Читать книгу Wetland Carbon and Environmental Management - Группа авторов - Страница 69

Wetland soils contain high concentrations of dissolved organic and inorganic carbon that can be exported to adjacent surface water and groundwater systems. Quantifying the export of dissolved forms of carbon requires accurate measures of water flow, which is especially challenging where flows are bidirectional (e.g., in tidal wetlands) or diffuse (that is, not in defined channels). The issue is further complicated by the fact that some – but not all – of the carbon exported from wetlands will end up in the atmosphere as CO₂ or CH₄. Therefore, accurately describing the climatic impacts of a wetland requires the accurate quantification of how much dissolved carbon is exported from the wetland and the ultimate fate of that carbon (that is, emissions to atmosphere vs. long‐term preservation) in downstream aquatic systems.