气候变化领域集成服务门户(CCPortal): Elevated CO2 and warming cause interactive effects on soil carbon and shifts in carbon use by bacteria

CCPortal

DOI	10.1111/ele.13140
	Elevated CO2 and warming cause interactive effects on soil carbon and shifts in carbon use by bacteria
	Carrillo Y.; Dijkstra F.; LeCain D.; Blumenthal D.; Pendall E.
发表日期	2018
ISSN	1461023X
卷号	21 期号:11
英文摘要	Accurate predictions of soil C feedbacks to climate change depend on an improved understanding of responses of soil C pools and C use by soil microbial groups. We assessed soil and microbial C in a 7-year manipulation of CO2 and warming in a semi-arid grassland. Continuous field isotopic labelling under elevated CO2 further allowed us to study the dynamics of the existing C (Old C) in soil and microbes as affected by warming. Warming reduced soil C under elevated CO2 but had no impact under ambient CO2. Loss of soil C under warming and elevated CO2 was attributed to increased proportional loss of Old C. Warming also reduced the proportion of Old C in microbes, specifically the bacteria, but not the fungi. These findings highlight that warming impacts are C pool and microbial taxa dependent and demonstrate interactive effects of warming and atmospheric CO2 on soil C. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	Bacteria; carbon; climate change; elevated CO2; microbial C use; microbial communities; microbial function; soil; warming
语种	英语
scopus关键词	bacterium; carbon dioxide; climate change; environmental effect; global warming; microbial activity; microbial community; prediction; semiarid region; soil carbon; soil microorganism; Fungi; carbon; carbon dioxide; bacterium; climate change; ecosystem; growth, development and aging; microbiology; soil; Bacteria; Carbon; Carbon Dioxide; Climate Change; Ecosystem; Soil; Soil Microbiology
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121225
作者单位	Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2570, Australia; Centre for Carbon, Water and Food, School of Life and Environmental Sciences, The University of Sydney, Camden, NSW 2570, Australia; Rangeland Resources & Systems Research Unit, Agricultural Research Service, United States Department of Agriculture, Fort Collins, CO 80526, United States
推荐引用方式 GB/T 7714	Carrillo Y.,Dijkstra F.,LeCain D.,et al. Elevated CO2 and warming cause interactive effects on soil carbon and shifts in carbon use by bacteria[J],2018,21(11).
APA	Carrillo Y.,Dijkstra F.,LeCain D.,Blumenthal D.,&Pendall E..(2018).Elevated CO2 and warming cause interactive effects on soil carbon and shifts in carbon use by bacteria.Ecology Letters,21(11).
MLA	Carrillo Y.,et al."Elevated CO2 and warming cause interactive effects on soil carbon and shifts in carbon use by bacteria".Ecology Letters 21.11(2018).