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通过分析地球历史上的非生物灾变事件和生物事件发现,群集出现常伴随着群集消失,这可见于显生宙许多纪间界线附近,那里往往存在着地球灾变的标志。如同群集消失多由地球灾变引起一样,地球灾变亦是群集出现的一个重要动因。在灾变期,地球表层一般可分为非灾变区、边缘灾变区和中心灾变区。非灾变区生物以背景消失和背景出现为主,中心灾变区一般以群集消失尤其是群集绝灭为主,而边缘灾变区则既有群集消失又有群集出现尤其是群集起源,是进化的活跃地区,且其进化可称为巨进化。
By analyzing the abiotic and catastrophic events in the history of the earth, it is found that clusters often disappear with clusters, which can be seen near the boundary of many Phanerozoic disciplines, where the signs of the catastrophe of the earth often exist. Just as the disappearance of the cluster is caused by the catastrophe of the earth, the catastrophe of the earth is also an important driver of the emergence of the cluster. During the catastrophic period, the Earth’s surface can be divided into non-catastrophic areas, marginal catastrophic areas and central catastrophic areas. In the non-catastrophe area, the background disappears and the background appears. The catastrophic area in the center is mainly the disappearance of the cluster, especially the extinction of the cluster, while the edge-catastrophe area is the active evolutionary evolution since both the cluster disappears and the cluster appears, especially the cluster origin Region, and its evolution can be called a huge evolution.