南京种子植物区系的初步分析

A Preliminary Analysis on the Seed Plants Flora of Nanjing

南京地区共有野生种子植物126科、543属、1 204种,科、属、种的多样性都不算丰富。植被类型以落叶阔叶林为主,地带性植被北亚热带常绿阔叶与落叶阔叶混交林在我们的调查中很少发现。地理成分较复杂,以温带成分和泛热带成分为主,过渡性明显,与附近的琅琊山区和大别山区区系地理成分基本相似。

There are 1204 species of wild seed plants in Nanjing district, which belong to 126 families and 513 genera, and the species diversity is not rich. The principal type of vegetation is deciduous broad--leaved forest, the zonal vegetation of Nanjing is the mixed broadleaf evergreen and deciduous forest, which is rare according to our field investigation. The geographical elements are complex, which is mainly to temperate components and pantropic components, so the geo- graphical elements have an obvious transitional feature. According to the comparison of flora in Nanjing and its neighboring areas, the authors find the geographical composition of flora in Nanjing, and Mt. Langya and Mt. Dabieshan are similar in general.