Sistemas agroflorestais familiares no sudeste paraense: espécies madeireiras na reabilitação de pastagens degradadas

Abstract

The use of agroforestry systems (AFS) has been indicated as an alternative for the rehabilitation of degraded pastures, especially with the use of tree species of economic value to rebuild and / or rehabilitate areas of legal reserve and permanent preservation. The objective of this study was to evaluate the development of timber species in AFS which has been used to rehabilitate degraded pastures, especially with the use of species of economic value. In this context it was implemented in a participatory manner three test-share-family production units in the rural settlement Belo Horizonte I located in São Domingos do Araguaia-PA. The research characterized the management of AFS and evaluated silviculturalmente species: burdão old (Samanea saman), chestnut (Bertholletia excelsa), copaiba (Copaifera sp.), Yellow ipe (Tabebuia serratifolia), white ipe (T. roseo-alba), purple ipe (T. cf. impetiginosa), oiti (Moquilea tomentosa), paricá (Schizolobium parahyba var. amazonicum), cow's paw (Bauhinia longifolia), sapucaia (Lecythis pisonis), sombrero (Clitorea racemosa), teak (Tectona grandis) and mahogany (Swietenia macrophylla). For the evaluation of timber species were disregarded the species that were in the outer rows to prevent the surround effect. For the analysis of the linear regression type information collected was used to estimate growth patterns evaluated in relation to the age of planting and F test at 5%. For statistical analysis we used the Microsoft Excell software. The results showed that the development of species in relation to height, diameter at breast height and crown diameter were considered adequate under the conditions studied. Thus, the use of AFS in familiar rural settlements in the recovery areas even degraded to low-input for its implementation can be successful as long as the treatment of species occurs appropriately, enabling a diverse, with economic potential system for the family.