Soil carbon turnover in a recovering temperate forest


Journal Article

Soil radiocarbon measurements show that mineral soil carbon under a recovering temperate forest in South Carolina turns over twice as fast as carbon in undisturbed soil. The observed 12‐year turnover time influences the design and interpretation of CO2 fertilization experiments. Experiments conducted on formerly disturbed sites will show a soil carbon fertilization response considerably faster than experiments conducted on native sites. Calculating the soil carbon CO2 fertilization factor from observed increases in soil carbon requires values for the turnover time and inventory of active soil carbon. We also use the observed turnover time to estimate the rate of atmospheric carbon dioxide sequestration in soil following agricultural abandonment. Although using the observed turnover rate increases estimates of soil carbon uptake on abandoned land, the amount of carbon sequestered globally is minimal because the net area of land being abandoned is small. Copyright 1995 by the American Geophysical Union.

Full Text

Duke Authors

Cited Authors

  • Harrison, KG; Post, WM; Richter, DD

Published Date

  • January 1, 1995

Published In

Volume / Issue

  • 9 / 4

Start / End Page

  • 449 - 454

Electronic International Standard Serial Number (EISSN)

  • 1944-9224

International Standard Serial Number (ISSN)

  • 0886-6236

Digital Object Identifier (DOI)

  • 10.1029/95GB02380

Citation Source

  • Scopus