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

doi:10.1073/pnas.2002780117

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 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

	Stimulation of soil respiration by elevated CO2 is enhanced under nitrogen limitation in a decade-long grassland study
	Gao, Qun 11; Wang, Gangsheng 8,9,10; Xue, Kai 7,8,9,10; Yang, Yunfeng 11; Xie, Jianping 6,8,9,10; Yu, Hao 1,8,9,10,15; Bai, Shijie 8,9,10,14; Liu, Feifei 2,8,9,10; He, Zhili 3,8,9,10; Ning, Daliang 8,9,10
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2020-12-29
卷号	117 期号:52 页码:33317-33324
关键词	elevated CO2 nitrogen deposition soil respiration metagenomics Earth ecosystem model
ISSN号	0027-8424
DOI	10.1073/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.
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关键词	SUBTROPICAL FOREST ECOSYSTEMS ; ATMOSPHERIC CO2 ; ORGANIC-MATTER ; MICROBIAL DECOMPOSITION ; CARBON ALLOCATION ; PLANT DIVERSITY ; INNER-MONGOLIA ; RESPONSES ; ROOT ; FERTILIZATION
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
内容类型	期刊论文
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.Liaoning Tech Univ, Coll Environm Sci & Engn, Fuxing 123000, Liaoning, Peoples R China 2.Guangdong Acad Sci, Guangdong Inst Microbiol, Guangdong Prov Key Lab Microbial Culture Collect, Guangzhou 510070, Guangdong, Peoples R China 3.Sun Yat Sen Univ, Environm Microbi Res Ctr, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China 4.Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA 5.Univ Minnesota, Dept Forest Resources, St Paul, MN 55108 USA 6.Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China 7.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 8.Univ Oklahoma, Sch Civil Engn & Environm Sci, Norman, OK 73019 USA 9.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA 10.Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA
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.