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

文献类型：期刊论文

作者Liu, Weixing; Allison, Steven D.; Li, Ping3; Wang, Jing3; Chen, Dima; Wang, Zhenhua3; Yang, Sen3; Diao, Liwei; Wang, Bin3; Liu, Lingli3
刊名SOIL BIOLOGY & BIOCHEMISTRY
出版日期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
DOI10.1016/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
WOS记录号WOS:000444358200016
出版者PERGAMON-ELSEVIER SCIENCE LTD
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]
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.Univ Chinese Acad Sci, Yuquan Rd, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
3.Allison, Steven D.] Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA
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.

入库方式： OAI收割

来源：植物研究所

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