DOI: 10.1016/j.foreco.2015.05.030
Scopus记录号: 2-s2.0-84937972340
论文题名: Decay patterns and carbon density of standing dead trees in California mixed conifer forests
作者: Cousins S.J.M. ; Battles J.J. ; Sanders J.E. ; York R.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 353 起始页码: 136
结束页码: 147
语种: 英语
英文关键词: Carbon
; Decay
; Greenhouse gas accounting
; Mixed conifer
; Snag
; Standing dead
; Wood density
Scopus关键词: Carbon
; Decay (organic)
; Ecosystems
; Greenhouse gases
; Decay
; Greenhouse gas accountings
; Mixed conifer
; Snag
; Standing dead
; Wood density
; Forestry
; carbon balance
; coniferous forest
; dead wood
; forest ecosystem
; greenhouse gas
; mixed forest
; mortality
; phytomass
; volume
; California
; United States
; Coniferophyta
英文摘要: Dead wood plays important structural and biogeochemical roles in forest ecosystem processes. Some aspects of woody debris dynamics have been carefully studied, but the decay patterns and carbon density of standing dead (SD) trees are only weakly characterized. Climbing forest mortality rates are also driving increases in the creation and abundance of SD trees. All forms of forest carbon accounting, from stand-level biomass calculations to dynamic earth systems models, are improved by a better understanding of SD tree physical and chemical traits. Using dimensional analysis, we described the patterns of density, carbon concentration, and net carbon density in decaying SD trees of six California mixed conifer species. As decay class advanced, trees showed a progressively lower density and a small increase in carbon concentration. Net carbon density of the most decayed SD trees was only 60% that of live trees. The key characteristics of SD trees that determine these patterns are species, surface to volume ratio, and relative position within the tree. The decay of SD trees and how deadwood biomass is estimated in large scale inventories also have repercussions in greenhouse gas accounting. When the measured changes in carbon density are applied to SD carbon stock estimates for California mixed conifer forests, the decay-adjusted estimates are 3.66-3.74. Tg (18%) lower than estimates that do not incorporate change due to decay. © 2015 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65362
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Environmental Science, Policy and Management, University of California Berkeley, Berkeley, CA, United States; Center for Forestry, Blodgett Forest Research Station, University of California Berkeley, Georgetown, CA, United States
Recommended Citation:
Cousins S.J.M.,Battles J.J.,Sanders J.E.,et al. Decay patterns and carbon density of standing dead trees in California mixed conifer forests[J]. Forest Ecology and Management,2015-01-01,353