Jaclyn Hatala, Dennis Baldocchi, Matteo Detto
Proceedings of the 14th International Peat Congress
agricultural-peatland, carbon-dioxide-flux, methane-flux, restoration
Theme X. Peatland carbon budgets and greenhouse gas (GHG) fluxes
The peatlands of the Sacramento-San Joaquin Delta in California represent the largest estuary on the Pacific coast of the Americas, but were drained in the mid- to late-19th century for agriculture. Since drainage, the Delta has experienced extreme rates of soil subsidence. Conversion back to flooded conditions may reverse subsidence by reducing soil CO2 flux. However, land-use conversion also highlights key trade-offs between CO2 sequestration, CH4 emission, and increased evaporation. This study uses the eddy covariance technique to measure CO2, CH4, and H2O fluxes from drained and flooded, agricultural and restored peatlands to assess changes in ecosystem fluxes with land-use conversion.