| 东北典型旱作农田N_2O和CH_4排放通量研究 |
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| 引用本文： | 黄国宏,陈冠雄,吴杰,黄斌,于克伟.东北典型旱作农田N_2O和CH_4排放通量研究[J].应用生态学报,1995(4). |
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| 作者姓名： | 黄国宏 陈冠雄 吴杰 黄斌 于克伟 |
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| 作者单位： | 中国科学院沈阳应用生态研究所陆地生态系统痕量物质生态过程开放实验室 |
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| 基金项目： | 国家攀登计划,辽宁省自然科学基金,中国科学院陆地生态系统痕量物质生态过程开放实验室基金 |
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| 摘 要： | 应用封闭式箱法技术测定了玉米、大豆田中Ｎ２Ｏ和ＣＨ４全年的通量变化．指出Ｎ２Ｏ排放有明显的季节变化和明显的日变化．大量的Ｎ２Ｏ排放发生在作物生长季节中．在冰雪溶化期和收割作物后也有一定量的Ｎ２Ｏ从土壤中排放．此外，实验结果也指出，玉米和大豆田作为大气ＣＨ４源或汇的作用不明显．
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| 关 键 词： | 氧化亚氮，甲烷，通量 |
N_2O and CH_4 fluxes from typical upland fields in northeast China |
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| Huang Guohong, Chen Guanxiong, Wu Jie, Huang Bin and Yu Kewei.N_2O and CH_4 fluxes from typical upland fields in northeast China[J].Chinese Journal of Applied Ecology,1995(4). |
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| Authors: | Huang Guohong Chen Guanxiong Wu Jie Huang Bin and Yu Kewei |
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| Abstract: | Closed chamber measurements of N2O and CH4 fluxes from soybean and maize fields at Shenyang Ecological Experimental Station show that the emission of N2O has significant diurnal and seasonal variations, and mainly occurs in the growing period of crops. N2O is also released from soil during thawing and after harvest. In addition, the net emission of CH4 from soybean and maize fields is very small, and hence, upland field as the sink or source of atmospheric CH4 is not significant. |
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| Keywords: | Nitrous oxide Methane Flux |
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