Zasada, Z.A.Alm, A.A.2012-12-172012-12-171970https://hdl.handle.net/11299/14108818 pagesThree 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.en-USReport