The present research work, entitled "Evaluation of the soil quality in a reforested forest with eucalyptus in the Pacán - Huánuco 2017 area", had as its general objective: To evaluate the soil quality in a forest reforested with eucalyptus and as specific objectives : Determine the nutrients that the forest contributes reforested with eucalyptus to the soil; Determine the physical characteristics of reforested soils with eucalyptus and Describe the physico - chemical differences between the reforested forest floor in the Pacán area with a non - reforested soil. For the present study, a plantation of Eucalyptus globulus was selected, where 15 sub-samples of reforested soil with eucalyptus Eucalyptus globulus and 15 sub-samples were extracted in nonreforested soil, according to the methodology for sampling. According to the results obtained from the laboratory of the Agrarian University...