Methane production, oxidation, transportation rate and pool in sediments of an Avicennia marina mangrove at Dongyu, Xiamen
Methane production, oxidation, transportation rate and pool were determined in sediments of an Avicennia marina mangrove at Dongyu, Xiamen. The flat pattern of methane production was inner-flat>mid-flat>out-flat and the values in winter and autumn were lower than that in summer and spring. The spatial and temporal patterns of methane oxidation and pool were similar to those of methane production. The values of methane production, oxidation and pool averaged from all flats and seasons were 9.11, 7.58 mg/(m2*d) and 27.07 mg/m2, respectively. The ratios of methane oxic oxidation to total oxidation in inner-flat, mid-flat and out-flat were 99.7%, 59.1% and 75.4%, respectively, higher than those of anoxic methane oxidation. Methane transportation rate was highest in summer and lowest in winter and the value averaged in all flats and seasons was 17.06%.