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海洋通报  2011 

南海沉积物沉积有机态Fe与Fe限制的分析

DOI: 10.11840/j.issn.1001-6392.2011.3.011, PP. 302-309

Keywords: 古生产力,连续提取法,沉积有机态Fe,Fe限制

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Abstract:

Fe限制的研究对于探讨全球CO2变化及解决“温室效应”具有重要的意义。南海兼具开阔大洋和边缘海的特征,其古生产力的演变对区域及全球气候变化的研究具有重要作用。本文采用连续提取法对两个南海柱样沉积物中的Fe,Ba,Al等主要金属元素进行了形态分析,并将两个站位沉积物中沉积有机态Fe与Al/Ti比值、TOC、生源Ba等古生产力指标做进一步的相关分析。结果表明,残渣态为沉积物中金属元素的主要存在形态,而沉积有机态Fe与古生产力存在正相关关系。这表明了沉积有机态Fe与古生产力之间存在的关系,可能反映了所研究海域的海洋初级生产受到了Fe限制。

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