摘 要(英文)：The N2O fluxes from soils of three types of forest with different stages of succession in Dinghushan (monsoon evergreen broad-leaved forest, coniferous and broad-leaved mixed forest and pine forest) were observed in situ for one year using static chamber-gas chromatograph technique. In order of N2O amount, these three types of forest was monsoon forest >mixed forest >pine forest. The difference of N2O flux among the different forests had close correlation with their soil properties; litter in the monsoon forest of lower C/N ratio had more obvious promotion action on the microbe process of N2O production in soil. On the whole year, the seasonal change of N2O flux from soil of pine forest was not obvious, but the N2O fluxes from soils of mixed forest and pine forest had dominant driving effect of precipitation in rain season.The statistic analysis showed that the key factor affecting the N2O flux from soil in this area is soil moisture.
鼎湖山主要森林生态系统地表N2O 通量