Impact on the Operation of a Forwarder with the Wheeled, Tracked-Wheel or Tracked Chassis on the Soil Surface

The impact of a small forwarder with the wheeled chassis, tracked-wheel and tracked chassis traveling on soil profile was studied. three types were assessed for influence loading cargo space degree tire inflation induced specific actual pressures tires surface. Penetrometric resistances rut depths in driving track measured. effect layer logging residues size determined. practice determining forest machines surface by means pressure does not have full informative value. In maximum values exceeded established numerically up to 203%. Average could be reduced 45% reducing inflation, 70% use tracks, or 49% residues. As compared type, type lower 81% depth after ten passes smaller 50%.