Floristic and structural diversity of agro-forest yards in a cerrado area, North of Legal Amazonia

Abstract

The (QAs) promote sustainability for millions of people worldwide, however, research in the area and in the northern states of the country are considered deficient or scarce. Therefore, the objective was to study the floristic and phytosociology of (QAs) in an area of Cerrado in the state of Tocantins. The survey was carried out in four (QAs) in the Mariana resettlement, located between the municipalities of Palmas and Porto Nacional, Tocantins. Three plots of 20x30m were installed in each (QAs), making a total of 0.72ha of sample area, being sampled all individuals with breast height circumference 1.30 cm from the ground (CAP) ≥ 10cm. The average height of vegetation in QA1 was 4.79m and the total basal area was 120.17m² /ha, in QA2 the average height was 5.14m with a total basal area of 18.49m² / ha, in QA3 the average height was of 3.66m and total basal area of 27.42m² / ha, in QA4 the average height was 5.54m with a total basal area of 33.98m² / ha. The ten most important species in the backyards together accounted for 44.26% (IVI), with emphasis on: Malpighia glabra, Psidium guajava and Mangifera indica that reached prominent positions in more than one (QAs). The ten most important families together accounted for 67.63%of the total IVI for all QAs, with Arecaceae, Anacardiaceae and Fabaceae standing out with the largest (IVI) for all (QAs) evaluated. The awareness about these QAs may assist in their valuation, in addition to providing scientific information for the maintenance of cultural identity, in addition to contributing to the conservation of local biodiversity.