Plantio de espécies nativas para restauração de áreas em unidades de conservação: Um estudo de caso no sul do Brasil

Abstract

This research aims to identify potential native species for restoration of degraded areas regarding different soil preparation techniques. The experiment was developed in the Quarta Colônia State Park, RS, in randomized blocks. In planting, it was applied the model that considers fast growth and diversity species groups. The treatments: T1-hole + planting of tree species (fill group - GP and of diversity group - GD); T2-hole + tree species planting + legume (Vicia sativa); T3-subsoiling + tree species planting; and T4-subsoiling + tree species planting + legume. Observed variables, which include collect diameter, height and mortality, were submitted to analysis of variance. In relation to the 13 tree species, we submitted the same variables, plus crown diameter to the Kruskal -Wallis test. As result, subsoiling was the best method, indifferent to the use of legume. Enterolobium contortisiliquum, Schinus terebinthifolius and Inga vera are indicated to compose the fill group, while the species of the diversity group should be introduced after partial canopy coverage, considering they need more propitious environmental conditions.