The effects of increased snow depth on plant and microbial biomass and community composition along a precipitation gradient in temperate steppes

doi:10.1016/j.soilbio.2018.06.004

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	The effects of increased snow depth on plant and microbial biomass and community composition along a precipitation gradient in temperate steppes
	Liu, Weixing ; Allison, Steven D.; Li, Ping 1; Wang, Jing 1; Chen, Dima ; Wang, Zhenhua 1; Yang, Sen 1; Diao, Liwei ; Wang, Bin 1; Liu, Lingli 1
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2018
卷号	124 页码:134-141
关键词	Microbial biomass Microbial community Plant biomass Plant community Plant-microbe relationship Sensitivity
ISSN号	0038-0717
DOI	10.1016/j.soilbio.2018.06.004
文献子类	Article
英文摘要	Shift in precipitation regime could greatly alter plant and microbial activity, and thus the contemporary and future ecosystem dynamics in grasslands. We investigated how changes in snow depth affect plants, microbes and their relationships after 10 consecutive years of snow treatments in different steppes. We selected 8 snow fences along a mean annual precipitation (MAP) gradient from 225 to 375 mm in Inner Mongolia. For each snow fence, study plots were set up at 7 transects with different levels of snow depth. We found that ecosystem properties, including soil moisture, the biomass and nitrogen (N) pools of microbes and plants, the fungi: bacteria ratio and the grass: forb ratio, increased with increasing snow depth at the drier sites with lower MAP, but not at the wetter sites with higher MAP. At any given site, the sensitivity of these ecosystem properties to changes in snow depth was determined by the slopes of these variables against snow depth. The results showed that the sensitivity of these ecosystem properties to changes in snow depth decreased linearly with increase in MAP levels. In addition, we also found that increased snow depth shifted the relationship between microbial and plant biomass from positive to negative. Our work reveals the importance of snow water in regulating plant and microbial processes in temperate steppes, especially under lower MAP conditions. The greater plant and microbial biomass and the shift of community toward greater fungi: bacteria and grass: forb ratio imply that increased snowmelt input alleviated water limitation in temperate steppes and altered plant and microbial communities. Our study helps to better predict that how changes in winter precipitation could affect the biomass and composition of plants and soil microbes in grasslands.
学科主题	Soil Science
出版地	OXFORD
WOS关键词	NORTHERN HARDWOOD FOREST ; CLIMATE-CHANGE ; NITROGEN MINERALIZATION ; FUNGAL COMMUNITIES ; INNER-MONGOLIA ; TIME-SCALES ; SOIL ; CARBON ; TUNDRA ; IMPACTS
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000444358200016
资助机构	Chinese National Key Development Program for Basic Research [2017YFC0503900, 2014CB954003] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31522011, 31770530, 31370488] ; Chinese National 1000 Young Talents Program ; US NSF Ecosystem Studies ProgramNational Science Foundation (NSF) [DEB-1457160]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/20681]
专题	植被与环境变化国家重点实验室
作者单位	1.Allison, Steven D.] Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA 2.Univ Chinese Acad Sci, Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Allison, Steven D.] Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92697 USA
推荐引用方式 GB/T 7714	Liu, Weixing,Allison, Steven D.,Li, Ping,et al. The effects of increased snow depth on plant and microbial biomass and community composition along a precipitation gradient in temperate steppes[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,124:134-141.
APA	Liu, Weixing.,Allison, Steven D..,Li, Ping.,Wang, Jing.,Chen, Dima.,...&Liu, Lingli.(2018).The effects of increased snow depth on plant and microbial biomass and community composition along a precipitation gradient in temperate steppes.SOIL BIOLOGY & BIOCHEMISTRY,124,134-141.
MLA	Liu, Weixing,et al."The effects of increased snow depth on plant and microbial biomass and community composition along a precipitation gradient in temperate steppes".SOIL BIOLOGY & BIOCHEMISTRY 124(2018):134-141.