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地理科学  2009 

苏北盐沼DMS、CS2和CH4排放通量沿高程梯度的变化

, PP. 535-539

Keywords: 互花米草,CH4,DMS,CS2,海岸带盐沼

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Abstract:

在中国东部海岸带盐沼沿环境梯度采用静态箱技术原位测定CH4、DMS和CS2气体的通量。结果表明,苏北海岸带盐沼整体上表现为CH4、DMS和CS2气体的源,其中,互花米草带(Spartinaalterniflora)排放率最高。CH4、DMS和CS2排放率之间的正相关关系支持DMS是甲烷生产底物的推断。高等植物地上部分是CH4、DMS和CS2气体的重要源,但植物排放这些气体的机制还不清楚。盐沼CH4、DMS和CS2气体的净排放可能与盐沼丰富的有机质含量有关,有机质为土壤微生物提供充足的碳源和能量。

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