The effect of changing land use on soil radiocarbon

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Date: Oct. 29, 1993
From: Science(Vol. 262, Issue 5134)
Publisher: American Association for the Advancement of Science
Document Type: Article
Length: 1,397 words

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Abstract :

Most carbon budgets require greening of the terrestrial biosphere as a sink for some of the excess carbon dioxide produced by fossil fuel burning and deforestation. Much of this storage is thought to occur in soils, but running counter to this conclusion is the observation that cultivation has reduced the agricultural reservoir of soil humus. Radiocarbon measurements in agricultural soils lend support to this browning of agricultural lands. Moreover, the loss is from the fast cycling portion of the humus.

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Gale Document Number: GALE|A14641107