DOI: 10.1111/ele.13700
论文题名: Experimental nitrogen fertilisation globally accelerates, then slows decomposition of leaf litter
作者: Gill A.L. ; Schilling J. ; Hobbie S.E.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期: 4 起始页码: 802
结束页码: 811
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166834
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Gill A.L.,Schilling J.,Hobbie S.E.. Experimental nitrogen fertilisation globally accelerates, then slows decomposition of leaf litter[J]. Ecology Letters,2021-01-01,24(4)