常绿阔叶林内不同高度级、不同径级和不同样方斑块内的树种数都与树木密度呈显著的正相关关系。
There was a significant positive correlation between tree species abundance and tree density for trees of different height classes.
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.
常绿树种的光合速率在秋季最高,大量换叶期最低,冬季仍有一定的净光合量。
The net photosynthesis of the evergreen species was the highest in autumn and the lowest when the plants were in the period of concentrate change of leaves.
选取南京地区已引种成功的6种常绿阔叶树种,运用越冬适应性观察与电导法作为对比测试手段,分析这些树种的抗寒能力。
Wintering adaptability and electric conductivity were used to analyze the ability of 6 evergreen broad-leaved species to withstand the rigors of low temperature.
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.
植被基带群落中,在物种数量、区系成分和重要值方面,常绿和落叶阔叶树种所占的比例都相差无几。
Evergreen and deciduous broad-leaved tree species were almost equivalent in quantity and importance values in the basal vegetation zone.
两年间落叶树种叶子的重量损失大于常绿树种。
Weight losses of deciduous leaves were larger than those of evergreen leaves during two years.
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.
骨干树种中有常绿树种3种(乔木1种)、落叶乔木24种、落叶灌木14种,属于乡土树种的14种,外引树种占其3/4。
Among the 41 ones there are 3 evergreen species, 24 broad leave tree species, 14 shrubs; 14 of them from local species, 3/4 from outside areas.
为改变这种状况,丰富城市色彩,引进常绿树种资源是一项非常有意义的事业。
To change this situation, rich urban color, it is a great cause to introduce species of evergreen trees.
为改变这种状况,丰富城市色彩,引进常绿树种资源是一项非常有意义的事业。
To change this situation, rich urban color, it is a great cause to introduce species of evergreen trees.
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