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首页> 外文期刊>Australian Journal of Crop Science >Effects of intra-specific tree competition on dendrometric parameters of Peltophorum dubium
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Effects of intra-specific tree competition on dendrometric parameters of Peltophorum dubium

机译：种内树竞争对杜鹃花光度法参数的影响

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The purpose of this research was to assess the performance of dendrometric parameters of Peltophorum dubium in several trees competition and stand age. The experiment was carried out in Brazil from 2009 to 2013. The experimental evaluations were done on variables such as cylindrical volume (CV), crown diameter (CD), diameter at beast height (DBH1.3 m), crown area (CA) and total height of tree (THT). The experiment was performed in a Nelder wheel competition, which is used in forestry research to test tree competition in a single plot. The interaction between the treatments (tree competition and stand age) was statistically significant (p≤0.01) for all variables assessed. The correlation between THT with the other dendrometric variables was strongly negative. These results might be attributed to the tree competition, where the tree competition was higher the THT was higher, as well. This increase in THT caused depletion in DBH1.3 m, CD, CA and CV. The higher THT did not guarantee higher DBH1.3 m and CV of P. dubium, because these dendrometric parameters showed strong and negative correlation during 37 months of stand age. Even with these depletions on dendrometric parameters in higher tree competition, it was possible to affirm that P. dubium is a forestry species that show a high adaptation in the variation of the tree competition ranged from 179 to 1,324 tree ha-1 until 37 months of stand age.
机译：这项研究的目的是评估在数个树木竞争和林分年龄中，Peltophorum dubium的树状参数的性能。该实验于2009年至2013年在巴西进行。实验评估的变量包括圆柱体积（CV），冠冠直径（CD），野兽高度直径（DBH1.3 m），冠冠面积（CA）和树的总高度（THT）。该实验是在Nelder车轮竞赛中进行的，该竞赛用于林业研究，以在单个样地中测试树木竞赛。对于所有评估的变量，处理之间的相互作用（树木竞争和林分年龄）具有统计学意义（p≤0.01）。 THT与其他树状变量之间的相关性极强。这些结果可能归因于树木竞争，其中树木竞争越高，THT也越高。 THT的增加导致DBH1.3 m，CD，CA和CV耗尽。较高的THT不能保证较高的DBH1.3 m和C. dubium的CV，因为这些树状参数在站立时间的37个月内显示出强烈的负相关性。即使在较高的树木竞争中树木密度参数上的这些耗竭，也有可能确认杜鹃是一种林业物种，对树木竞争的变化表现出高度适应性，范围从179到1,324树木ha-1直到37个月。站立年龄。

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