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Task 1, Subtask 3: Greenhouse gas fluxes and dissolved carbon export |
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A better understanding of factors controlling losses of carbon from agricultural soils to the atmosphere and to infiltrating waters is critical if we are to manage soil carbon budgets to ameliorate global warming. Group C of the CASMGS Task 1 deals with the basic processes and mechanisms that control greenhouse gas fluxes from agricultural soils as well as inorganic and organic carbon export via infiltrating waters.
Within CASMGS, Task 4 is devoted to improving our ability to monitor gas exchange rates between soils and the atmosphere. However, the actual biophysical controls on the reaction rates controlling gas exchange remain obscure and hence deserve investigation under Task 1. Dissolved carbon losses via leaching and infiltration have generally been ignored in soil carbon balances even though these can be important terms. Therefore subtask 3 research will include an investigation of carbon exports via leaching in relation to the overall soil carbon budget, and how such exports could be affected by management of soil water status and limestone amendments. Participants: |
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