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。
It can be considered that Nanjing is the key area of introduction and distribution of cold-resistant evergreen broad-leaved species.
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。
Nanjing area is the northern boundary of northern subtropical zone where some evergreen broad-leaved species are distributed in.
通过对8种常绿阔叶树种和对照种(香樟)的叶结构特征比较，分析它们对光照变化的适应特性。
The adaptation to light of 8 evergreen-broad trees and control tree (Cinnamomum camphora) were analyzed by comparing their leaf structural characteristics.
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