Avaliação da arborização urbana no bairro São Jorge no município de Itacoatiara, Amazonas

Abstract

The forest inventory for understanding urban afforestation is of fundamental importance for city planning with regard to the management and execution of plantations in public areas. The objective of the present work was to evaluate the quali-quantitative aspects of the afforestation of the São Jorge neighborhood in the city of Itacoatiara - AM. An inventory was carried out of all tree species identified in public areas of the neighborhood through forms to fill in qualitative and quantitative data of individuals, where they were evaluated as to their origin, horizontal structure parameters, Species Performance Index (SPI) and Index Value of Importance (IVI), diameter classes, individual height, plant health, stem quality, interference in the electrical network, root system quality, crown quality, traffic interference, pruning quality, paved area and pavement conditions . 75 individuals of 11 species belonging to 9 botanical families were registered, where only 12% are native species. The species with the highest relative and absolute density were Moquilea tomentosa and Azadirachta indica, the highest dominance were Moquilea tomentosa and Mangifera indica, the species with the highest frequency were Ficus benjamina and Inga edulis, In IVI Moquilea tomentosa and Ficus benjamina were the species with the highest index , in the SPI the species that had the greatest prominence was Moquilea tomentosa followed by Azadirachta indica where they obtained the value of 0.38 and 0.14 respectively. The average DBH found was 24.48 cm, and the average height, 5.2 m, which shows that the afforestation of the neighborhood is young with well-established individuals. 69% of the individuals had medium vigor in plant health, 87% had a branched stem, 47% had an electrical network above the canopy, 64% had an underground root system, 57% had the canopy of immune individuals, 59% had interference with pedestrian traffic, 47% with no pruning, 58% had a paved growth area and 72% had damage to the missing pavement. With the results of this study, it was possible to observe the need for public policies to strengthen afforestation in the neighborhood, which translates into significant gains for society, as well as the reduction of anthropic impacts.