DOI: 10.1016/j.foreco.2013.12.025
Scopus记录号: 2-s2.0-84892887397
论文题名: Influence of the substrate and ecosystem attributes on the decomposition rates of coarse woody debris in European boreal forests
作者: Shorohova E. ; Kapitsa E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 315 起始页码: 173
结束页码: 184
语种: 英语
英文关键词: Decay rate
; Decomposition factors
; Logs
; Mortality mode
; Snags
; Stumps
Scopus关键词: Decay rate
; Logs
; Mortality mode
; Snags
; Stumps
; Biodiversity
; Decay (organic)
; Ecosystems
; Population statistics
; Forestry
; biodiversity
; biogeochemistry
; boreal forest
; carbon cycle
; chronosequence
; coarse woody debris
; coniferous forest
; deciduous forest
; decomposition
; forest ecosystem
; mortality
; snag
; substrate
; Biodiversity
; Decay
; Ecosystems
; Forestry
; Logs
; Europe
英文摘要: Narrowing the uncertainties in coarse woody debris (CWD) decomposition rates depending on the ecosystem and substrate attributes can improve our understanding of biodiversity patterns and carbon dynamics in forest ecosystems. We estimated decomposition rates of aboveground CWD, represented by fallen and leaning logs, stumps and snags >8cm in diameter sampled at eight sites in European boreal forests. In total, 3491 CWD pieces were sampled. The chronosequence period covered a range up to 168years. Single exponential decomposition (mass loss) rates (k) averaged 0.066, 0.032, 0.027, and 0.014year-1 for aspen (Populus tremula) and birch (Betula pendula, Betula pubescens), fir (Abies sibirica) and spruce (Picea abies, Picea obovata), Scots pine (Pinus sylvestris) and Siberian pine (Pinus sibirica), respectively. At the regional-scale, the decomposition rate decreased with increasing difference between maximum and minimum temperatures. The CWD decomposition rate was greater on open fertile sites with moderate moisture compared to rates on poor dry or moist sites under closed tree canopies. CWD tree species played the primary role in decomposition at the CWD-piece scale. CWD position and tree mortality mode were rate-controlling mainly for decomposition of fir and spruce CWD. CWD size did not affect decomposition rates. Our results predict CWD decomposition rates as a function of climatic factors, site conditions, tree species, stem position and mode of tree mortality in European boreal forests at the scale of regions, forest stands and individual CWD pieces. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66126
Appears in Collections: 影响、适应和脆弱性
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作者单位: Saint-Petersburg State Forest University, 194021 Institutsky str. 5, Saint Petersburg, Russian Federation; Finnish Forest Research Institute, Vantaa Research Unit, P.O. Box 18, 01301 Vantaa, Finland
Recommended Citation:
Shorohova E.,Kapitsa E.. Influence of the substrate and ecosystem attributes on the decomposition rates of coarse woody debris in European boreal forests[J]. Forest Ecology and Management,2014-01-01,315