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海洋科学  2011 

黄海北部海域沉积物反硝化细菌数量及反硝化速率的季节变化

, PP. 48-51

Keywords: 反硝化细菌,反硝化速率,季节变化,北黄海

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Abstract:

用乙炔抑制法和最大或然数(mostprobablenumber,MPN)法对黄海北部海域沉积物反硝化速率及反硝化细菌数量的季节变化进行了研究,结果表明,该海域反硝化速率在夏季最大,范围在3.2~7.5μmol/(m2·h)之间,平均值为4.85μmol/(m2·h);而在春、秋季其范围分别为0.26~2.65μmol/(m2·h)和1.21~4.12μmol/(m2·h)。该研究海域3个季节反硝化细菌数量差别较大,春、夏、秋季分别在1.78×104~8.12×104,1.18×106~6.18×106和0.72×105~4.50×105个/g之间。春、秋两季反硝化速率和反硝化细菌数量之间呈显著性正相关,相关系数分别为0.759和0.750(P<0.05)。本结果可为黄海北部海域氮循环机制研究提供重要参考。

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