DOI: 10.1016/j.foreco.2015.09.026
Scopus记录号: 2-s2.0-84942799388
论文题名: Decomposition of Eucalyptus grandis and Acacia mangium leaves and fine roots in tropical conditions did not meet the Home Field Advantage hypothesis
作者: Bachega L.R. ; Bouillet J.-P. ; de Cássia Piccolo M. ; Saint-André L. ; Bouvet J.-M. ; Nouvellon Y. ; de Moraes Gonçalves J.L. ; Robin A. ; Laclau J.-P.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 359 起始页码: 33
结束页码: 43
语种: 英语
英文关键词: Decomposers
; Lignin
; Litter quality
; N
; P
; Water soluble compounds
Scopus关键词: Forestry
; Lignin
; Nitrogen
; Nitrogen fixation
; Phosphorus
; Tropics
; Decomposers
; Eucalyptus grandis
; Litter decomposition
; Litter quality
; Nitrogen fixing trees
; Tropical conditions
; Tropical rain forest
; Water soluble compounds
; Plants (botany)
; biomass
; concentration (composition)
; decomposition
; dicotyledon
; experimental study
; leaf litter
; lignin
; monoculture
; nitrogen
; nitrogen fixation
; nutrient availability
; phosphorus
; rainforest
; root
; soil nutrient
; tropical forest
; Acacia
; Forest Litter
; Lignins
; Nitrogen
; Phosphorus
; Acacia
; Acacia mangium
; Eucalyptus
; Eucalyptus grandis
英文摘要: Unlike Eucalyptus monocultures, nitrogen fixing trees are likely to improve the soil nutrient status through the decomposition of N-enriched litter. The Home Field Advantage (HFA) hypothesis states that plants can create conditions that increase the decomposition rates of their own litter. However, there may not be any HFA when most of the decomposers are generalists. A reciprocal transplant decomposition experiment of fine roots and leaves of Acacia mangium and Eucalyptus grandis was undertaken in monocultures of these two species to test the HFA hypothesis using a complete randomized design with three blocks. Three litterbags containing leaf or fine root residues of each species were collected every 3 months from each plot over 12 months for fine roots and 24 months for leaves. The litter mass and C, N and P concentrations were measured at each sampling date. The concentrations of C-compounds were measured 0, 12 and 24 months from the start of the experiment. There was no evidence of HFA for either the leaves or the fine roots of either species. The decomposition rates were slower for Acacia litter than for Eucalyptus litter even though initial N concentrations were 1.9-2.9 times higher and P concentrations were 1.5-3.3 times higher in the Acacia residues. N:P ratios were greater than 20-30 for the residues of both species, with the highest values for Acacia. Litter decomposition depended partly on the C quality of the litter, primarily in terms of water soluble compounds and lignin content. As shown recently in tropical rainforests, these results suggest that the activity of decomposers is limited by energy starvation in tropical planted forests. Decomposer activity may also have been limited by P availability which may not have been directly related to the P concentrations or C:P ratios in the residues. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65188
Appears in Collections: 影响、适应和脆弱性
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作者单位: USP, CENA, 303 Av. Centenario, Piracicaba, SP, Brazil; USP, ESALQ, 11 Av. Padua Dias, Piracicaba, SP, Brazil; CIRAD, UMR Eco and Sols, 2 Place Viala, Montpellier, France; INRA, UR BEF, Rue de l'Arboretum, Champenoux, France; CIRAD, UMR AGAP, Avenue Agropolis, Montpellier Cedex 5, France; UNESP, Ciência Florestal, 1780 Rua José Barbosa de Barros, Botacatu, Brazil
Recommended Citation:
Bachega L.R.,Bouillet J.-P.,de Cássia Piccolo M.,et al. Decomposition of Eucalyptus grandis and Acacia mangium leaves and fine roots in tropical conditions did not meet the Home Field Advantage hypothesis[J]. Forest Ecology and Management,2016-01-01,359