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首页> 外文期刊>Chinese science bulletin >Deep sea pollen record during 12--1.6 Ma from the southern South China Sea and its response to environmental change
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Deep sea pollen record during 12--1.6 Ma from the southern South China Sea and its response to environmental change

机译：南海南部12--1.6 Ma期间深海花粉记录及其对环境变化的响应

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摘要

Based on deep-sea pollen results (512--76 m) from OOP Site 1143 in the southern South China Sea(SCS), the climate and vegetation evolution sequence on the surrounding islands and the exposedcontinental shelf are discussed. The pollen records show that the pollen influx was quite low before8.15 Ma and increased dramatically afterwards. The influx changes can be ascribed, on one side, totectonics deformations around the southern SCS resulting in rapid uplift of islands and subsequentincrease of the sediment rates and pollen influx and on the other side to climate cooling and monsoonenhancement. Around 2.63 Ma was another obvious boundary, the increasing of pollen and sporesinflux since this time was mainly related to global climate cooling. Spectrum analysis of pollen influxvalues shows that 2 Ma, 0.67 Ma, and 0.19--0.17 Ma cycles existed during 12--3.0 Ma, while 0.1 Ma and46.9 ka cycles existed during 3.0--2.0 Ma.
机译：基于南海南部1143号OOP站点的深海花粉结果（512--76 m），讨论了周围岛屿和裸露的大陆架的气候和植被演化序列。花粉记录表明，花粉流入量在8.15 Ma之前非常低，而在此之后急剧增加。涌入量的变化一方面可以归因于南海南部地区的构造变形，从而导致岛屿的迅速隆升，进而导致沉积率和花粉涌入量的增加，另一方面也可以归因于气候的冷却和季风的增强。另一个明显的边界是在2.63 Ma附近，因为这次的花粉和孢子涌入量的增加主要与全球气候变冷有关。花粉流入值的频谱分析表明，在12--3.0 Ma期间存在2 Ma，0.67 Ma和0.19--0.17 Ma周期，而在3.0--2.0 Ma期间存在0.1 Ma和46.9 ka周期。

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