贵州中三叠世生物生态分异初探

Discussion on Mid-Triassic Ecological Differentiation in Guizhou

贵州中三叠世生物群属特提斯生物地理区 ,但在台地、台地边缘、台前斜坡—陆棚、浊积盆地等不同沉积单元中 ,各有不同的生物组合和特征分子。按生物组合及其赋存岩性特征 ,将其归并为底栖和浮游两个生态区。这种不同生物组合和特征分子出现在不同的沉积单元 ,是生物生态分异的结果 。

Guizhou's fauna of middle Triassic belongs to those living in Tethys. In terms of nature of the pieces, there are some diversity in different geographic units such as platform, margin of platform, marginal slope, turbidite basin. According to the assemblage and host rock, the area where the fauna lives can be divided into bottom_living and planktonic ecotopes. That the different assemblage and distinct pieces occur in different sedimentary units is a result of ecologic differentiation rather than that of biogeographic diversity.