DOI: 10.1016/j.foreco.2016.12.018
Scopus记录号: 2-s2.0-85008873185
论文题名: Early forest thinning changes aboveground carbon distribution among pools, but not total amount
作者: Schaedel M.S. ; Larson A.J. ; Affleck D.L.R. ; Belote R.T. ; Goodburn J.M. ; Page-Dumroese D.S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 389 起始页码: 187
结束页码: 198
语种: 英语
英文关键词: Carbon storage
; Climate change
; Climate change adaptation
; Climate change mitigation
; Density management
; Larix occidentalis
; Long-term studies
; Precommercial thinning
; Western larch
Scopus关键词: Economic and social effects
; Forestry
; Lakes
; Storage management
; Carbon storage
; Climate change adaptation
; Climate change mitigation
; Density management
; Larix occidentalis
; Long term study
; Pre-commercial thinning
; Western larch
; Climate change
; Larix occidentalis
英文摘要: Mounting concerns about global climate change have increased interest in the potential to use common forest management practices, such as forest density management with thinning, in climate change mitigation and adaptation efforts. Long-term effects of forest density management on total aboveground C are not well understood, especially for precommercial thinning (PCT) implemented very early in stand development. To assess the climate change mitigation potential of PCT, as well as tradeoffs with climate change adaptation, we examined total aboveground C stores in a 54-year-old western larch (Larix occidentalis Nutt.) precommercial thinning experiment to determine how different PCT treatments affect long-term aboveground C storage and distribution among pools. Four aboveground C pools (live overstory, live understory/mid-story, woody detritus, and forest floor) were measured and separated into C accumulated prior to initiation of the current stand (legacy C) and C accumulated by the current stand (non-legacy C). PCT had no influence on the total non-legacy aboveground C stores 54 years after treatment. Live tree C was nearly identical across densities due to much larger trees in low density treatments. Low density stands had more understory and mid-story C while unthinned plots had significantly more non-legacy woody detritus C than thinned stands. Legacy pools did not vary significantly with density, but made up a substantial proportion of aboveground C stores. We found that: (1) fifty-four years after PCT total aboveground C is similar across treatments, due primarily to the increase in mean tree C of trees grown at lower stand densities; (2) deadwood legacies from the pre-disturbance forest still play an important role in long-term C storage 62 years after current stand initiation, accounting for approximately 20–25% of aboveground C stores; and (3) given enough time since early thinning, there is no trade-off between managing stands to promote individual tree growth and development of understory vegetation, and maximizing stand level accumulation of aboveground C over the long term. We infer that early PCT can be used to simultaneously achieve climate change mitigation and adaptation objectives, provided treatments are implemented early in stand development before canopy closure and the onset of intense intertree competition. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64484
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Management, University of Montana, Missoula, MT, United States; The Wilderness Society, Northern Rockies Regional Office, 503 W. Mendenhall, Bozeman, MT, United States; US Forest Service, Rocky Mountain Research Station, 1221 South Main Street, Moscow, ID, United States
Recommended Citation:
Schaedel M.S.,Larson A.J.,Affleck D.L.R.,et al. Early forest thinning changes aboveground carbon distribution among pools, but not total amount[J]. Forest Ecology and Management,2017-01-01,389