Impactos do sistema de uso e manejo do solo sobre a composição vegetal, dinâmica de nutrientes e entomodiversidade.

Abstract

The phytosociological study is a group of ecological assessment methods, whose objective is to provide a specific view of the distribution and composition of plant species in a plant community. Given this context, the objective was to evaluate the phytosociology in different cropping systems and forest area in areas of Brejo de Altitude. The study was developed in five land occupation systems, namely: forest (FL), agroforestry system (SAF), mandala (MA), palm monoculture (MP) and degraded area (AD). The phytosociological survey was carried out using the fixed plot method, where sampling units of 10 x10 m were used, organized in two study areas with 5 plots each in the FL and SAF areas, in the other areas such as MA, MP and AD it was The standard inventory square method was used, a square measuring 0.50 x 0.50 cm, which was randomly released once in the useful area of each plot. The most represented families in the analyzed areas are Fabaceae, Moraceae, Rubicaceae, Amaryllidaceae, Lamiaceae, Poaceae, Cactaceae. The forest area presented the highest index of shrub-tree diversity even suffering from anthropic actions, the SAF presented species with the highest hypsometric structure, the mandala area presented the second highest index of shrub-tree diversity and greater equality, the areas of monoculture palm trees and the degraded area have some similarities, such as the dominance of Brachiaria and the low level of diversity and equality.