DOI: 10.1016/j.foreco.2013.06.048
Scopus记录号: 2-s2.0-84884136084
论文题名: A 100-year conservation experiment: Impacts on forest carbon stocks and fluxes
作者: Sharma T. ; Kurz W.A. ; Stinson G. ; Pellatt M.G. ; Li Q.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 242
结束页码: 255
语种: 英语
英文关键词: Carbon
; Climate change
; Conservation
; Forest
; Mitigation
; National park
Scopus关键词: Climate change mitigation
; Ecological integrity
; Forest
; Forest conservation
; Glacier national parks
; Mitigation
; National parks
; Natural disturbance
; Carbon
; Climate change
; Conservation
; Ecosystems
; Environmental protection
; Global warming
; Logging (forestry)
; Carbon dioxide
; carbon budget
; carbon dioxide
; carbon flux
; climate change
; conservation management
; disturbance
; experimental study
; forest ecosystem
; forest management
; mortality
; national park
; wildfire
; Carbon
; Carbon Dioxide
; Conservation
; Ecosystems
; Logging
; British Columbia
; Canada
; Columbia Mountains
; Glacier National Park [British Columbia]
; Kootenay National Park
; Purcell Mountains
; Rocky Mountains
; Yoho National Park
英文摘要: Forest conservation is an important climate change mitigation strategy. National parks in Canada's Rocky and Purcell Mountains offer a rare opportunity to evaluate the impacts of a century of conservation on forest carbon (C) stocks and fluxes. We studied forest ecosystem C dynamics of three national parks in the Rocky and Purcell Mountains of British Columbia - Yoho, Kootenay, and Glacier National Parks - over the period 1970-2008 using the CBM-CFS3 inventory-based forest C budget model. We hypothesized that parks and protected areas would contain higher forest C density and have lower CO2 uptake rates compared to their surrounding reference areas because of the exclusion of timber harvesting and resulting predominance of older, slower growing forest stands. Results for Glacier National Park relative to its reference area were consistent with our hypothesis. Forests in Kootenay National Park were substantially younger than those in its reference area despite the exclusion of harvesting because natural disturbances affected large areas within the park over the past century. Site productivity in Kootenay National Park was also generally higher in the park than in its reference area. Consequently, Kootenay National Park had both higher C density and higher CO2 uptake than its reference area. Yoho National Park forests were similar in age to reference area forests and more productive, and therefore had both higher C stocks and greater CO2 uptake. C density was higher in all 3 parks compared to their surrounding areas, and parks with younger forests than reference areas had higher CO2 uptake. The results of this study indicate that forest conservation in protected areas such as national parks can preserve existing C stocks where natural disturbances are rare. Where natural disturbances are an important part of the forest ecology, conservation may or may not contribute to climate change mitigation because of the risk of C loss in the event of wildfire or insect-caused tree mortality. Anticipated increases in natural disturbance resulting from global warming may further reduce the climate change mitigation potential of forest conservation in disturbance-prone ecosystems. We show that managing for the ecological integrity of landscapes can also have carbon mitigation co-benefits. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66314
Appears in Collections: 影响、适应和脆弱性
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作者单位: Parks Canada, 2220 Harbour Road, Sidney, BC V8L2P6, Canada; Natural Resources Canada, Canadian Forest Service, Victoria, BC V8Z1M5, Canada; Parks Canada, 300-300 West Georgia Street, Vancouver, BC V6B6B4, Canada; Forest Analysis and Inventory Branch, B.C. Ministry of Forests Lands and Natural Resources Operations, P.O. Box 9512 Stn Prov Govt, Victoria, BC V8W9C2, Canada
Recommended Citation:
Sharma T.,Kurz W.A.,Stinson G.,et al. A 100-year conservation experiment: Impacts on forest carbon stocks and fluxes[J]. Forest Ecology and Management,2013-01-01,310