The relationship of sulfate-methane interface with the methane flux and the underlying gas hydrate;

The sulfate-methane interface is an important biogeochemical identification interface for the areas with high methane flux and containing gas hydrate.

In 2007,the enclosed chamber technique was used and the measurements on methane flux from Spartina alterniflora were taken during three periods(before the flood,in the course of rising and ebbing tide,and after the ebb) in the Shanyutan wetland which is the largest wetland in the Min River estuary region.

Effect of long-term fertilization on the methane oxidization and the methane emission in paddy soil;

A field experiment was used to investigate methane emission in rice-duck-fish complex ecosystem.

Methane emission from irrigated rice fields as affected by water ma nagement, organic amendment and rice cultivar was measured using an automatic sa mpling measuring system with a closed chamber method in 1995~1998.

By the effective analysis of coal thickness,coa quality,hydrological condition,hidden depth of the coal bed surrounding rock and so on on coal bed methane content in Daxing Well Field expounds slorag of coal bed methane regular pattern and evaluales the necessity and possibity of prospecting and developing of coal bed gas in this area.

It is analysed that the utilization of Ende powdered coal gas-making technology in methanol co-production process can result in a 20% high of CO 2 and a three to five times rise of methane content in gas in view of the characteristics of Ende powdered coal gasification and operational fluidized bed gasification parameters at hand.

The actual methane yield and methane content of biogas in anaerobic digestion were analysed and studied in this paper.