Caracterização e análise socioeconômica da vegetação de caatinga em projetos de assentamento no Cariri Ocidental Paraibano.

Abstract

Starting from a base of secondary data, this study aimed to assess the floristic, understand the structures of local vegetation and to characterize the forest resources (for firewood), in areas of Caatinga forest management aimed at evaluating its contribution to sustainability in three agrarian reform projects located in Western Cariri Paraiba, in the counties of Monteiro (I), Ouro Velho (II) and São Sebastião do Umbuzeiro (III). Were made floristic and phytosociological analysis, diversity, similarity, and hypsometric diameter distributions were also done a study on the socioeconomic improvement. The most representative families in the three areas were: Fabaceae (36.6%), Euphorbiaceae (22.1%) and Mimosaceae (20.5%). The basal areas were 11.31 m2.ha-1, 12.78 m2.ha-1 and 12.97 m2.ha-1 for the settlement projects (I, II and III) respectively. The Poincianella pyramidalis was the species with the highest index value in three important areas. The diversity index of area (III) was 2.6 nats / ind. The average height in the three study areas was less than 4 meters. The management plans are economically viable, as had a positive net present value.