, Huijie.(2020).Characteristics of soil water and salt associated with Tamarix ramosissima communities during normal and dry periods in a semi-arid saline environment.CATENA,193.
MLA	Cao, Qiqi,et al."Characteristics of soil water and salt associated with Tamarix ramosissima communities during normal and dry periods in a semi-arid saline environment".CATENA 193(2020).