Organic matter pools

Recurrent is the lack of adequate techniques to assess carbon flows through the plants and microbes into soil organic matter (151). Most important is the development of techniques and protocols to separate rhizosphere from nonrhizosphere soil as well as possibly to facilitate analyses of soil carbon dynamics. The use of carbon isotopes, and, where possible, application of double labeling with C and C, seems inevitable in order to separate the contribution of different substrates to the formation of the soil organic matter pool and to get to an understanding of the ecological advantage of exudates and rhizodeposits. 

Paul EA, Clark FE (1989) Soil microbiology and biochemistry. Academic, New York Paul EA, Follet RF, Leavitt SW, Halvorson A, Peterson GA, Lyon DJ (1997) Radiocarbon dating for determination of soil organic matter pool sizes and dynamics. Soil Sci Soc Am J 61 1058-1067... 

Wander MM, Traina SJ, Stinner BR, Peters SE (1994) Organic and conventional management effects on biologically active soil organic matter pools. Soil Sci Soc Am J 58 1130-1139... 

The fraction of the organic carbon pool in seawater that is The fraction of the organic matter pool in seawater that is... 

Nichols, K. A., and Wright, S. F. (2006). Carbon and nitrogen in operationally defined soil organic matter pools. Biol. Fertil. Soils 43, 215-220. 

Figure 3.1 Decomposition and carbon turnover in soil A conceptual diagram summarizing the main elements of the initial Rothamsted carbon model (Jen-kinson 1971). To this we have added other small, but potentially functionally important, compartments the volatile organic carbon and the dissolved organic carbon derived during both decomposition of litter and exudation from plants. An inert organic matter pool is added as this appears in later versions of the Rothamsted model.

Beare M. H., Cabrera M. L., Hendrix P. F., and Coleman D. C. (1994a) Aggregate-protected and unprotected organic matter pools in conventional- and no-tillage soils. Soil Sci. Soc. Am. J. 58(3), 787-795. 

Eang, C., P. Smith, J. B. Moncriett, and J. U. Smith. 2005. Similar response of labile and resistant soil organic matter pools to changes in temperature. Nature 433 57-59. 

---