Analysis of wetland landscape pattern change and its driving mechanism in Jilin western part;

Effect of paddy field drainage on Carex lasiocarpa mire wetland;

N 2O concentration and its flux were measured in Sanjiang Plain wetland,from August to September in 2001,by using in situ closed chamber technique.

Effects of exogenous nitrogen input on the CH_4 and N_2O fluxes in freshwater marshes;

The ecosystem respiration was constrained by temperature,nutrient(particularly N) availability and plant growing-status in freshwater marshes.

To understand the influence of nitrogen fertilization on the carbon balance in the freshwater marshes,we measured the CO_2 and CH_4 emissions as well as net ecosystem exchange(NEE) of CO_2 using the static chamber and gas chromatogram technique in situ over Deyeuxia angustifolia wetland in Sanjiang Plain.

Dynamic changes of mire landscape in Northeast China;

N_2O flux from the mire in Ruoergai Plateau;

CO_2 fluxes in mire and grassland on Ruoergai plateau;

Seasonal dynamics of dissolved organic carbon and nitrogen and correlativity between their concentrations and methane flux in the freshwater marsh;

Effects of marsh reclamation on methane and nitrous oxide emissions;

Decomposition and nutrient dynamics of marsh litter in the Sanjiang Plain, China;

Methane emission from marsh wetland and methane concentration in near ground of the sanjiang plain,China;

Horizontal movement rule of nitrate nitrogen in Xianghai marsh wetland soil;

Space-time change of marsh wetland in Liaohe delta area and its ecological effect;