DOI: 10.1016/j.foreco.2013.05.029
Scopus记录号: 2-s2.0-84884820704
论文题名: Carbon and nitrogen pools and fluxes above and below ground in spruce, pine and birch stands in southern Sweden
作者: Hansson K. ; Fröberg M. ; Helmisaari H.-S. ; Kleja D.B. ; Olsson B.A. ; Olsson M. ; Persson T.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 309 起始页码: 28
结束页码: 35
语种: 英语
英文关键词: Betula pendula
; Carbon
; Nitrogen
; Picea abies
; Pinus sylvestris
; Soil
Scopus关键词: Betula pendula
; Biomass and soils
; Carbon and nitrogen
; Decomposition rate
; Ground vegetation
; Indirect effects
; Picea abies
; Pinus sylvestris
; Biomass
; Carbon
; Forestry
; Nitrogen
; pH effects
; Vegetation
; Soils
; abundance
; biogeochemistry
; biomass
; bioturbation
; coniferous forest
; decomposition
; earthworm
; ectomycorrhiza
; litter
; pH
; soil carbon
; soil nitrogen
; Sweden
; Betula pendula
; Picea
; Picea abies
; Pinus sylvestris
英文摘要: We synthesised results on soil carbon (C) and nitrogen (N) fluxes and the accumulation of soil organic C and N under adjacent 50-year-old Norway spruce, Scots pine and silver birch stands growing on similar soils and evaluated the different processes involved. C and N budgets were calculated. Spruce stands had larger stocks of C and N in biomass and soil than birch stands, with pine intermediate. The differences in soil stocks were mainly found in the organic layer, whereas differences in the mineral soil were small. The study showed that there is no simple answer to what is causing the differences in soil C and N stocks, because several processes are interacting. Spruce and pine trees had higher biomass and litter production than birch trees, but total litter inputs showed no significant difference between stands, because the rich ground vegetation under pine and birch contributed with substantial litter inputs, in contrast to the poor ground vegetation under spruce. Decomposition rate (per g of C) was markedly higher under birch than under spruce and pine resulting in lower C and N stocks in the organic layer. This effect was amplified by higher abundance and biomass of earthworms, favoured by higher pH and palatable litter under birch. Earthworm bioturbation probably both increased decomposition rate and damaged the ectomycorrhizal network with negative consequences for the formation of mycorrhizal litter and C storage. In conclusion, the direct effects of spruce, pine and birch litter on C and N pools and fluxes were modified by indirect effects of understorey structure, pH and earthworm responses. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66347
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Ecology, Swedish University of Agricultural Sciences, Box 7044, SE-75007 Uppsala, Sweden; Department of Soil and Environment, Swedish University of Agricultural Sciences, Box 7014, SE-75007 Uppsala, Sweden; Department of Forest Sciences, University of Helsinki, P.O. Box 27, FI-00014, Finland; Department of Aquatic Sciences and Assessment, Box 7050, SE-750 07 Uppsala, Sweden
Recommended Citation:
Hansson K.,Fröberg M.,Helmisaari H.-S.,et al. Carbon and nitrogen pools and fluxes above and below ground in spruce, pine and birch stands in southern Sweden[J]. Forest Ecology and Management,2013-01-01,309