A greenhouse gas inventory of Oregon's forests

This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program.  It is for informational purposes and may not be suitable for legal purposes., Mode of access: Internet from the Oregon Government Publications Collection.
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This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.
Abstract/Description: This document provides an inventory of the carbon flux, i.e., carbon stored in and released (in the form of CO2 ), from Oregon's forests each year between 1990 and 2002 in order to support Oregon's efforts to inventory its net annual greenhouse gas emissions. The primary drivers of the ability of Oregon's forests to act as an increasing pool of carbon each year are the growth of trees, the rate of timber harvest, and the amount of forest lost to fire. Estimates suggest that Oregon's forests sequestered, on average, 18 million metric tons (MMT) CO2 per year between 1990 and 2002, but with wide variability: 30 MMT CO2 were sequestered in 1996 due to a combination of strong forest growth and decreased timber harvest, but in 2002 the forests released more CO2 than they sequestered (due to dry weather that slowed forest growth and an unusually large fire - the Biscuit fire - that year), meaning they were an emissions source of 20 MMT CO2 for that year. Greenhouse gas emissions from fossil fuel use and industrial processes in Oregon ranged from 55 MMT and 65 MMT CO2-equivalent per year over the same time period. Data are outputs of a biogeochemistry model developed by the ORCA project, which is funded by the US Department of Energy and led by researchers at Oregon State University.
Subject(s): n-us-or
Greenhouse gases -- Oregon
Carbon sequestration -- Oregon
Forest management -- Environmental aspects -- Oregon
Date Issued: September 13, 2009.