| Minjiang Estuary Wetland is one of the most important natural wetlands in Fujian Province. Through using the closed black chamber-gas chromatograph techniques to monitor the methane emission fluxes and the major environmental influencing factors in the main experimental area - Shanyu Tideland, which is the biggest tideland in Minjiang estuary area, and to analyse the samples about 1674 in laboratory, this paper studies the seasonal dynamic of methane emissions from the Cyperus malaccensis Wetland and the barren wetland, the daily dynamic of methane emissions from the Cyperus malaccensis Wetland and the relationship between methane emission and the major environmental influencing factors. Grey Correlation Analysis, Correlation Analysis, Regression Analysis, Paired-Samples T Test and Cluster Analysis Method are applied in this paper. And main results are as follow:(1) The efficiency of transport ways for methane decides the model of daily dynamic of methane emission.(2) The status of temperature affected on methane emission is usually substituted by other environmental influencing factors in the daily process.(3) The temperature and plants have great and positive effect on seasonal dynamic of methane emission, which regards the 2-crest- model in the Cyperus malaccensis Wetland. On the contrary, the model, which shows one crest in the barren wetland, is controlled only by temperature.(4) Compared by the Cyperus malaccensis Wetland, the more methane emission in the barren wetland contributes to the more anaerobic condition and the immigration of methane from other place.(5) To the methane emission, the temperature and plants are the two most important factors to its seasonal dynamic and salinity cause the variation in a tide cycle.
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