Nitrous oxide emissions from a subtropical agricultural field
N2O emissions have been increasing in recent years due to intensive agricultural practices.This study was conducted to evaluate N2O emissions from a subtropical paddy field of south China with closed static chamber and a gas chromatograph in situ in the second crop season.Gas samples were taken simultaneously from rice-involved and rice-free plots.It showed that diurnal variation of N2O emission was more regular at the booting stage.The diurnal mean N2O flux office-involved plot was higher than that office-free plot during flooding time but lower during the drying time.It showed no significant correlation between N2O flux and temperature.The N2O flux was affected by soil water.regime.Rice paddy field in growing season is a N2O source to atmosphere.
Paddy field Nitrous oxide Greenhouse gas Crop season
Hui Liu
School of Resource and Environment, Guangdong University of Business Studies, Guangzhou 510320, P.R.China
国际会议
厦门
英文
197-200
2012-12-28（万方平台首次上网日期，不代表论文的发表时间）