气候变化领域集成服务门户(CCPortal): Meeting GHG reduction targets requires accounting for all forest sector emissions

CCPortal

DOI	10.1088/1748-9326/ab28bb
	Meeting GHG reduction targets requires accounting for all forest sector emissions
	Hudiburg T.W.; Law B.E.; Moomaw W.R.; Harmon M.E.; Stenzel J.E.
发表日期	2019
ISSN	17489318
卷号	14 期号:9
英文摘要	Atmospheric greenhouse gases (GHGs) must be reduced to avoid an unsustainable climate. Because carbon dioxide is removed from the atmosphere and sequestered in forests and wood products, mitigation strategies to sustain and increase forest carbon sequestration are being developed. These strategies require full accounting of forest sector GHG budgets. Here, we describe a rigorous approach using over one million observations from forest inventory data and a regionally calibrated life-cycle assessment for calculating cradle-to-grave forest sector emissions and sequestration. We find that Western US forests are net sinks because there is a positive net balance of forest carbon uptake exceeding losses due to harvesting, wood product use, and combustion by wildfire. However, over 100 years of wood product usage is reducing the potential annual sink by an average of 21%, suggesting forest carbon storage can become more effective in climate mitigation through reduction in harvest, longer rotations, or more efficient wood product usage. Of the ∼10 700 million metric tonnes of carbon dioxide equivalents removed from west coast forests since 1900, 81% of it has been returned to the atmosphere or deposited in landfills. Moreover, state and federal reporting have erroneously excluded some product-related emissions, resulting in 25%-55% underestimation of state total CO2 emissions. For states seeking to reach GHG reduction mandates by 2030, it is important that state CO2 budgets are effectively determined or claimed reductions will be insufficient to mitigate climate change. © 2019 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Budget control; Carbon dioxide; Climate change; Digital storage; Greenhouse gases; Life cycle; Wood products; Atmospheric greenhouse; Climate mitigations; Forest carbon sequestration; Forest inventory data; Forest sectors; Life Cycle Assessment (LCA); Mitigation strategy; Rigorous approach; Forestry; accountability; carbon dioxide; carbon sequestration; carbon storage; emission; federal system; forest ecosystem; forest inventory; greenhouse gas; life cycle analysis; mitigation; wildfire; United States
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154403
作者单位	Department of Forest, Rangeland and Fire Sciences, University of Idaho, 875 Perimeter Dr MS 1133, Moscow, ID 83844, United States; Department of Forest Ecosystems and Society, Oregon State University, 321 Richardson Hall, Corvallis, OR 97333, United States; Center for International Environment and Resource Policy, Fletcher School, Global Development and Environment Institute, Tufts University, Medford, MA, United States
推荐引用方式 GB/T 7714	Hudiburg T.W.,Law B.E.,Moomaw W.R.,et al. Meeting GHG reduction targets requires accounting for all forest sector emissions[J],2019,14(9).
APA	Hudiburg T.W.,Law B.E.,Moomaw W.R.,Harmon M.E.,&Stenzel J.E..(2019).Meeting GHG reduction targets requires accounting for all forest sector emissions.Environmental Research Letters,14(9).
MLA	Hudiburg T.W.,et al."Meeting GHG reduction targets requires accounting for all forest sector emissions".Environmental Research Letters 14.9(2019).