中国第三纪的栎类

被引:10
作者
江泽平
机构
[1] 中国林业科学研究院林业研究所北京
关键词
栎属; 第三纪;
D O I
暂无
中图分类号
学科分类号
摘要
栎属(Quercus L.)的化石最早见于始新世。早期的栎类为常绿种类,它们与现代种的亲缘关系难以确定。渐新世时落叶的栎类开始繁衍,这与当时全球气候不断恶化以及由此引起的高纬度地区栎类的南退有关。中新世是我国栎类发展的鼎盛时期,到上新世时,绝大多数现存种的原始类型已经出现,栎类的分布格局已与今日的面貌接近。新第三纪时,中亚荒漠的形成和喜马拉雅造山运动,对我国栎类的演化有重要影响。文中还分析了我国第三纪栎类与北美、欧洲同期栎类的关系。
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页码:397 / 408
页数:12
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