中国石炭纪生物礁造礁群落演化

中国石炭纪造礁群落是弗拉斯期—法门期生物绝灭事件后新兴起的。该群落在早期演化过程中经历了形成、发展、完善和衰落的过程,构成一个群落演化旋回。晚期又开始新一轮的旋回,群落的二分性十分显著。显然,石炭纪造礁群落代表一个不连续的演化过程。

Evolution of the Carboniferous Reef Communities in China

The Carboniferous reef communities in China came into being only after the Frasnian-Fa-mennian mass extinction event. They can fall into five communities; the coral-bryozoan community of the Datangian stage,the chaetetid-coral community of the Weningian stage and the phyl-loid algal community, cyanobacteria-tubiphytes community and red algal community of the Mapingian stage. Their early evolution went through the construction, development, perfection and decline which made up a cycle. In the late stage,the communities began a new evolution cycle. The bipartite feature of the communities is very conspicuous. It is evident that the Carboniferous reef communities represent a discontinuous process of community evolution.