Otimização multicritério da extração madeireira na Amazônia com o uso de escaneamento laser aerotransportado

Abstract

Several factors affect the management of natural forests, which many times are antagonistic, when dealing with the establishment and location of skid trails. The lack of detailed data about the forest structure and topography make the decision making process precarious. The use of airborne laser scanning may improve the capacity to obtain adequate information about remote areas with dense vegetation. This study suggests using the multi criteria optimization methods to determine the optimal harvesting path subject to four different cost scenarios. The optimization process with equal weights resulted in a total travelled distance equals to 26.95 kilometers with the permanent preservation area crossed 30 times. The minimization of impacts scenario resulted on a total travelled distance equals to 26.15 km with the preserved area traversed across 42 times, and the overall ramp slope minimization resulted in a total travelled distance of 30.92 km with 52 crossings of the preserved area. Finally, the minimization of crossings in the permanently preserved area resulted on a total travelled distance equals to 26.15 km with 17 interceptions. The objective of exploring a set of logging strategies with multi-criteria optimization methods was reached. Based on the results, the best scenarios were minimization of preserved areas crossing and equal weights.