Modeling Impacts of Management on Carbon Sequestration and Trace Gas Emissions in Forested Wetland Ecosystems
| Authors: | Changsheng Li, Jianbo Cui, Ge Sun, Carl Trettin |
| Year: | 2004 |
| Type: | Scientific Journal |
| Station: | Southern Research Station |
| DOI: | https://doi.org/10.1007/s00267-003-9128-z |
| Source: | Environmental Management |
Abstract
A process-based model, Wetland-DNDC, wasmodified to enhance its capacity to predict the impacts ofmanagement practices on carbon sequestration in and tracegas emissions from forested wetland ecosystems. The modificationsincluded parameterization of management practices(e.g., forest harvest, chopping, burning, water management,fertilization, and tree planting), inclusion of detailed anaerobicbiogeochemical processes for wetland soils, and utilization ofhydrological models for quantifying water table variations. A150-year management scenario consisting of three stages ofwetland forest, deforestation/drainage, and wetland restorationwas simulated with the Wetland-DNDC for two wetlandsin Minnesota and Florida, USA. The impacts of the managementscenario on carbon ecosystem exchange, methaneemission, and nitrous oxide emission were quantified and assessed.The results suggested that: (1) the same managementscenario produced very different consequences onglobal warming due to the contrast climate conditions; and (2)methane and nitrous oxide fluxes played nonnegligible roles inmitigation in comparison with carbon sequestration