ual stand, past logging having removed preferred 

 species such as white oak, black walnut, white ash, 

 and yellow-poplar. 



The oak-gum-cypress type, comprising 3 percent or 

 138,000 acres of the forest area, is made up of pin oak 

 flats on poorly drained uplands, and bottom-land 

 stands chiefly along the flood plains of the Wabash and 

 Ohio Rivers. The bottom-land stands contain tupelo, 

 blackgum, sweetgum, some baldcypress, various spe- 

 cies of red and white oak, hickories, and many less 

 important species. 



The other three types recognized are white-red-jack 

 pine, loblolly-shortleaf pine, and aspen-birch. Except 

 for some native Virginia pine and scattered white and 

 jack pine, the pine is in plantations, the largest of 

 which are in southern Indiana. In this State the pine 

 types will increase in importance because so much 

 pine is being planted each year, and also because some 

 old fields in the southern part are restocking to 

 Virginia pine. 



Area by Stand-Size Classes 



The size of timber and its \-oluine per acre usually 

 reflect the commercial importance of a stand. 



More than half of the 4 million acres of forest land is 

 in sawtimber stands. Two-thirds of this sawtimber 

 area supports large sawtimber, i. e., stands with at 

 least half of the board-foot volume in trees 1 5 inches 

 diameter breast high or larger. The percentage of 

 area classed as sawtimber is as great or greater than 

 that found in neighboring States. 



Poletimber stands occupy 1,337,000 acres or 33 per- 

 cent of the forest area. Seedling and sapling stands 

 occur on 600,000 acres or 15 percent. Only 61,000 

 acres or 1 percent of the area is nonstocked. 



Although the forests of northern Indiana are more 

 scattered and are in smaller tracts than in the south, '. 

 they contain a greater percentage of large timber (fig. 

 12). Sixty-six percent of the northern forest area is 

 sawtimber as compared with about 45 percent in the 



Figure 1 1 . — Sugar maple may be found in yicarly pure stands in northeastern Indiana where it is often tapped for sap. {Courtesy of Indiana 



ment of Conservation.) 



10 



Depart j 



Forest Resource Report No. 10, U. S. Department of Agricultuu 



J 



