气候变化领域集成服务门户(CCPortal): Root-derived inputs are major contributors to soil carbon in temperate forests, but vary by mycorrhizal type

CCPortal

DOI	10.1111/ele.13651
	Root-derived inputs are major contributors to soil carbon in temperate forests, but vary by mycorrhizal type
	Keller A.B.; Brzostek E.R.; Craig M.E.; Fisher J.B.; Phillips R.P.
发表日期	2021
ISSN	1461023X
起始页码	626
结束页码	635
卷号	24 期号:4
英文摘要	Roots promote the formation of slow-cycling soil carbon (C), yet we have a limited understanding of the magnitude and controls on this flux. We hypothesised arbuscular mycorrhizal (AM)- and ectomycorrhizal (ECM)-associated trees would exhibit differences in root-derived C accumulation in the soil, and that much of this C would be transferred into mineral-associated pools. We installed δ13C-enriched ingrowth cores across mycorrhizal gradients in six Eastern U.S. forests (n = 54 plots). Overall, root-derived C was 54% greater in AM versus ECM-dominated plots. This resulted in nearly twice as much root-derived C in putatively slow-cycling mineral-associated pools in AM compared to ECM plots. Given that our estimates of root-derived inputs were often equal to or greater than leaf litter inputs, our results suggest that variation in root-derived soil C accumulation due to tree mycorrhizal dominance may be a key control of soil C dynamics in forests. © 2021 John Wiley & Sons Ltd
关键词	Belowground carbon allocation mycorrhizal association rhizodeposition root exudation
英文关键词	arbuscular mycorrhiza; ectomycorrhiza; leaf litter; mycorrhiza; soil carbon; soil nutrient; temperate forest; carbon; nitrogen; forest; microbiology; mycorrhiza; plant root; soil; tree; Carbon; Forests; Mycorrhizae; Nitrogen; Plant Roots; Soil; Soil Microbiology; Trees
语种	英语
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/204418
作者单位	Department of Biology, Indiana University Bloomington, Bloomington, IN, United States; Department of Ecology, Evolution and Behavior, University of Minnesota Twin Cities, Minneapolis, MN, United States; Department of Biology, West Virginia University, Morgantown, WV, United States; Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, United States; Jet Propulsion Laboratory, California Institute of Technology Joint Institute for Regional Earth System Science and Engineering, University of California at Los Angeles, Los Angeles, CA, United States
推荐引用方式 GB/T 7714	Keller A.B.,Brzostek E.R.,Craig M.E.,et al. Root-derived inputs are major contributors to soil carbon in temperate forests, but vary by mycorrhizal type[J],2021,24(4).
APA	Keller A.B.,Brzostek E.R.,Craig M.E.,Fisher J.B.,&Phillips R.P..(2021).Root-derived inputs are major contributors to soil carbon in temperate forests, but vary by mycorrhizal type.Ecology Letters,24(4).
MLA	Keller A.B.,et al."Root-derived inputs are major contributors to soil carbon in temperate forests, but vary by mycorrhizal type".Ecology Letters 24.4(2021).