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Publication Title: Effects on carbon storage of conversion of old-growth forests to young forests
Year: 1990 Publication Type: Journal Article
H. J. Andrews Publication Number: 1046
Citation: Harmon, Mark E.; Ferrell, William K.; Franklin, Jerry F. 1990. Effects on carbon storage of conversion of old-growth forests to young forests. Science. 247: 699-702.
Online PDF: http://andrewsforest.oregonstate.edu/pubs/pdf/pub1046.pdf
Abstract: Simulations of carbon storage suggest that conversion of old-growth forests to youngfast-growing forests will not decrease atmospheric carbon dioxide (CO2) in general, ashas been suggested recently. During simulated timber harvest, on-site carbon storage isreduced considerably and does not approach old-growth storage capacity for at least200 years. Even when sequestration of carbon in wooden buildings is included in themodels, timber harvest results in a net flux of CO2 to the atmosphere. To offset thiseffect, the production of lumber and other long-term wood products, as well as the span of buildings, would have to increase markedly. Mass balance calculations indicatethat the conversion of 5 x 106 hectares of old-growth forests to younger plantations inwestern Oregon and Washington in the last 100 years has added 1.5 x 109 to1.8 x 109 megagrams of carbon to the atmosphere.
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