DOI: 10.1002/2013GB004633
Scopus记录号: 2-s2.0-84888797436
论文题名: Redistribution of forest carbon caused by patch blowdowns in subalpine forests of the Southern Rocky Mountains, USA
作者: Wohl E
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 4 起始页码: 1205
结束页码: 1213
语种: 英语
英文关键词: blowdown
; instream wood
; Rocky Mountain National Park
; subalpine forest
; total organic carbon
; uprooting
Scopus关键词: Blow down
; Rocky Mountain National Park
; Subalpine forests
; Total Organic Carbon
; uprooting
; Banks (bodies of water)
; Carbon
; Floods
; Soils
; Wood
; Forestry
; carbon cycle
; climate conditions
; dead wood
; floodplain
; forest ecosystem
; subalpine environment
; Colorado
; Rocky Mountain National Park
; United States
; Hexapoda
英文摘要: Patch blowdowns varying in size from 0.1 to 33 ha affected several areas in Rocky Mountain National Park, Colorado, USA, during the winter of 2011-2012. These blowdowns resulted in substantial redistribution of forest carbon by snapping and uprooting trees, thereby increasing instream wood recruitment, recruitment of dead wood to the forest floor, and exposure of organic soil on uprooted tree plates. Estimates of carbon redistribution at five sites in Rocky Mountain National Park range as high as 308 Mg C/ha in high-severity patches to 106 Mg C/ha in low-severity patches, of which typically 10-30% is soil C and the remainder is downed wood. Masses of carbon redistributed from living to dead biomass at high-severity sites represent a substantial portion of average total biomass in old-growth subalpine forests in the region. Consequently, the potential for increasing frequency and/or severity of blowdowns under a warming climate represents a significant potential source of terrestrial carbon to the atmosphere. The majority of this carbon is in the form of downed wood that becomes a carbon source to the atmosphere, although interactions between downed wood and river processes can locally increase carbon storage in floodplain soil. Predictions of changes in precipitation and wind patterns, and associated changes in wildfire and insect infestation, suggest that blowdowns may become more common in future in the Southern Rockies, but the consequences for carbon dynamics depend on site-specific interactions between blowdowns and other processes such as floodplain storage of organic matter. ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77552
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Geosciences, Colorado State University, Fort Collins, CO 80523-1482, United States
Recommended Citation:
Wohl E. Redistribution of forest carbon caused by patch blowdowns in subalpine forests of the Southern Rocky Mountains, USA[J]. Global Biogeochemical Cycles,2013-01-01,27(4)