TREE COMPOSITION AND DEMOGRAPHY OF A SECOND GROWTH HARDWOOD FOREST IN BERRIEN COUNTY, MICHIGAN

摘要

The tree species composition of a small, second growth forest in Berrien County, Michigan, about one-half mile east of Lake Michigan, was determined from tree numbers and diameters gathered using the T-square method. The forest is dominated by northern red oak (Quercus rubra), east-em white pine (Pinus strobus) and red maple (Acer rubrum). When compared to upland sites, lowland sites had greater species diversity (14 compared to 11) and a greater basal area (57.84 compared to 39.16 m~(-1) - ha~(-1)),but had a lower density (317.89 compared to 357.05 trees .ha~(-1) of trees. Size class structure of the tree species generally showed that they were replacing themselves and will continue for some time into the future.