| 利用条件采样法在常熟稻田测定N2O大气垂直通量初步观测结果 |
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| 引用本文： | 丁国安,刘晶淼,颜鹏,王木林,王淑凤,程红兵,孟昭阳,程彦杰,逯昌贵,于海青,温德永,徐敬.利用条件采样法在常熟稻田测定N2O大气垂直通量初步观测结果[J].应用气象学报,2004,15(4):456-467. |
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| 作者姓名： | 丁国安 刘晶淼 颜鹏 王木林 王淑凤 程红兵 孟昭阳 程彦杰 逯昌贵 于海青 温德永 徐敬 |
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| 作者单位： | 中国气象科学研究院, 北京 100081 |
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| 基金项目： | 国家自然基金会重大项目 498992 73资助 |
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| 摘 要： | 1999年在常熟农业生态站试验稻田于水稻主要生长季, 利用进口的条件采样装置对水稻低层大气N2O的垂直通量进行了观测, 并在2000年做了补充观测。结果如下:各生长季测定的N2O垂直通量值最多出现在0～2.0 mg·m-2·h-1之间;N2O垂直通量平均日变化最大值出现在下午;插秧期和收割后N2O垂直通量是各个生长季中最小的;观测到N2O负通量现象的出现;在稻田用条件采样技术观测到的低层大气N2O垂直通量大于国内用箱式法观测报道的土壤N2O排放通量。
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| 关 键 词： | N2O 条件采样法 低层大气 垂直通量 |
| 收稿时间： | 2002-12-18 |
| 修稿时间： | 2002年12月18 |
Preliminary Results of N2O Flux Measurement in Low Atmosphere at Rice Paddy in Changshu Using Conditional Sampling |
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| Ding Guoan,Liu Jingmiao,Yan,Peng,Wang Muling,Wang Shufeng,Cheng Hongbing,Meng Zhaoyang,Cheng Yanjie,Lu Changgui,Yu Haiqing,Wen Deyong,Xu Jing.Preliminary Results of N2O Flux Measurement in Low Atmosphere at Rice Paddy in Changshu Using Conditional Sampling[J].Quarterly Journal of Applied Meteorology,2004,15(4):456-467. |
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| Authors: | Ding Guoan Liu Jingmiao Yan Peng Wang Muling Wang Shufeng Cheng Hongbing Meng Zhaoyang Cheng Yanjie Lu Changgui Yu Haiqing Wen Deyong Xu Jing |
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| Affiliation: | Chinese Academy of Meteorological Sciences, Beijing 100081 |
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| Abstract: | In the period from 1999 to 2000, the N2O vertical flux in the low atmosphere during the main growing seasons of rice was measured using conditional sampling method over a rice paddy at Changshu Agriculture Ecological Station. The measurements indicate that N2O vertical flux was mainly between 0~2.0 mg·m-2·h-1, and the maximum daily averaged N2O vertical flux was observed in the afternoon. The N2O vertical flux in the transplant rice seedling period and reaping period was minimum among all the growing seasons. In these measurements, the minus N2O vertical flux also observed in some cases. The N2O vertical flux by conditional sampling technique was bigger than that measured by Chamber method reported in some domestic journal papers. The reason of this difference between the two methods needs further study. |
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| Keywords: | N 2O Conditional sampling Low level atmosphere Vertical flux |
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