Part III Workshop Research Presentations Section 2: Non-forest Terrestrial Systems

Water, Air, and Soil Pollution

, Volume 70, Issue 1, pp 357-371

Analysis of agroecosystem carbon pools

  • C. Vernon ColeAffiliated withUSDA Agricultural Research Service Natural Resource Ecology Laboratory, Colorado State University
  • , Keith PaustianAffiliated withNatural Resource Ecology Laboratory, Colorado State University
  • , Edward T. ElliottAffiliated withNatural Resource Ecology Laboratory, Colorado State University
  • , Alister K. MetherellAffiliated withAg Research, c/o Soil Science Department, Lincoln University
  • , Dennis S. OjimaAffiliated withNatural Resource Ecology Laboratory, Colorado State University
  • , William J. PartonAffiliated withNatural Resource Ecology Laboratory, Colorado State University

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Abstract

We present analyses of major driving variable controls on soil C in agroecosystems. Historical changes in soil C storage in agricultural soils are characterized by large losses during transition from natural grasslands and forests. A major driver in more recent times is the steadily increasing rate of net primary production of major land areas in agriculture. Simulation and analytical models are used to predict trajectories and potential soil C storage under possible scenarios of changed management and climate. Database and analytical requirements for extrapolation from regional to global scales are outlined.