• 常绿阔叶林内不同高度、不同径级不同样方斑块内树种都与树木密度显著的正相关关系。

    There was a significant positive correlation between tree species abundance and tree density for trees of different height classes.

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  • 通过8常绿阔叶对照种(香樟)的结构特征比较分析它们光照变化适应特性。

    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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  • 常绿树种光合速率在秋季最高,大量换叶期最低,冬季仍有一定光合量。

    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.

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  • 选取南京地区已引种成功6常绿阔叶,运用越冬适应性观察电导作为对比测试手段,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.

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  • 南京地区地处亚热带北缘,一些常绿阔叶自然分布

    Nanjing area is the northern boundary of northern subtropical zone where some evergreen broad-leaved species are distributed in.

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  • 植被基带群落物种数量系成分重要方面,常绿落叶阔叶树种所占的比例相差无几。

    Evergreen and deciduous broad-leaved tree species were almost equivalent in quantity and importance values in the basal vegetation zone.

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  • 年间落叶树种叶子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.

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  • 可以认为南京地区耐寒常绿阔叶引种分布关键地区

    It can be considered that Nanjing is the key area of introduction and distribution of cold-resistant evergreen broad-leaved species.

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  • 骨干树种常绿树种3乔木1种)、落叶乔木24种、落叶灌木14种,属于乡土树种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.

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  • 改变这种状况丰富城市色彩引进常绿树种资源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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  • 改变这种状况丰富城市色彩引进常绿树种资源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.

    youdao

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