INFLUÊNCIA DE FATORES QUÍMICOS DO SOLO SOBRE O DESENVOLVIMENTO DAS ESPÉCIES FLORESTAIS MAIS IMPORTANTES DO CERRADO DA RESERVA BIOLÓGICA DE MOJI-GUAÇU, SP
DOI:
https://doi.org/10.24278/2178-5031.199241346Keywords:
Savanna, edaphologyAbstract
lt was studied the influence of the soil chemical properties on formation of the savanna vegetation and its effects on the development of lhe most important native species. Along a transect line located in order to cover the physionomic aspectof the existing vegetation soil samples were collected on plots (1 O m x 20 m) where the species had been identified in the phytosociologycal survey. The soil samples were analysed for the following chemical properties: soluble phosphorus, organic matter, pH, exchangeable potassium, calcium and magnesium, soluble,boron,zinc manganese, bases content, cation exchange capacity, bases saturation and exchangeable aluminium. The vegetation development was measured throught mean height, mean diameter, basal area, cylindric volume and number of trees per hectare. The data obtained from the vegetation measurements and there from the soil properties were analysed for linearcorrelation. The soil chemical properties that most influenced on lhe vegetation development were: potassium, phosphorus, bases content, boron and zinc. The native species most influenced by the soil chemical factors were: Qualea grandiffora, Byrsonima verbascifolia, Vochysia tucanorum, Macha erium villosum, Kiel m e yera va riabilis, Anadenanthera falcata andAspidosperma tomentosum. The biometric variables that more correlated itself with the soil chemical properties were: mean height ant mean diameter.
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