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(NAS Colloquium) Carbon Dioxide and Climate Change (1997) / Chapter Skim
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Pages 12-19

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From page 12...
... Keeling, held November 13-15, 1995, at the National Academy of Sciences, Irvine, CA. Potential responses of soil organic carbon to global environmental change SUSAN E
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From page 13...
... Colloquium Paper: Trumbore Much of the work in understanding and modeling soil C is the study of relative decomposition rates for various organic substrates and organic matter byproducts. While organic matter may actually be a continuum, best represented by a distribution of turnover times (39)
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From page 14...
... 8286 Colloquium Paper: Trumbore The ~4C age of passive organic matter may give clues to the mechanisms that cause C to persist in soil over millennial time scales. Three approaches to isolating the properties of passive C from the bulk soil have been used.
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From page 15...
... Colloquium Paper: Trumbore collected in 1959 and 1992 (Fig.
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From page 16...
... The presence of live roots to depths greater than 15 m in 40-m deep soils of seasonal tropical forests in eastern Amazonia (74) drives a fast carbon cycle to depths of at least 8 m (62, 74~.
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From page 17...
... According to these calculations, interrannual variations in net primary production may cause significant interrannual variability in soil-atmosphere Moisture changes. Soil organic carbon inventories increase regionally from arid to wet environments (2, 46)
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From page 18...
... (1995) in Global Change and Its Effects on Soil Organic Carbon Stocks, ed.
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From page 19...
... (1991) in Use of Stable Isotopes in Soil Organic Matter Studies (International Atomic Energy Agency, Vienna)
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Key Terms

  • global environmental
  • soil organic
  • potential responses
  • environmental change
  • organic carbon

  • change susan
  • carbon cycle


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