globalchange  > 气候变化与战略
DOI: 10.1111/ele.13651
论文题名:
Root-derived inputs are major contributors to soil carbon in temperate forests, but vary by mycorrhizal type
作者: Keller A.B.; Brzostek E.R.; Craig M.E.; Fisher J.B.; Phillips R.P.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期:4
起始页码: 626
结束页码: 635
语种: 英语
中文关键词: 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
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
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被引频次[WOS]:74   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166859
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Ecology Letters,2021-01-01,24(4)
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