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Title:   Author  item
                                            LA SCALA, NEWTON - FCAV/UNESP, BRAZILitem
                                            LOPES, A - FCAV/UNESP, BRAZILitem
                                            Spokas, Kurtitem
                                            Archer, Daviditem
                                            Reicosky, Donald
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 7/19/2007
                                    Publication  Date: 7/19/2007
                                    Citation: La Scala, N., Lopes, A., Spokas, K.A., Archer, D.W., Reicosky, D.C. 2007. Short-term temporal changes of bare soil CO2 fluxes after tillage described by a first-order decay model. Proceedings of the International Symposium on Organic Matter Dynamics in Agro-Ecosystems. July 16-19, 2007, Poitiers, France. I:98-99.Interpretive Summary:
                                Technical Abstract: A model is proposed to explain soil carbon (C) emission after tillage as a function of the non-disturbed emission. The model is based on a first order soil C decay assumption and assumes that tillage introduces an additional labile C to the mineralization process due to aggregate disruption. Predicted and observed values show good agreement and coefficients extracted from the model are coherent with expectation. The advantage of this method is that temporal variability of tillage-induced emissions can be described by one analytical function that only considers the undisturbed emission plus an exponential term in time modulated by tillage and environmental parameters.


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