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DOI	10.1016/j.geoderma.2021.115505
	Effect of snow cover on water content, carbon and nutrient availability, and microbial biomass in complexes of biological soil crusts and subcrust soil in the desert
	Hui, Rong; Zhao, Ruiming; Liu, Lichao; Li, Xinrong
通讯作者	Hui, R (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Donggang West Rd 320, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2022
ISSN	0016-7061
EISSN	1872-6259
卷号	406
英文摘要	Winter snowfall is an important water resource for organisms in desert ecosystems. Changing snow depth is expected to exert a potential influence on growth and ecological functions of biological soil crusts (BSCs), which are known as a dominant functional vegetation unit of desert ecosystems. However, limited attention has been paid to this potential effect on BSCs. A field simulation experiment was conducted to measure the water content, nutrient concentrations (organic carbon; total nitrogen; available nitrogen; available phosphorus; available potassium; ammonium nitrate; and nitrate nitrogen), and microbial biomass (carbon, nitrogen, and phosphorus) in samples (cyanobacterial and lichen crusts and subcrust soil) under snow cover of different depths after a four year experiment (from October 2013 to April 2017) in the Gurbantunggut Desert. The results showed that water content increased with increasing snow depth (P < 0.05). Snow removal and snow cover reduction decreased nutrient and microbial biomass concentrations in both biocrust types (P < 0.05). The concentrations of most measured nutrients and microbial biomass decreased significantly when snow depth was increased to twice ambient conditions (P < 0.05). Moreover, the concentrations of nutrients and microbial biomass were significantly influenced by snow depth (P < 0.05), crust type (P < 0.001), and their interaction (P < 0.05). The results demonstrated that variation in snow depth adversely affect the carbon and nutrient availability and microbial biomass in BSCs. Such changes might lead to a cascading effect in species composition and function of BSC communities in arid regions.
关键词	BACTERIAL COMMUNITY STRUCTURE GURBANTUNGGUT DESERT DISTRIBUTION PATTERNS SEASONAL DYNAMICS ORGANIC-MATTER TENGGER DESERT NITROGEN PRECIPITATION DEPTH PLANT
英文关键词	Biological soil crusts (BSCs); Desert ecosystem; Freeze-thaw cycle; Snow depth; Microbial biomass
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000708893700003
来源期刊	GEODERMA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253975
作者单位	[Hui, Rong; Liu, Lichao; Li, Xinrong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Donggang West Rd 320, Lanzhou 730000, Gansu, Peoples R China; [Zhao, Ruiming] Gansu Agr Univ, Coll Agron, 1 Yingmen Village, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Hui, Rong,Zhao, Ruiming,Liu, Lichao,et al. Effect of snow cover on water content, carbon and nutrient availability, and microbial biomass in complexes of biological soil crusts and subcrust soil in the desert[J]. 中国科学院西北生态环境资源研究院,2022,406.
APA	Hui, Rong,Zhao, Ruiming,Liu, Lichao,&Li, Xinrong.(2022).Effect of snow cover on water content, carbon and nutrient availability, and microbial biomass in complexes of biological soil crusts and subcrust soil in the desert.GEODERMA,406.
MLA	Hui, Rong,et al."Effect of snow cover on water content, carbon and nutrient availability, and microbial biomass in complexes of biological soil crusts and subcrust soil in the desert".GEODERMA 406(2022).