Atributos biológicos e qualidade do solo sob arranjos de espécies arbóreas e arbustivas

Abstract

The degraded areas recovery management systems directly affect the existent soil bodies community and activity. The objective is to examine the soil quality related to biological aspects (microbiological attributes and epigeic fauna) in areas under recovery, involving arboreal and shrubby species arrangements, in the county of Bonito, MS. The study was divided in areas which are being recovered under two methods: biodiverse agroforestry systems (AFSs) and Densified Seedling from arboreal species plantation (PAM) (“Anderson Islands”). And another area where it was pursued to evaluate the effects of different SAFs over the microbiological attributes. The different recovery systems were constituted by five areas, two AFSs (AFSa and AFSb) and three PAM (PAMa, PAMb and PAMc). The different AFSs area was composed by an open AFS (AFSAB), intermediate AFS (AFSINT) and densified AFS (AFSAD) and a conventional plantation area (PC), Direct Seeding (SD) and Pasture (PAST). On both areas Native Vegetation (VN) was constituted for comparative effects for the initial soil condition. The soil samples were collected in each system on a 0-10 cm depth, with five samples, composed by seven subsamples collected randomly for the soil microbial biomass carbon measurement (C-BMS), basal breathing (C-CO2), metabolic quotient (qCO2) and microbial quotient (qMIC). Only in areas under recovery were installed pitfall traps for epigeic fauna capture, five in each system. The soil management systems interfered, generally, on the soil biological parameters. The recuperation systems favor the soil´s spineless fauna biodiversity.