FLORISTIC-STRUCTURAL CHARACTERIZATION OF DEGRADED FOREST IN THE ARC OF DEFORESTATION, BRAZILIAN AMAZON

Q4 Environmental Science

Floresta Pub Date : 2024-01-02 DOI:10.5380/rf.v54i1.83565

Juliana Tramontina, T. Kuplich

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Abstract

Floristic-structural characterization of degraded forest in the arc of deforestation, Brazilian Amazon. The purpose of this study was to characterize the floristic-structural aspects and the distribution of aboveground biomass (AGB) of degraded forests located in the arc of deforestation, southern Brazilian Amazon. In addition to characterizing the forest as a whole, analyses at the level of sampling units were established. Forest inventory data provided support to biomass estimates, as well as floristic-structural analysis. A survey was carried out, collecting from plots of 2,500 m² (50 x 50m) diameter at breast height (DBH >10cm) and total height (HT) of the trees. The forest showed a high concentration of species distributed in a few botanical families and a high number of locally rare species. The sampling units showed floristic similarity, identifiable by cluster analysis. On the other hand, they showed significant structural differences based on the DBH and HT variables. The AGB estimate for the area was 215.20 Mg ha-1 (± 83.73 Mg ha-1). Those results contribute to better understanding the changes in forest formations related to forest degradation in the southern Brazilian Amazon, as well as to the definition of conservation and restoration strategies for degraded forests.

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巴西亚马逊森林砍伐弧区退化森林的植物学结构特征分析

巴西亚马逊森林砍伐弧区退化森林的植物结构特征。本研究的目的是描述位于巴西亚马逊南部森林砍伐弧区的退化森林的花卉结构特征和地上生物量（AGB）分布情况。除了分析森林整体特征外，还建立了取样单位层面的分析。森林资源清查数据为生物量估算和植物结构分析提供了支持。在面积为 2,500 平方米（50 x 50 米）的地块上进行了调查，收集了树木的胸径（DBH >10厘米）和总高度（HT）。森林中的物种高度集中，分布在几个植物科中，并有大量当地稀有物种。通过聚类分析，取样单位显示出植物学上的相似性。另一方面，根据 DBH 和 HT 变量，取样单位在结构上存在显著差异。该地区的 AGB 估计值为 215.20 兆克/公顷（± 83.73 兆克/公顷）。这些结果有助于更好地了解与巴西亚马逊南部森林退化有关的森林形态变化，以及确定退化森林的保护和恢复战略。

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来源期刊

Floresta Environmental Science-Nature and Landscape Conservation

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Revista Floresta admits articles of scientific contribution in Forest Science, in the areas of Nature Conservation, Economy and Forest Policy, Forest Management, Silviculture and Wood Technology. The main task is to promote and divulgate the development of Forest Science in Brazil and in the world. Articles published in Revista Floresta are under total responsibility of the authors, who are aware that they are original studies. It remains implicit that articles were not submitted for publication to any other divulgation media. It remains explicit the agreement of authors to norms of the journal and, along the development of their work, the observance of ethic aspects and respect of the current copyright legislation.