Hardwood regeneration on the loessial hills after harvesting for uneven-aged management

摘要

In 1991, study plots were harvested to four different residual diameter distributions. Generally, for all species, the more extreme overstay removals promoted regeneration establishment while the treatment with the toast overetory removal tended to provide less regeneration than the uncut controls. For oak species, most of the seedlings present in 1993 were those occurring in 1992. Survival of oaks from 1992 to 1993 exceeded 60 percent for all species. Yellow-poplars present in 1993 were primarily seedlings established since the Inventory in 1992. Abundance in the overetory was a significant factor in predicting oak but not yellow-poplar regeneration. Diversity did not differ significantly across treatments, but diversity increased from 1992 to 1993 on the most heavily cut plots.