江西木兰科植物区系地理分析

对江西木兰科植物7属23种的地理分布和区系特征进行了分析。属的分布区类型可划分为：热带亚洲分布、东亚一北美间断分布和中国特有分布。种的分布区类型可划分为：热带亚洲分布、东亚分布和中国特有分布。江西木兰科植物可划分为赣北、赣西北、赣西南、赣南、赣东南、赣东北共6个分布区。该区系以亚热带成分为主，具有种类丰富、区系成分复杂、多型性突出、特有现象较显著和与周边省份联系较密切等特点，属木兰科植物现代分布中心边缘分化比较强烈的区域之一。

Floristic analysis of Magnoliaceae in Jiangxi

The geographic distribution and floristic characteristic of Magnoliaceous 7 genera and 23 species in Jiangxi are studied in this paper.First,the distribution-patterns of genera are divided:Tropical Asia,Eastern Asia-North America and Endemic in China,and the distribution-patterns of species are divided:Tropical Asia,Eastern Asia and Endemic in China.Then the geographical distribution of Magnoliaceae in Jiangxi can be divided into 6 regions,i.e.northern,northwestern,southwestern,southern,southeastern,northeastern.In addition,the flora of Magnoliaceae in Jiangxi,in which the subtropical elements are dominant,has the characteristics of richness in species,complexity in floristic elements,diversity in forms,distinction in endemic and comparatively close relationship to adjacent provinces.Jiangxi is one of the strongly differentiating fringe regions of the contemporary distribution center of Magnoliaceae.