Abstract: The effect of soil nutrient augmentation via nitrogen deposition or fertilization on the processes of storing, releasing and re-absorbing of methane (CH₄) carbon dioxide (CO₂) and nitrous oxide (N₂O) greenhouse gases (GHG) in soil ecosystems are poorly understood. This study described an original field experiment for measuring soil GHG flux at nitrogen application rates of N0 0 kg(N)·hm^-2, N200 200 kg(N)·hm^-2, N400 400 kg(N)·hm^-2and N600 600 kg(N)·hm^-2 in winter wheat/summer maize double cropping system in the Piedmont Plains of Mount Taihang. CH₄, CO₂ and N₂O emissions from soils under the winter wheat/summer maize rotation system were measured from July 2008 through June 2010 using the static transparent chamber and gas chromatography technique. The results showed that soils under winter wheat/summer maize ecosystems served as CH₄ sink, and CO₂ and N₂O sources. With increasing nitrogen application, CH₄ absorption rate decreased and CO₂ and N₂O flux rates increased. In winter wheat season, CH₄ absorption rate under N0 treatment was significantly higher than under other nitrogen treatments. Both CO₂ and N₂O emission flux rates under N600 treatment were significantly higher (P<0.05) than under N0 treatment. Nitrogen fertilization and irrigation sharply induced CO₂ and N₂O peak flux emissions and decreased CH₄ peak absorption. Rising soil temperature, precipitation or alternating wet/dry weather increased soil N₂O and CO₂ emission flux rates. Negative N₂O flux rates were observed under low temperature and high evaporation conditions in N0 application treatments in winter. CH₄ emission accumulation for 2008~2009 under N0, N200, N400 and N600 treatments was -1.42, -0.75, -0.82 and -0.92 kg·hm^-2·a^-1, respectively. For 2009~2010, it was -2.60, -1.47, -1.35 and -1.76 kg·hm^-2·a^-1, respectively. CO₂ emission accumulation for 2008~2009 under N0, N200, N400 and N600 treatments was 15 598, 19 346, 21 456 and 29 013 kg·hm^-2·a^-1, respectively. For 2009~2010, it was 10 318, 11 474, 13 984 and 20 639 kg·hm^-2·a^-1, respectively. Then N₂O emission accumulation for 2008~2009 under N0, N200, N400 and N600 treatments was 1.05, 2.16, 5.27 and 6.98 kg·hm^-2·a^-1, respectively. Also for 2009~2010, it was 1.49, 2.31, 4.42 and 5.81 kg·hm^-2·a^-1, respectively.