Arid
DOI10.1097/SS.0000000000000084
Water Repellency of Biological Soil Crusts and Influencing Factors on the Southeast Fringe of the Tengger Desert, North-Central China
Yang, Haotian1; Liu, Lichao1; Li, Xinrong1; Wei, Yongping2; Li, Xiaojun1; Jia, Rongliang1
通讯作者Yang, Haotian
来源期刊SOIL SCIENCE
ISSN0038-075X
EISSN1538-9243
出版年2014
卷号179期号:9页码:424-432
英文摘要

Biological soil crusts (BSC) have key roles in hydrological and ecological processes in arid desert areas. Water repellency (WR) of BSC is an important property because it modifies the local hydrological regimes and affects ecosystemfunctions. However, the variations ofWR in different types of BSC and the temporal variations under field condition are relatively unknown. Actual WR of four types of BSC and mobile sand were observed sequentially after heavy rainfall using the water drop penetration time test. The development of BSC on the surface of stabilized sand dune markedly promotes WR. The WR of four types of BSC variation across time was influenced by environmental factors under field conditions. The WR increased as soil moisture content or air relative humidity increased up to a level above which WR decreased. However, the peak levels varied between the different types of crusts. For surface temperature of BSC and air temperature, the WR of the four types of BSC decreased with increasing temperature. Our results demonstrate that the WR of BSC in arid desert ecosystems depends greatly on the developmental stages of the crusts, as well as environmental factors, such as antecedent topsoil moisture conditions, relative humidity, surface temperature, and air temperature.


英文关键词Water repellency biological soil crusts water drop penetration time test Tengger Desert
类型Article
语种英语
国家Peoples R China ; Australia
收录类别SCI-E
WOS记录号WOS:000351670600003
WOS关键词MICROBIOTIC CRUSTS ; SANDY SOIL ; INFILTRATION ; RUNOFF ; EROSION ; DUNES ; TEMPERATURE ; VEGETATION ; HYDROPHOBICITY ; ECOSYSTEMS
WOS类目Soil Science
WOS研究方向Agriculture
来源机构中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/185005
作者单位1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Shapotou Desert Res & Expt Stn, Lanzhou, Peoples R China;
2.Univ Melbourne, Australian China Ctr Water Resources, Melbourne, Vic, Australia
推荐引用方式
GB/T 7714
Yang, Haotian,Liu, Lichao,Li, Xinrong,et al. Water Repellency of Biological Soil Crusts and Influencing Factors on the Southeast Fringe of the Tengger Desert, North-Central China[J]. 中国科学院西北生态环境资源研究院,2014,179(9):424-432.
APA Yang, Haotian,Liu, Lichao,Li, Xinrong,Wei, Yongping,Li, Xiaojun,&Jia, Rongliang.(2014).Water Repellency of Biological Soil Crusts and Influencing Factors on the Southeast Fringe of the Tengger Desert, North-Central China.SOIL SCIENCE,179(9),424-432.
MLA Yang, Haotian,et al."Water Repellency of Biological Soil Crusts and Influencing Factors on the Southeast Fringe of the Tengger Desert, North-Central China".SOIL SCIENCE 179.9(2014):424-432.
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