DOI: 10.1016/j.foreco.2013.01.022
Scopus记录号: 2-s2.0-84884817001
论文题名: Fine root production and turnover of tree and understorey vegetation in Scots pine, silver birch and Norway spruce stands in SW Sweden
作者: Hansson K. ; Helmisaari H.-S. ; Sah S.P. ; Lange H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 309 起始页码: 58
结束页码: 65
语种: 英语
英文关键词: Betula pendula
; Carbon
; Fine root turnover
; Minirhizotron
; Picea abies
; Pinus sylvestris
Scopus关键词: Betula pendula
; Fine roots
; Minirhizotrons
; Picea abies
; Pinus sylvestris
; Biomass
; Carbon
; Minerals
; Plants (botany)
; Soils
; Forestry
; coniferous forest
; deciduous forest
; fine root
; humus
; longevity
; net primary production
; soil horizon
; turnover
; understory
; Betula Verrucosa
; Biomass
; Carbon
; Forestry
; Minerals
; Picea Abies
; Pinus Sylvestris
; Plants
; Soil
; Sweden
; Betula pendula
; Picea
; Picea abies
; Pinus sylvestris
英文摘要: Fine roots contribute to net primary production in forests, but knowledge of fine root longevity and turnover is still incomplete and limited to few tree species. In this study, we used minirhizotrons to compare fine root biomass, longevity and turnover of Pinus sylvestris L., Betula pendula Roth and Picea abies (L) Karst. in southern Sweden. Minirhizotron tubes were installed in 2006 and root images were taken in 2007-2010. Soil cores were used to estimate fine root biomass. Soil samples were taken from the humus layer and from 0 to 10. cm, 10 to 20. cm and 20 to 30. cm depth in the mineral soil. Only images from the humus layer and the upper 10. cm of mineral soil were included in root analysis. Spruce has a higher aboveground production than pine and birch in southern Sweden and this was reflected in larger fine root biomass as well as higher fine root biomass production. The annual tree fine root biomass production (humus and 0-30cm in mineral soil) was 73, 78 and 284gm-2 in pine, birch and spruce stands, respectively. Thicker fine roots tended to live longer. The majority of the fine roots were thinner than 0.5mm in diameter, with a turnover rate (KM) of 0.4year-1. When comparing all fine roots, i.e. all roots 0-2mm, pine had the highest longevity, 1120days, compared with 900days for spruce and 922days for birch (KM). © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66343
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, P.O. Box 7044, SE-75007 Uppsala, Sweden; Department of Forest Sciences, University of Helsinki, P.O. Box 27, FI-00014, Finland; Finnish Forest Research Institute, P.O. Box 18, FI-01301 Vantaa, Finland; Norwegian Forest and Landscape Institute, P.O. Box 115, NO-1431 Ås, Norway
Recommended Citation:
Hansson K.,Helmisaari H.-S.,Sah S.P.,et al. Fine root production and turnover of tree and understorey vegetation in Scots pine, silver birch and Norway spruce stands in SW Sweden[J]. Forest Ecology and Management,2013-01-01,309