南京地区地处亚热带北缘,是一些常绿阔叶树种自然分布的北界。通过对南京地区常绿阔叶树种的实地考察,表明南京地区有12种自然分布的常绿阔叶树种;目前园林上引种并已应用的有25种。另外,引种了109种能够露地栽培的常绿阔叶树种,其中乔木28种,灌木77种,藤本4种。可以认为南京地区是耐寒常绿阔叶树种引种分布的关键地区。

Nanjing area is the northern boundary of northern subtropical zone where some evergreen broad-leaved species are distributed in. The resources of the cold-resistant evergreen broad-leaved species were investigated in Nanjing, Jiangsu Province. Now, about 12 tree species distribute in nature and about 25 tree species have been planted in the city as garden plants. In addition, over 109 tree species were introduced in Nanjing. Of them, 28 species are arbors, 77 species shrubs, and 4 species vines. It can be considered that Nanjing is the key area of introduction and distribution of cold-resistant evergreen broad-leaved species.