气候变化领域集成服务门户(CCPortal): Carbon pools and biomass stores in the forests of Coastal Alaska: Uncertainty of estimates and impact of disturbance

CCPortal

DOI	10.1016/j.foreco.2018.12.014
	Carbon pools and biomass stores in the forests of Coastal Alaska: Uncertainty of estimates and impact of disturbance
	Yatskov M.A.; Harmon M.E.; Barrett T.M.; Dobelbower K.R.
发表日期	2019
ISSN	0378-1127
起始页码	303
结束页码	317
卷号	434
英文摘要	Forests provide significant long-term carbon (C) storage, but have the potential to increase future C emissions with a changing climate. Aboveground biomass, C stores, and the effect of disturbance were examined using forest inventory data collected across all ownerships on 6.2 million ha in Coastal Alaska. We modelled six C pools using empirical data, estimated two others using the literature, and quantified estimate uncertainty. The average (±SE) aboveground live (218.9 ± 4.6 Mg/ha) and log (28.1 ± 1.8 Mg/ha) biomass in the Alaskan Temperate ecoregion were among the lowest in the Pacific Northwest, whereas snag biomass (30.5 ± 1.0 Mg/ha) was among the highest. In the Alaskan Boreal ecoregion, on the Kenai Peninsula, coarse woody debris (CWD) biomass comprised almost 50% of the regional average of aboveground woody biomass (76.7 ± 3.8 Mg/ha) with bark beetle damaged stands containing 82% of the total CWD biomass. In contrast, in the Temperate ecoregion, CWD comprised 20% of the regional aboveground woody average (277.5 ± 5.4 Mg/ha) with 76% of total CWD biomass in undisturbed stands. Total C stores estimates in Coastal Alaska forests ranged between 1523.6 and 1892.8 Tg with the highest contribution from soils. The largest potential reductions in uncertainty are related to the tree and soils C pools. Disturbance determined total biomass amounts in the system and controlled the ratio between live and dead biomass pools and thus has the ability to shift forest stands into a C source to the atmosphere. © 2018 Elsevier B.V.
英文关键词	Alaska; Biomass; Carbon; CWD; Disturbance; Uncertainty
语种	英语
scopus关键词	Biomass; Carbon; Digital storage; Forestry; Lakes; Uncertainty analysis; Above ground biomass; Above-ground woody biomass; Alaska; Coarse woody debris; Disturbance; Forest inventory data; Potential reduction; Uncertainty; Living systems studies; air-soil interaction; biomass; carbon; climate change; coarse woody debris; disturbance; ecoregion; estimation method; forest ecosystem; forest inventory; uncertainty analysis; Alaska; Biomass; Carbon; Data; Estimates; Forestry; Forests; Lakes; Alaska; Kenai Peninsula; Pacific Northwest; United States; Scolytinae
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156209
作者单位	USDA Forest Service, PNW Research Station, Anchorage Forestry Sciences Lab, 161 E 1st Ave., Door 8, Anchorage, AK 99501, United States; Department of Forest Ecosystems and Society, Oregon State University, 321 Richardson Hall, Corvallis, OR 97331, United States; USDA Forest Service, Wenatchee Forestry Sciences Lab, 1133 N. Western Ave., Wenatchee, WA 98801, United States; Cirrus North, LLC, 7350 Tyre Drive, Anchorage, AK 99502, United States
推荐引用方式 GB/T 7714	Yatskov M.A.,Harmon M.E.,Barrett T.M.,et al. Carbon pools and biomass stores in the forests of Coastal Alaska: Uncertainty of estimates and impact of disturbance[J],2019,434.
APA	Yatskov M.A.,Harmon M.E.,Barrett T.M.,&Dobelbower K.R..(2019).Carbon pools and biomass stores in the forests of Coastal Alaska: Uncertainty of estimates and impact of disturbance.Forest Ecology and Management,434.
MLA	Yatskov M.A.,et al."Carbon pools and biomass stores in the forests of Coastal Alaska: Uncertainty of estimates and impact of disturbance".Forest Ecology and Management 434(2019).