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Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest

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Abstract

The objective of this study was to analyze the forest composition and phytosociological structure of two Annual Production Units (UPAs) under forest concession in the Amazon. Data from 100% forest inventories of the UPAs located in the State Forest of Paru, Par´ a, Brazil, were used. The analyses included: representativeness of the effective harvesting area (AEE) in relation to the gross UPA area; Jaccard similarity index; horizontal structure, filtering the 10 species with the highest Importance Value Index (IVI); volume of commercial species common to both UPAs; and stem quality. AEE of UPA 3 was 92.25% (3,449.26 ha), and 84.10% (2,192.77 ha) in UPA 4; there was 64% floristic similarity between the two UPAs; among the 10 species with the highest IVI were Handroanthus serratifolius and Manilkara huberi, both highly relevant commercially; the species with the greatest volume in UPA 3 was Handroanthus impetiginosus, and in UPA 4 it was Bagassa guianensis; and commercial species with stem quality suitable for full or partial log utilization were found in greater abundance. It was concluded that the UPAs shows high floristic similarity (64%) and that there are species with potential for both timber and non-timber products not yet being exploited.

Article details

Keywords
Sustainable Forest ManagementForest InventoryTropical RainforestAmazon Rainforest
DOI
doi.org/10.55746/treed.2026.03.275
Volume
16
Number
e024275
Received
2024-12-10
Accepted
2026-03-27
Published
2026-03-30

Figures

Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest – Figure 1
Figure 1
Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest – Figure 2
Figure 2
Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest – Figure 3
Figure 3
Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest – Figure 4
Figure 4
Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest – Figure 5
Figure 5

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