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应用生态学报 ›› 1995, Vol. 6 ›› Issue (4): 383-386.

• 研究论文 • 上一篇    下一篇

东北典型旱作农田N2O和CH4排放通量研究

黄国宏, 陈冠雄, 吴杰, 黄斌, 于克伟   

  1. 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, 沈阳 110015
  • 收稿日期:1995-01-25 修回日期:1995-05-15 出版日期:1995-10-25 发布日期:1995-10-25
  • 基金资助:

    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

N2O and CH4 fluxes from typical upland fields in northeast China

Huang Guohong, Chen Guanxiong, Wu Jie, Huang Bin, Yu Kewei   

  1. Laboratory of Ecological Process of Trace Substance in Terrestrial Ecosystem, Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1995-01-25 Revised:1995-05-15 Online:1995-10-25 Published:1995-10-25

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。

关键词: 氧化亚氮, 甲烷, 通量, 粗放经营, 多样性, DGGE, 土壤细菌和真菌群落, 毛竹, 种植时间, 有效磷, 速效钾

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.

Key words: Nitrous oxide, Methane, Flux, extensive management, diversity, DGGE, soil bacterial and fungal communities, Phyllostachys edulis, cultivation history, available P, available K