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台湾海峡真光层有机碳动力学研究──DOC大幅度的日变化

, PP. 57-65

Keywords: 溶解有机碳(DOC),台湾海峡,动力学,日变化

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Abstract:

1994年8月和1995年2月在台湾海峡对DOC作定点连续观测,发现DOC日变化很大(2~4mg/dm3),且变化的幅度有季节差异和空间差异;DOC昼夜变化的总的规律是白天比晚上高,夜晚始终处于低值;依据DOC的昼夜变化可将DOC分为DOCnew和DOCold两部分;D0Cnew在真光层中快速地产生、消耗、再循环;DOCold则相对稳定,可从真光层底部输出;DOC的快速变化表明DOC的产生和被细菌消耗利用的速度都非常快.文中还尝试快速富丽叶变换(FFT)来分离引起DOC日变化的物理因子和生物因子,并依据实验结果讨论了初级生产力,微生物对DOC的利用,DOC输出生产力等问题.

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