Eficiência do inventário florestal e estrutura diamétrica de eucalipto cultivado em sistema de integração lavoura-pecuária-floresta

• Autor(a) principal: Silva, Andrey Gregory Da Mota Ferreira e
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Biblioteca Digital de Monografias da UFMT
• Texto Completo: http://bdm.ufmt.br/handle/1/2194
• topic: CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL; Inventário florestal; População florestal; Eucalyptus urograndis; Eucalipto - Estrutura diamétrica; Forest inventory; Forest population; Eucalyptus urograndis; Eucalyptus - diametric Structure

The present text is intended to define the most efficient sampling unit size to perform the forest inventory in a Eucalyptus urograndis forest, grown in crop-livestock-forestry system (ILPF) with two different arrangements, and the best representation of diametric structure. For this, was necessary select the best mathematical equation to estimate total volume with bark of trees. The ILPF is located in the experimental field of Embrapa agrosilvopastoral, in the city of Sinop. Were evaluated sample units with 48, 96 and 192 m² in the double lines arrangements, and sample units with 54, 108 and 216 m² in the triple lines arrangements in ILPF. There was necessary to collect information about the time of forest sampling, separating it in allocation of the sample units, measurement of trees and movement between sample units for subsequent determination of the relative efficiency through total time spent on sampling. Nine mathematical equations were adjusted by volume measurement of 21 tree, and was later selected the one with best statistical parameters, considering the significance of the coefficients, waste analysis, R²aj and standard error of the estimate. The representativeness of diameter distribution was determined by chi-square method, comparing the results of forestry sampling made in the present study with forestry sampling made by continuous plots monitoring. The equation propose by Schumacher-Hall was considered the best to determine tree volume with bark. The plot size with 192 and 216 m², in ILPF with double lines arrangements configuration and with triple lines arrangements, respectively, were considered more efficient. The chi-square method showed no significant difference in the representation of the diametric structure of the forest population, however, all tested sample units sizes have satisfactory representation of the diametric structure of Eucalyptus urograndis grown in ILPF.