概括
黄石湖 黄石湖 黄石湖
科学领域:
- 古植物学是古植物学.
- 四季地质地质学四季地质地质学
- 气候科学 气候科学
背景情况:
- 威斯康星州晚期 (皮内代尔) 冰川形成了黄石的景观.
- 了解植被动态对于重建过去的气候至关重要.
研究的目的:
- 为了重建黄石湖冰期后的植被历史.
- 根据植被变化推断气候趋势.
主要方法:
- 一个花粉图的放射性碳测年.花粉图.
- 对花粉组合的分析以确定植被类型.
主要成果:
- 晚期冰川原公园区 (松树-白皮松树) 过渡到小木松树林.
- 这种快速的植被转移发生在大约11,550年前的碳-14年.
- 洛奇波尔松树林主导了冰期后的时间,变化很小.
结论:
- 大约在11,550年前,黄石发生了显著的变暖趋势.
- 植被变化为冰川退缩后的气候变化提供了证据.
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