干旱区生态环境知识资源中心(Arid): Spatio-temporal variations of soil water content and salinity around individual Tamarix ramosissima in a semi-arid saline region of the upper Yellow River, Northwest China

Arid

	Spatio-temporal variations of soil water content and salinity around individual Tamarix ramosissima in a semi-arid saline region of the upper Yellow River, Northwest China
	Yang Benman; Wang Ruoshui; Xiao Huijie; Cao Qiqi; Liu Tao
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2018
卷号	10 期号:1 页码:101-114
英文摘要	Ecological restoration by Tamarix plants on semi-arid saline lands affects the accumulation, distribution patterns and related mechanisms of soil water content and salinity. In this study, spatio-temporal variations of soil water content and salinity around natural individual Tamarix ramosissima Ledeb. were invetigated in a semi-arid saline region of the upper Yellow River, Northwest China. Specifically, soil water content, electrical conductivity (ECe), sodium adsorption ratio (SARe), and salt ions (including Na~+, K~+, Ca~(2+), Mg~(2+) and SO_4~(2-)) were measured at different soil depths and at different distances from the trunk of T. ramosissima in May, July, and September 2016. The soil water content at the 20-80 cm depth was significantly lower in July and September than in May, indicating that T. ramosissima plants absorb a large amount of water through the roots during the growing period, leading to the decreasing of soil water content in the deep soil layer. At the 0-20 cm depth, there was a salt island effect around individual T. ramosissima, and the ECe differed significantly inside and outside the canopy of T. ramosissima in May and July. Salt bioaccumulation and stemflow were two major contributing factors to this difference. The SARe at the 0-20 cm depth was significantly different inside and outside the canopy of T. ramosissima in the three sampling months. The values of SARe at the 60-80 cm depth in May and July were significantly higher than those at the 0-60 cm depth and higher than that at the corresponding depth in September. The distribution of Na~+ in the soil was similar to that of the SARe, while the concentrations of K~+, Ca~(2+), and Mg~(2+) showed significant differences among the sampling months and soil depths. Both season and soil depth had highly significant effects on soil water content, ECe and SARe, whereas distance from the trunk of T. ramosissima only significantly affected ECe. Based on these results, we recommend co-planting of shallow-rooted salt-tolerant species near the Tamarix plants and avoiding planting herbaceous plants inside the canopy of T. ramosissima for afforestation in this semi-arid saline region. The results of this study may provide a reference for appropriate restoration in the semi-arid saline regions of the upper Yellow River.
英文关键词	Tamarix ramosissima soil water content electrical conductivity sodium adsorption ratio saline soil Yellow River
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6153601
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335903
作者单位	Yang Benman, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.; Wang Ruoshui, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.; Xiao Huijie, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.; Cao Qiqi, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.; Liu Tao, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.
推荐引用方式 GB/T 7714	Yang Benman,Wang Ruoshui,Xiao Huijie,et al. Spatio-temporal variations of soil water content and salinity around individual Tamarix ramosissima in a semi-arid saline region of the upper Yellow River, Northwest China[J],2018,10(1):101-114.
APA	Yang Benman,Wang Ruoshui,Xiao Huijie,Cao Qiqi,&Liu Tao.(2018).Spatio-temporal variations of soil water content and salinity around individual Tamarix ramosissima in a semi-arid saline region of the upper Yellow River, Northwest China.Journal of Arid Land,10(1),101-114.
MLA	Yang Benman,et al."Spatio-temporal variations of soil water content and salinity around individual Tamarix ramosissima in a semi-arid saline region of the upper Yellow River, Northwest China".Journal of Arid Land 10.1(2018):101-114.