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首页> 外文期刊>Biota Neotropica >Structure and floristic relationships between Cerrado sensu stricto sites on two types of substrate in northern Cerrado, Brazil
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Structure and floristic relationships between Cerrado sensu stricto sites on two types of substrate in northern Cerrado, Brazil

机译：巴西北部塞拉多北部两种类型基质上的塞拉多森苏严格站点之间的结构和区系关系

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摘要

We described and compared the floristic composition, richness, species diversity and structure of the tree-shrub component in pairs of Typical Cerrado (Cerrado Típico) and rocky outcrop Cerrado (Cerrado Rupestre) in two localities in Tocantins State. In each locality, we set up 10 plots of 20 × 50 m at a site, the Cerrado Típico and other Cerrado Rupestre, and sampled the individuals with Db30cm ≥ 5 cm. The rocky outcrop Cerrado did not present any trend towards lower richness and basal area compared to the Cerrado on deep soil. Few species occurred across the four sites and only two important species (Anacardium occidentale and Qualea parviflora) in the four vegetation structure were common to both environments assessed. Furthermore, the occurrence of habitat-specialist species of rocky outcrops and high altitudes (Mimosa claussenii, Tibouchina papyrus, Schwartzia adamantium and Wunderlichia cruelsiana) and the high dissimilarity among sites suggest that altitude is the main responsible for the floristic dissimilarity, followed by the influence of substrate type. Therefore, the information with respect to phytophysiognomy type as a parameter to select areas for conservation, by itself, does not effectively ensure biodiversity preservation, owing to the existing flora heterogeneity not only at local but also at regional scale, revealed by the floristic and structural particularity of each site.
机译：我们描述并比较了Tocantins州两个地方的典型Cerrado（CerradoTípico）和岩石露头Cerrado（Cerrado Rupestre）对中的灌木组成的植物区系组成，丰富性，物种多样性和结构。在每个地方，我们在CerradoTípico和其他Cerrado Rupestre站点上建立了10个20×50 m的样地，并采样了Db30cm≥5 cm的个体。与深层土壤中的塞拉多相比，岩石露头塞拉多没有呈现出任何更低的丰富度和基础面积的趋势。在这四个地点几乎没有发生任何物种，并且在这两个评估环境中，四个植被结构中只有两个重要物种（西洋参（Anacardium occidentale）和小叶Qualia parviflora）是共有的。此外，岩石露头和高海拔地区（栖息地含羞草，Tibouchina纸莎草，Schwartzia adamantium和Wunderlichia cruelsiana）的栖息地专长物种的发生和地点之间的高度差异表明海拔高度是造成植物区系差异的主要原因，其次是影响基材类型。因此，有关植物地理学类型的信息作为选择保护区域的参数，本身并不能有效地确保生物多样性的保护，这是由于不仅在当地而且在区域范围内，现有的植物异质性都由植物和结构揭示出来。每个站点的特殊性。

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