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Stimulation of soil respiration by elevated CO2 is enhanced under nitrogen limitation in a decade-long grassland study

文献类型：期刊论文

作者Gao, Qun1; Wang, Gangsheng2,3,4; Xue, Kai2,3,4,5; Yang, Yunfeng1; Xie, Jianping2,3,4,6; Yu, Hao2,3,4,7,8; Bai, Shijie2,3,4,9; Liu, Feifei2,3,4,10; He, Zhili2,3,4,11; Ning, Daliang2,3,4
刊名PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
出版日期2020-12-29
卷号117期号:52页码:33317-33324
ISSN号0027-8424
关键词elevated CO2 nitrogen deposition soil respiration metagenomics Earth ecosystem model
DOI10.1073/pnas.2002780117
英文摘要Whether and how CO2 and nitrogen (N) availability interact to influence carbon (C) cycling processes such as soil respiration remains a question of considerable uncertainty in projecting future C-climate feedbacks, which are strongly influenced by multiple global change drivers, including elevated atmospheric CO2 concentrations (eCO(2)) and increased N deposition. However, because decades of research on the responses of ecosystems to eCO(2) and N enrichment have been done largely independently, their interactive effects on soil respiratory CO2 efflux remain unresolved. Here, we show that in a multifactor free-air CO2 enrichment experiment, BioCON (Biodiversity, CO2, and N deposition) in Minnesota, the positive response of soil respiration to eCO(2) gradually strengthened at ambient (low) N supply but not enriched (high) N supply for the 12-y experimental period from 1998 to 2009. In contrast to earlier years, eCO(2) stimulated soil respiration twice as much at low than at high N supply from 2006 to 2009. In parallel, microbial C degradation genes were significantly boosted by eCO(2) at low but not high N supply. Incorporating those functional genes into a coupled C-N ecosystem model reduced model parameter uncertainty and improved the projections of the effects of different CO2 and N levels on soil respiration. If our observed results generalize to other ecosystems, they imply widely positive effects of eCO(2) on soil respiration even in infertile systems.
WOS关键词SUBTROPICAL FOREST ECOSYSTEMS ; ATMOSPHERIC CO2 ; ORGANIC-MATTER ; MICROBIAL DECOMPOSITION ; CARBON ALLOCATION ; PLANT DIVERSITY ; INNER-MONGOLIA ; RESPONSES ; ROOT ; FERTILIZATION
资助项目National Science Foundation of China[41825016] ; Second Tibetan Plateau Scientific Expedition and Research program[2019QZKK0503] ; special fund of the State Key Joint Laboratory of Environment Simulation and Pollution Control[19L01ESPC] ; US Department of Agriculture (USDA) through NSF-USDA Microbial Observatories Program[2007-35319-18305] ; Long-Term Ecological Research (LTER)[DEB-0620652] ; Long-Term Ecological Research (LTER)[DEB-1234162] ; Long-Term Ecological Research (LTER)[DEB-1831944] ; Long-Term Research in Environmental Biology (LTREB)[DEB-1242531] ; Long-Term Research in Environmental Biology (LTREB)[DEB-1753859] ; Biological Integration Institutes[NSF-DBI-2021898] ; Ecosystem Sciences[DEB-1120064] ; Biocomplexity grant[DEB-0322057] ; US Department of Energy Programs for Ecosystem Research grant[DE-FG0296ER62291] ; University of Minnesota ; USDA through the NSF-USDA Microbial Observatories Program[2007-35319-18305] ; US Department of Energy, Office of Science, Genomic Science Program[DE-SC0004601] ; US Department of Energy, Office of Science, Genomic Science Program[DE-SC0010715] ; US Department of Energy, Office of Science, Genomic Science Program[DE-SC0014079] ; US Department of Energy, Office of Science, Genomic Science Program[DE-SC0016247] ; US Department of Energy, Office of Science, Genomic Science Program[DE-SC0020163] ; Office of the Vice President for Research at the University of Oklahoma
WOS研究方向Science & Technology - Other Topics
语种英语
出版者NATL ACAD SCIENCES
WOS记录号WOS:000604551600065
资助机构National Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research program ; special fund of the State Key Joint Laboratory of Environment Simulation and Pollution Control ; US Department of Agriculture (USDA) through NSF-USDA Microbial Observatories Program ; Long-Term Ecological Research (LTER) ; Long-Term Research in Environmental Biology (LTREB) ; Biological Integration Institutes ; Ecosystem Sciences ; Biocomplexity grant ; US Department of Energy Programs for Ecosystem Research grant ; University of Minnesota ; USDA through the NSF-USDA Microbial Observatories Program ; US Department of Energy, Office of Science, Genomic Science Program ; Office of the Vice President for Research at the University of Oklahoma
源URL[http://ir.idsse.ac.cn/handle/183446/8406]  
专题深海科学研究部_深海生物学研究室_海洋病毒与分子生物学研究组
通讯作者Yang, Yunfeng; Zhou, Jizhong
作者单位1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
2.Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA
3.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
4.Univ Oklahoma, Sch Civil Engn & Environm Sci, Norman, OK 73019 USA
5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
6.Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China
7.Liaoning Tech Univ, Coll Environm Sci & Engn, Fuxing 123000, Liaoning, Peoples R China
8.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
9.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya 572000, Hainan, Peoples R China
10.Guangdong Acad Sci, Guangdong Inst Microbiol, Guangdong Prov Key Lab Microbial Culture Collect, Guangzhou 510070, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Gao, Qun,Wang, Gangsheng,Xue, Kai,et al. Stimulation of soil respiration by elevated CO2 is enhanced under nitrogen limitation in a decade-long grassland study[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(52):33317-33324.
APA Gao, Qun.,Wang, Gangsheng.,Xue, Kai.,Yang, Yunfeng.,Xie, Jianping.,...&Zhou, Jizhong.(2020).Stimulation of soil respiration by elevated CO2 is enhanced under nitrogen limitation in a decade-long grassland study.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(52),33317-33324.
MLA Gao, Qun,et al."Stimulation of soil respiration by elevated CO2 is enhanced under nitrogen limitation in a decade-long grassland study".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.52(2020):33317-33324.

入库方式： OAI收割

来源：深海科学与工程研究所

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