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首页> 外文期刊>Floresta >Diametric structure in a community of shrub-tree Caatinga, municipality of Floresta, state of Pernambuco, Brazil
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Diametric structure in a community of shrub-tree Caatinga, municipality of Floresta, state of Pernambuco, Brazil

机译：巴西伯南布哥州弗洛雷斯塔市的灌木树Caatinga社区的直径结构

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摘要

This study aimed to analyze the diametric structure of the stand and of five species of highest importance value for a Caatinga area, located in the municipality of Floresta, state of Pernambuco, Brazil. The work was developed from 40 sample units of 400 m2 each, systematically allocated. All individuals with tree circumference at the base (0.30 m) greater than or equal to 6 cm were measured. The "q" quotient of De Liocourt was used to verify discrepancies between recruitment rates and mortality. We reported that, for the studied area, the species Poincianella bracteosa(Tul.) L. P. Queiroz, Mimosa ophthalmocentra Mart. ex Benth., Aspidosperma pyrifolium Mart., Myracrodum urundeuva(Engl.) Fr. All., and Bauhinia cheilanta(Bong). Steud represented 77.25% of the total density sampled. The diametric distributions indicated that regeneration occurs continuously. Through the "q" quotient, it can be inferred that, for the study stand, Myracrodum urundeuva and Poincianella bracteosa, the individual’s mortality has been compensated by recruitment in different diameter classes. However, the diametrical structure for Mimosa ophthalmocentra, Aspidosperma pyrifolium, and Bauhinia cheilanta indicated problems of maintenance and development for these species.
机译：这项研究旨在分析位于巴西伯南布哥州弗洛雷斯塔的Caatinga地区的林分和五个最重要价值物种的直径结构。这项工作是从40个样本单元（每个400平方米）中进行系统分配的。测量了所有在基部（0.30 m）处树长大于或等于6 cm的个体。 De Liocourt的“ q”商用于验证招聘率和死亡率之间的差异。我们报告说，对于所研究的地区，物种Poincianella bracteosa（Tul。）L. P. Queiroz，含羞草眼含羞草市场。前Benth。，Aspidosperma pyrifolium Mart。，Myracrodum urundeuva（Engl。）Fr.。全部，以及紫荆花cheilanta（Bong）。螺柱占采样总密度的77.25％。直径分布表明再生是连续发生的。通过“ q”商，可以推断出，对于研究台位的Myracrodum urundeuva和Poincianella bracteosa，已通过在不同直径级别进行募集来补偿个人的死亡率。但是，含羞草含羞草，Asperdosperma pyrifolium和Bauhinia cheilanta的直径结构表明了这些物种的维持和发育问题。

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