生态环境学报2012，Vol.21Issue(1)：55-58,4.
红壤丘陵区冬闲稻田CH4和N2O排放通量的研究
CH4 and N2O fluxes from winter fallow paddy fields in a hilly area of southeast China
摘要
Abstract
CH4 and N2O are two main greenhouse gases, which are closely related to global climate change. How to reduce their emissions has become a hot spot of the current research. Southwest and South China, it is quite common to have paddy fields kept in fallow in winter, but it is not to put under study CH4 and N2O regulations of the emission from these paddy fields. In this study, Yingtan in Jiangxi Province of China is selected as a site for in-situ observation of their emissions using. By the method of static opaque chamber/modified gas chromatograph, the results show that CH4 and N2O flux was 0.03 mgCH4·m-2·h-1and 3.27 μgN2O-N·m-2·h-1, respectively, in winter and had little to do with soil temperature at 5cm in depth and rainfall. The overall GWP of CH4 and N2O emitted from the winter fellow paddy fields was 7.58 gCO2-eq·m-2, to which CH4 and N2O contributed 2.33 gCO2-eq·m-2 and 5.25 gCO2-eq·m-2, respectively. The findings demonstrate that the N2O emission from winter fallow paddy fields is so important in GWP that it cannot be ignored.关键词
冬闲稻田/甲烷/氧化亚氮/排放通量Key words
Winter fallow paddy fields/ CH4/ N2O/GWP分类
资源环境引用本文复制引用
余佳,刘刚,马静,张广斌,徐华,蔡祖聪..红壤丘陵区冬闲稻田CH4和N2O排放通量的研究[J].生态环境学报,2012,21(1):55-58,4.基金项目
中国科学院战略性先导科技专项(XDA05020200) （XDA05020200）
国家自然科学基金项目(40971154和41071169) （40971154和41071169）
