DOI: 10.1016/j.foreco.2014.06.035
Scopus记录号: 2-s2.0-84904556555
论文题名: Quantity and quality of dissolved organic carbon released from coarse woody debris of different tree species in the early phase of decomposition
作者: Bantle A. ; Borken W. ; Ellerbrock R.H. ; Schulze E.D. ; Weisser W.W. ; Matzner E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 329 起始页码: 287
结束页码: 294
语种: 英语
英文关键词: Coarse woody debris
; Decomposition
; Dissolved organic carbon
; DOC
; DOC quality
; Tree species
Scopus关键词: Carbohydrates
; Decomposition
; Phenols
; Runoff
; Soils
; Stream flow
; Wood products
; Average concentration
; Coarse woody debris
; Dissolved organic carbon
; DOC
; Dormant seasons
; Element contents
; Spectroscopic property
; Tree species
; Forestry
; Carbohydrates
; Carbon
; Decay
; Dissolving
; Forestry
; Phenols
; Runoff
; Stream Flow
; Wood
英文摘要: The release of dissolved organic carbon (DOC) from decomposing coarse woody debris (CWD) may result in large DOC inputs to the forest soil. Here we investigated the influence of tree species on the amounts and quality of DOC from CWD in the early phase of decomposition.Logs from 13 tree species were exposed in winter 2008/2009 on the soil in a temperate Fagus sylvatica L. forest in Germany. Runoff solutions were periodically collected for 17. months from June 2011-November 2012 underneath logs and the net release of DOC was calculated for each log on an annual scale. The quality of DOC was assessed by its contents of soluble phenols, hydrolysable carbohydrates and by spectroscopic properties. Prior to field exposure of CWD, bark and sapwood were analyzed for their initial element content and water extractable DOC.Concentrations of DOC in log runoff were much (3-10 times) higher than in throughfall for all tree species. Average concentrations in runoff were largest under Quercus and Prunus and lowest under Tilia and Fraxinus. Accordingly, the net release of DOC from the logs was largest under Quercus and Prunus amounting to 60 and 56gCm-2 projected log areayr-1, respectively. The DOC net release for the tree species was positively related to the initial phenol content of sapwood, but not to C/N ratios in bark and sapwood. On a monthly to annual scale, the amount of precipitation had only a small influence on the net release of DOC, but the DOC net release was larger in the growing than in the dormant season. The concentrations of hydrolysable carbohydrates in log runoff were largest for Prunus and Quercus and lowest for Fraxinus and Tilia. Average concentrations of total phenols in runoff ranged from about 2 to 7mgL-1 with Quercus, Fraxinus, Betula, Picea and Larix representing the upper range. Spectroscopic properties indicate that the DOC leached from logs is microbially modified and oxidized in comparison to DOC in initial bark and wood extracts.Our results suggest that the DOC release from CWD is tree species specific in terms of quantity and quality and causes huge DOC fluxes to the soil underneath CWD. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65811
Appears in Collections: 影响、适应和脆弱性
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作者单位: Soil Ecology, University of Bayreuth, Bayreuth Center of Ecology and Environmental Research (BayCEER), Dr.-Hans-Frisch-Str. 1-3, 95448 Bayreuth, Germany; Institute of Soil Landscape Research, Leibnitz Centre for Agricultural Landscape Research, Eberswalder Str. 84, 15374 Müncheberg, Germany; Max-Planck-Institute for Biogeochemistry, Postbox 100164, 07701 Jena, Germany; Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, 85350 Freising-Weihenstephan, Germany
Recommended Citation:
Bantle A.,Borken W.,Ellerbrock R.H.,et al. Quantity and quality of dissolved organic carbon released from coarse woody debris of different tree species in the early phase of decomposition[J]. Forest Ecology and Management,2014-01-01,329