Soil atmosphere flux of CO2 ranged from 0.85 to 3.20 mmol m−2h−1 in this area, in broad agreement with other static chamber measurements in mangrove forests of China (0.56–20.56 mmol CO2 m−2h−1,Chen et al.,2010) but significantly higher than that from the secondary mangrove forests of eastern Thailand (0.027–0.052 mmol CO2 m−2h−1, Poungparn et al., 2009).