干旱区生态环境知识资源中心(Arid): Effect of sand burial on the subcritical water repellency of a dominant moss crust in a revegetated area of the Tengger Desert, Northern China

Arid

DOI	10.2478/johh-2020-0025
	Effect of sand burial on the subcritical water repellency of a dominant moss crust in a revegetated area of the Tengger Desert, Northern China
	Jia, Rongliang; Gao, Yanhong; Liu, Lichao; Yang, Haotian; Zhao, Yang
通讯作者	Jia, RL
来源期刊	JOURNAL OF HYDROLOGY AND HYDROMECHANICS
EISSN	1338-4333
出版年	2020
卷号	68 期号:3 页码:279-284
英文摘要	Sand burial is a ubiquitous disturbance that influences the ecological and hydrological properties of moss crusts in many sandy desert areas. There is little available information regarding the effect of sand burial on the water repellency (WR) of moss crusts in desert areas. Therefore, this study evaluated the effects of sand burial (sand depths of 0 (control), 0.5, 1, 2, 4 and 10 mm) followed by three simulated precipitation regimes (through applying 4 and 6 mm, 2 and 3 mm, and 1 and 1.5 mm of distilled water at 8-day intervals in spring and autumn, respectively) on the WR of a widespread moss crust dominated by Blyum argenteum Hedw. in a revegetated area of the Tengger Desert, China. The results showed moss crust WR remained subcritical during the whole experiment, and that it considerably decreased immediately after sand burial, even though the values of WR were significantly higher in autumn than those in spring under the same treatment (p < 0.05). Furthermore, the depth threshold (TD) values for sand burials that reduced WR to zero were 1 and 2 mm in spring and autumn, respectively. After a recovery period of nearly one-season (72 days), the WR of the moss crust significantly increased (p < 0.05). In addition, sand burial had two separate effects on moss crust WR. Specifically, shallower sand burial (burial depth less than 0.5 mm) increased moss crust WR, whereas deeper sand burial (burial depth exceeds 0.5 mm) decreased it. The TD values also significantly increased to 2 and 4 mm in spring and autumn, respectively. These findings about the effects of sand burial on moss crust WR provide additional information that can be used to better understand the influence of sand burial on moss crust colonization and maintenance in arid sand-burial-stressed ecosystems, and to help explain why there are some contrasting viewpoints on biocrust WR.
英文关键词	Water repellency Sand burial Moss crust Precipitation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000560031900008
WOS关键词	BIOLOGICAL SOIL CRUSTS ; MICROBIOTIC CRUSTS ; HYDROPHOBICITY ; VEGETATION ; BIOCRUSTS ; COASTAL ; PLANTS
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325645
作者单位	[Jia, Rongliang; Gao, Yanhong; Liu, Lichao; Yang, Haotian; Zhao, Yang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, 320 Donggang West Rd, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Jia, Rongliang,Gao, Yanhong,Liu, Lichao,et al. Effect of sand burial on the subcritical water repellency of a dominant moss crust in a revegetated area of the Tengger Desert, Northern China[J],2020,68(3):279-284.
APA	Jia, Rongliang,Gao, Yanhong,Liu, Lichao,Yang, Haotian,&Zhao, Yang.(2020).Effect of sand burial on the subcritical water repellency of a dominant moss crust in a revegetated area of the Tengger Desert, Northern China.JOURNAL OF HYDROLOGY AND HYDROMECHANICS,68(3),279-284.
MLA	Jia, Rongliang,et al."Effect of sand burial on the subcritical water repellency of a dominant moss crust in a revegetated area of the Tengger Desert, Northern China".JOURNAL OF HYDROLOGY AND HYDROMECHANICS 68.3(2020):279-284.