中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 植物研究所
  3. 中国科学院植物研究所
  4. 植被与环境变化国家重点实验室
Nitrogen availability regulates topsoil carbon dynamics after permafrost thaw by altering microbial metabolic efficiency

文献类型：期刊论文

作者Chen, Leiyi; Liu, Li2; Mao, Chao2; Qin, Shuqi2; Wang, Jun2; Liu, Futing2; Blagodatsky, Sergey1,3; Yang, Guibiao2; Zhang, Qiwen2; Zhang, Dianye2
刊名NATURE COMMUNICATIONS
出版日期2018
卷号9
ISSN号2041-1723
DOI10.1038/s41467-018-06232-y
文献子类Article
英文摘要Input of labile carbon may accelerate the decomposition of existing soil organic matter (priming effect), with the priming intensity depending on changes in soil nitrogen availability after permafrost thaw. However, experimental evidence for the linkage between the priming effect and post-thaw nitrogen availability is unavailable. Here we test the hypothesis that elevated nitrogen availability after permafrost collapse inhibits the priming effect by increasing microbial metabolic efficiency based on a combination of thermokarst-induced natural nitrogen gradient and nitrogen addition experiment. We find a negative correlation between the priming intensity and soil total dissolved nitrogen concentration along the thaw sequence. The negative effect is confirmed by the reduced priming effect after nitrogen addition. In contrast to the prevailing view, this nitrogen-regulated priming intensity is independent of extracellular enzyme activities but associated with microbial metabolic efficiency. These findings demonstrate that post-thaw nitrogen availability regulates topsoil carbon dynamics through its modification of microbial metabolic efficiency.
学科主题Multidisciplinary Sciences
出版地LONDON
WOS关键词ORGANIC-MATTER DECOMPOSITION ; FUMIGATION-EXTRACTION METHOD ; TUSSOCK TUNDRA SOIL ; TIBETAN PLATEAU ; BIOMASS CALIBRATION ; COMMUNITY STRUCTURE ; CLIMATE-CHANGE ; ARCTIC TUNDRA ; FOREST SOILS ; STOICHIOMETRY
语种英语
WOS记录号WOS:000445819400002
出版者NATURE PUBLISHING GROUP
资助机构National Key R&D Program of China [2017YFC0503903] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31770557, 31670482] ; Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-SMC049] ; Youth Innovation Promotion Association of Chinese Academy of Science ; Chinese Academy of Sciences-Peking University Pioneer Cooperation Team
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/20362]  
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, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
3.Univ Hohenheim, Inst Agr Sci Trop, Hans Ruthenberg Inst, D-70599 Stuttgart, Germany
4.Russian Acad Sci, Inst Physicochem & Biol Problems Soil Sci, Pushchino 142290, Russia
推荐引用方式
GB/T 7714		 Chen, Leiyi,Liu, Li,Mao, Chao,et al. Nitrogen availability regulates topsoil carbon dynamics after permafrost thaw by altering microbial metabolic efficiency[J]. NATURE COMMUNICATIONS,2018,9.
APA Chen, Leiyi.,Liu, Li.,Mao, Chao.,Qin, Shuqi.,Wang, Jun.,...&Yang, Yuanhe.(2018).Nitrogen availability regulates topsoil carbon dynamics after permafrost thaw by altering microbial metabolic efficiency.NATURE COMMUNICATIONS,9.
MLA Chen, Leiyi,et al."Nitrogen availability regulates topsoil carbon dynamics after permafrost thaw by altering microbial metabolic efficiency".NATURE COMMUNICATIONS 9(2018).

入库方式： OAI收割

来源：植物研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。