tree stand

The density of the stand for producing middle pole trees should be 3 460 tree per hectare, the spacing should be 1.7m × 1.7m. ( 2) high planting density and severe thinning regime is favorable to all kind of timber production;

中径材1.7m×1.7m，3460株/hm2。（2）采用较高的初植密度，并采用强度较大的间伐机制，对小径材和大、中径材的生产都是有利的；

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My friend, even for a tree, stand below it and look around.

我的朋友, 甚而一棵在它之下的树 、 立场和神色的.

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Reconstruction of Key Tree Factors in Shade Stand based on Stereo Vision

基于立体视觉的郁闭林分主要测树因子的重建

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Effect of Target Tree Stand Management on Natural Regeneration of Pinus tabulaeformis Plantations on Loess Plateau Area

目标树林分作业对黄土高原油松人工林天然更新的影响

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Do not stand under a tree during a thunderstorm.

在雷雨期间不要站在树下.

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This will be your tree stand.

这就是“圣诞树”的支座.

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At different thinning intensity, the tree number (%) and volume (%) of big diameter woods increased with stand age; the growth rate increased with site index and thinning intensity.

不同间伐水平中、大径材的株数（%）和材积（%），随着林龄的增加而递增；立地指数级越高，间伐强度越大，递增的速度越快。

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Under the different tree environment, the aero-anion horizontal difference is remarkable; ( 3) In the city ecology environment, the concentration of air anions and CI had no significant differences when the stand structure of arbores were different;

在城市环境下，不同林分结构类型的乔木片林对空气负离子水平以及空气质量指数（CI）的影响差异不显著；（4）天气条件对绿地的空气负离子水平存在显著影响；

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The 5-year study indicates that the optimal thinning treatment for 20~ 30-year-old natural birch stands is to maintain a stand density of 1 100 stems · hm-2 and the pruning intensity should not exceed 1/ 2 tree height.

5a的研究结果表明，林龄20～30a的白桦天然林最适林分密度为1100株·hm-2，修枝强度不应超过1/2树高。

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The vine was going to throw its life away because it could not stand erect and have as fine fruit as the peach tree.

葡萄藤则为自己无法直立，并且无法像桃树那样结出上好的果实而想结束生命

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