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首页> 外文期刊>Revista Brasileira de Biociências = >Composi??o florística e estrutura da comunidade arbórea de um fragmento de Floresta Estacional Semidecidual em Coqueiral, MG, Brasil
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Composi??o florística e estrutura da comunidade arbórea de um fragmento de Floresta Estacional Semidecidual em Coqueiral, MG, Brasil

机译：巴西MG Coqueiral的季节性半落叶林片段的树木群落的植物组成和结构

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Studies about the floristic characterization and it’s behavior in forest fragments are necessary to better understand the ecosystem, mainly of the Atlantic Domain. This study aimed to describe the floristics and tree community structure of a fragment of a Seasonal Semideciduous Forest in the city of Coqueiral – MG, to subsidize future interventions and management strategies of the Atlantic Domain. To analyze the structure, 20 plots were installed with dimensions of 20x20 m, totaling a sample area of 0.8 ha. Were sampled individuals trees with circumference at breast height (CBH) ≥ 15.7 cm. To identify patterns of species distribution that could reflect environmental variations, was made a Detrended Correspondence Analysis (DCA). Posteriorly, was used a second matrix containing edaphic variables, to compare and correlate, a posteriori, with the distribution of the species. There was a separation of the plots into two groups: one group formed due to organic matter and pH, and the other due to P-rem and silt. In the sample area were identified 879 subjects belonging to 144 species, 98 genera and 51 families. The diversity index was 4.310 nat/individual and equability 0.867. The total density was 1098.75 ind./ha and basal area was estimated at 23.76 m2/ha, which infers that this fragment is found in a late secondary successional stage. The studied fragment shows great relevance for the conservation of biodiversity, because it presents one of the largest diversities of tree species from the Alto Rio Grande region.
机译：有关植物特征及其在森林碎片中的行为的研究对于更好地了解主要是大西洋区域的生态系统是必要的。这项研究旨在描述Coqueiral – MG市的一个季节性半落叶森林的一部分的植物区系和树木群落结构，以补贴大西洋地区的未来干预措施和管理策略。为了分析结构，安装了20个面积为20x20 m的样地，总样本面积为0.8公顷。取样的个体树木的胸围（CBH）≥15.7 cm。为了确定可以反映环境变化的物种分布模式，我们进行了去趋势对应分析（DCA）。之后，使用第二个包含人类变量的矩阵，以将后验与物种分布进行比较和关联。地块分为两组：一组是由于有机物和pH形成的，另一组是由于P-rem和淤泥形成的。在样本区域中，确定了879个对象，这些对象属于144个物种，98个属和51个科。多样性指数为4.310 nat /个人，平等指数为0.867。总密度为1098.75 ind./ha，基础面积估计为23.76 m2 / ha，这表明该碎片是在次生演替后期发现的。所研究的片段与保护生物多样性具有极大的相关性，因为它代表了上奥里奥格兰德州地区最大的树种多样性之一。

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