Storage yard allocation with different skid trails distances in Amazon Forest concession area

Abstract

The allocation of storage yards is an important part of the infrastructure as it relates to the opening of forest roads and skid trails. This research aimed to propose an optimization model for the allocation of storage yards with volume restrictions and classes of skid trail distances. The study area is located in the Paru State Forest, Monte Alegre-PA, Forest Management Unit IX, Annual Production Unit 03, Work Unit 7 and 8, 168.67 ha area, 459 trees and 3,994.4 m³ estimated wood volume. The mathematical model aims to reduce the connection distance between trees and storage yards by restrictions maximum volume of wood and two skid trails distances. Were processed 27 scenarios in CPLEX Studio 20.1.0. Four best scenarios were compared to the planning executed out by the company, and the best scenario was chosen using the AHP method. The optimized scenarios reduced 18% in the total exploitation infrastructure cost average and there was greater homogeneity in the storage yards volume distribution. Scenario 2 performed better. Lastly, the application of the optimization model in natural forests is feasible and allows optimizing processing time and infrastructure planning.