太湖流域单季稻的甲烷排放研究  

Methane Emission from Rice Paddy Field of Taihu Area

作　　者：熊效振[1,2] 沈壬兴[1,2] 王明星 郑循华[1,2] 王跃思 李晶[1,2] 

机构地区：[1]中国科学院大气物理研究所 [2]德国夫琅和费大气环境研究所

出　　处：《大气科学》1999年第1期9-18,共10页Chinese Journal of Atmospheric Sciences

摘　　要：根据１９９４～１９９６年太湖流域单季稻的ＣＨ４排放的观测资料，分析了该地区稻田ＣＨ４排放的日变化的一些统计特征，对排放的季节变化和年际变化及相关因子对排放的影响进行了分析和研究。结果表明：太湖地区单季稻的ＣＨ４排放的特征值为００７～０１１ｇ／（ｍ２·ｄ），而且存在巨大的年际变化，其中１９９５年的排放是１９９４年和１９９６年的５～７倍。与ＮＨ４ＨＣＯ３相比，施用尿素使甲烷的排放增加１０％～７０％。晒田使ＣＨ４的排放减少，土壤的扰动则使ＣＨ４的排放增加。文中对ＣＨ４的排放与水稻的生长的关系及温度的变化对排放的影响也进行了讨论。According to the measurement of CH 4 emission from rice paddy field of Taihu area during 1994 to 1996, some statistic characteristics of the daily variation of CH 4 emission are presented; the seasonal variation and annual variation of CH 4 emission, and the effects of related factors regulating CH 4 emission are analyzed too The results show that the representative value of CH 4 emission in Taihu area is 0 07～0 11 g/(m 2 ·d), but the annual difference is large, and the total emission in 1995 is 5～7 times of the emission in 1994 and 1996 Compared with the treatment of NH 4 HCO 3 , the use of urea increased the emission by 10%～70% Field baking lead to the decrease of CH 4 emission, however, the disturbance of the soil has increased CH 4 emission The relation of CH 4 emission with the growth of rice plant and the variation of temperature on CH 4 emission are also discussed in this paper

关 键 词：稻田 甲烷 排放率 季节变化 年际变化 太湖流域 

分 类 号：S153.62[农业科学—土壤学] S216.4[农业科学—农业基础科学]