Estimation of Methane and Nitrous oxide emission from mangrove plantation ecosystem

Abstract

The emission of CH4 and N2O from mangrove plantation area were important for evaluation of carbon stock in an implementation of a mangrove CDM project. Emission rate of CH4 and N2O from non-mangrove ecosystem (wetland and fresh water et. al) for mangrove plantation area were from -90 to 36648 µmol CH4 m-2 day-1, from -41 to 499 µmol N2O m-2 day-1. Discrepancies exist in the emission of CH4 and N2O obtained from the other ecosystem due to environmental condition (high loading and salinity). We estimated emission of CH4 and N2O from our planted mangrove area in Vietnam by observed data, which suggests that total emission of CH4 and N2O from mangrove ecosystem was approximately 10-20% of total carbon stock in mangrove forest over 21 years integration from a mangrove plantation.