气候变化领域集成服务门户(CCPortal): Experimental nitrogen fertilisation globally accelerates, then slows decomposition of leaf litter

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DOI	10.1111/ele.13700
	Experimental nitrogen fertilisation globally accelerates, then slows decomposition of leaf litter
	Gill A.L.; Schilling J.; Hobbie S.E.
发表日期	2021
ISSN	1461023X
起始页码	802
结束页码	811
卷号	24 期号:4
英文摘要	Plant litter decomposition is a central process in the carbon (C) cycle and sensitive to ongoing anthropogenic nitrogen (N) fertilisation. Previous syntheses evaluating the effect of N fertilisation on litter decomposition relied largely on models that define a constant rate of mass loss throughout decomposition, which may mask hypothesised shifts in the effect of N fertilisation on litter decomposition dynamics. In this meta-analysis, we compared the performance of four empirical decomposition models and showed that N fertilisation consistently accelerates early-stage but slows late-stage decomposition when the model structure allows for flexibility in decomposition rates through time. Within a particular substrate, early-stage N-stimulation of decomposition was associated with reduced rates of late-stage decay. Because the products of early- vs. late-stage decomposition are stabilised in soils through distinct chemical and physical mechanisms, N-induced changes in the litter decomposition process may influence the formation and cycling of soil C, the largest terrestrial C pool. © 2021 John Wiley & Sons Ltd.
关键词	Calcium decomposition model lignin meta-analysis necromass soil organic matter
英文关键词	anthropogenic effect; carbon cycle; decomposition; experimental study; fertilizer application; leaf litter; meta-analysis; nitrogen; carbon; nitrogen; ecosystem; fertilization; meta analysis; plant leaf; soil; Carbon; Ecosystem; Fertilization; Nitrogen; Plant Leaves; Soil
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/204393
作者单位	Department of Ecology, Evolution, Behavior, University of Minnesota, Saint Paul, MN 55108, United States; Department of Biology, Williams College, Williamstown, MA 01267, United States; Department of Plant & Microbial Biology, University of Minnesota, Saint Paul, MN 55108, United States
推荐引用方式 GB/T 7714	Gill A.L.,Schilling J.,Hobbie S.E.. Experimental nitrogen fertilisation globally accelerates, then slows decomposition of leaf litter[J],2021,24(4).
APA	Gill A.L.,Schilling J.,&Hobbie S.E..(2021).Experimental nitrogen fertilisation globally accelerates, then slows decomposition of leaf litter.Ecology Letters,24(4).
MLA	Gill A.L.,et al."Experimental nitrogen fertilisation globally accelerates, then slows decomposition of leaf litter".Ecology Letters 24.4(2021).