DOI: 10.1016/j.foreco.2015.09.022
Scopus记录号: 2-s2.0-84943415703
论文题名: Carbon loss during the early decomposition stages of tree stumps in a post-wildfire Spanish black pine forest
作者: Martínez-García E. ; López-Serrano F.R. ; Dadi T. ; García-Morote F.A. ; Andrés-Abellán M. ; Rubio E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 358 起始页码: 321
结束页码: 334
语种: 英语
英文关键词: CO2 efflux
; Coarse woody debris
; Hot spots
; Mediterranean mountain ecosystem
; Wood mass loss
Scopus关键词: Carbon dioxide
; Decay (organic)
; Ecology
; Ecosystems
; Fires
; Regression analysis
; Coarse woody debris
; Decomposition process
; Environmental conditions
; Hot spot
; Mediterranean mountains
; Multiple regression model
; Total ecosystem respirations
; Wood mass loss
; Forestry
; biomass
; carbon cycle
; carbon dioxide
; carbon emission
; decomposition
; in situ measurement
; Mediterranean environment
; mountain environment
; tree stump
; wildfire
; woody debris
; Castilla-La Mancha
; Cuenca [Castilla-La Mancha]
; Spain
; Pinus nigra
英文摘要: Post-fire carbon released by the decomposition process of tree stumps in a Spanish black pine (Pinus nigra Arn. ssp. salzmannii) forest of the Cuenca Mountain range (Spain) was assessed during the first three years after felling fire-killed trees. Carbon loss was estimated at high- and low-burn severity sites by two different ways: (1) via wood mass loss (indirect method); and (2) via in situ CO2 efflux measurements (Rstump, direct method). By the indirect method, different aboveground wood decomposition parameters were estimated, i.e. decay rate (ka) and half life period (t0,5). By the direct method, multiple regression models related stump diameter and temperature to instantaneous Rstump. The results indicate that C loss depended on post-fire environmental conditions and woody substrate quality (i.e. stump size). Both methods showed similar C release patterns, with higher values obtained by the direct method for all study sites and tree stump sizes, likely because a portion of the CO2 originating in the belowground part of stump was diffused through the decomposed aboveground part. Using the defined Rstump models for ecosystem upscaling, the annual C loss of the study sites ranged from 0.08±0.01 to 1.33±0.06MgCha-1year-1. Thereby, stumps could be considered hot spots of CO2 production during their early stages of decomposition, which particularly at post-fire managed areas, with large numbers are left to decompose, can represent a significant and poorly studied part of the total ecosystem respiration. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65248
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Science and Agroforestry Technology and Genetics, Higher Technical School of Agricultural and Forestry Engineering, University of Castilla-La Mancha, Campus Universitario s/n, Albacete, Spain; Environmental Department, Renewable Energy Research Institute, University of Castilla-La Mancha, Campus Universitario s/n, Albacete, Spain; Department of Applied Physics, School of Industrial Engineering, University of Castilla-La Mancha, Campus Universitario s/n, Albacete, Spain
Recommended Citation:
Martínez-García E.,López-Serrano F.R.,Dadi T.,et al. Carbon loss during the early decomposition stages of tree stumps in a post-wildfire Spanish black pine forest[J]. Forest Ecology and Management,2015-01-01,358