The present work makes an attempt to recognize the kind of logrolling means used while logging on the basis of range of disturbances of the top soil layer. The investigation covered horse skidding and skidding made with the MultiFKS hoisting winch. Graphical analysis of the diagrams representing disturbances characteristics of the top soil layer (surface and volume) allows one to perform correct recognition of the causative factor responsible for 18% of the damages. Application of artificial neuron networks allowed us to correct typing-out logging environment for 75-96.8% disturbances of the top soil layer.