Browsing by Author "Zasada, Z.A."
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Item Application of 70mm Aerial Photography to Mechanized Timber Harvest Disturbance Assessment(St. Paul, Minn. : School of Forestry, University of Minnesota, 1973-10-15) Johnson, G.; Ulliman, J.; Zasada, Z.A.; Meyer, M.Item Effect of Mechanized Tree Harvesting on Jack Pine Regeneration Requirements(Minnesota Agricultural Experiment Station, 1970) Zasada, Z.A.; Alm, A.A.Three mechanized tree harvesting systems are being used to harvest jack pine timber crops in northern Minnesota. A study of the effect of these systems on factors influencing jack pine regeneration was made in the summer of 1969 at the University of Minnesota Forest Research Center at Cloquet. This report describes the residual site conditions existing after the final harvest of a mature jack pine stand by each harvesting method and evaluates them according to conditions required for securing pine reproduction. It is one of a series of studies to be made on the effect of mechanized harvesting on environmental factors that influence regenerating a new forest.Item Full-Tree Harvesting System Aids Forest Management(St. Paul, Minn. : School of Forestry, University of Minnesota, 1969-07-15) Zasada, Z.A.; Tappeiner, J.C.Item Growth and Mortality in an Old-Age Jack Pine Stand(St. Paul, Minn. : School of Forestry, University of Minnesota, 1977-01) Jensen, Raymond A.; Zasada, Z.A.Item Mechanized Harvesting for Thinning Sawtimber Red Pine(Minnesota Agricultural Experiment Station, 1970) Zasada, Z.A.; Benzie, John W.Item Soil Disturbance from Rubber-Tire Skidders During Summer Harvesting of Aspen(St. Paul, Minn. : School of Forestry, University of Minnesota, 1969-07-15) Zasada, Z.A.; Tappeiner, J.C.