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海洋沉积磷的减少与冰期大气CO_2降低的联系 被引量:1

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摘要 从南海北部陆坡沉积物中提取的有关磷的环境与生物地球化学信息显示,陆源磷对海洋的供应量是基本恒定的,不同深度磷含量的变化是受气候和环境变化影响的结果.根据沉积物中磷与碳酸钙、Cd含量随深度变化的趋势相反,以及通过化学平衡计算得到的海水中CO2与PO43?的消长关系,表明了海洋沉积磷的积累与大气CO2的变化相关联,沉积磷的积累量减少和碳酸钙含量增加,可能是导致冰期大气CO2浓度降低的一个关键性因素.
出处 《中国科学(D辑)》 CSCD 北大核心 2005年第11期1053-1059,共7页 Science in China(Series D)
基金 国家自然科学基金资助项目(批准号:49973032 40172106)
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共引文献26

同被引文献39

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