Table 12. Net volume of growing-stock trees on timberland by species group and diameter class (cubic feet) 
 Total Current diameter   1.0-2.9   3.0-4.9   5.0-6.9   7.0-8.9   9.0-10.9   11.0-12.9   13.0-14.9   15.0-16.9   17.0-18.9   19.0-20.9   21.0-28.9   29.0+ 
 Longleaf and slash pine                       715,642                         -                           -                           -                   242,233                 473,409                         -                           -                           -                           -                           -                           -                           -  
 Loblolly and shortleaf pine              4,389,388,947                         -                           -             431,614,796           921,114,631           942,722,920           756,714,039           465,980,906           365,248,756           223,864,334           107,191,483           169,795,394              5,141,690
 Other yellow pines              1,545,398,406                         -                           -             164,682,072           304,948,341           372,470,520           321,792,723           214,941,308           106,473,653            39,895,817            13,503,261              6,690,711                         -  
 Eastern white and red pine                 724,944,846                         -                           -              50,414,980            72,337,347            77,837,637            87,654,790            91,118,773            72,522,750            74,167,374            47,639,159           136,745,878            14,506,159
 Spruce and balsam fir                   42,413,394                         -                           -                   523,303              3,759,783              2,334,019              6,880,305              4,919,629              8,187,261              5,535,850              5,335,485              4,937,759                         -  
 Eastern hemlock                 174,571,371                         -                           -              12,324,822            19,200,630            17,413,838            23,419,981            22,745,848            17,870,751            14,220,456            11,626,343            30,842,133              4,906,571
 Cypress                   35,238,331                         -                           -                     99,984                 566,104              1,022,710              1,269,679              2,506,606              3,631,664              6,193,990            12,925,625              7,021,969                         -  
 Other eastern softwoods                 133,870,100                         -                           -              32,068,466            35,564,391            29,947,626            17,275,534            10,954,749              3,308,530              1,381,322              3,369,482                         -                           -  
 Select white oaks              2,797,708,647                         -                           -              90,915,142           192,576,457           264,320,948           373,236,934           386,987,160           443,777,988           372,372,489           242,316,232           364,394,219            66,811,078
 Select red oaks              1,402,278,136                         -                           -              28,933,142            55,350,299           101,199,561           105,393,764           142,578,267           193,301,298           147,069,615           126,920,310           373,856,381           127,675,500
 Other white oaks              2,150,324,080                         -                           -              72,305,627           170,408,897           272,136,316           299,058,887           365,540,098           272,365,147           263,694,207           161,800,310           253,727,336            19,287,257
 Other red oaks              2,552,764,994                         -                           -              92,180,483           166,913,601           270,040,823           319,152,872           361,244,128           338,704,742           299,052,641           229,665,251           412,759,587            63,050,866
 Hickory              1,354,146,395                         -                           -              77,803,097           137,319,434           189,309,372           214,704,747           222,856,931           185,853,407           126,800,659            73,553,151           119,442,288              6,503,310
 Yellow birch                   20,117,403                         -                           -                1,660,407              2,206,338              3,513,361              2,105,001              2,644,803              2,052,656                         -                1,600,909              4,333,928                         -  
 Hard maple                 260,152,299                         -                           -              21,862,565            34,719,842            33,444,570            33,406,981            36,038,515            36,724,689            19,530,990            11,904,720            27,959,003              4,560,424
 Soft maple              1,197,614,610                         -                           -             133,105,466           179,670,575           178,194,032           188,024,480           145,295,207           130,590,521            91,720,882            28,340,488           111,854,873            10,818,088
 Beech                 390,882,062                         -                           -              25,306,417            32,438,595            44,719,265            41,511,861            50,818,272            44,984,588            46,972,515            33,154,923            64,082,176              6,893,451
 Sweetgum                 986,519,474                         -                           -              82,873,535           124,914,164           140,519,741           155,061,269           148,558,329           125,957,860            86,671,471            40,943,776            81,019,329                         -  
 Tupelo and blackgum                 395,079,319                         -                           -              38,236,449            47,144,205            61,581,781            54,632,622            57,775,300            43,074,960            33,341,428            26,625,118            32,667,455                         -  
 Ash                 374,911,219                         -                           -              21,607,991            36,754,189            43,570,901            60,103,041            56,974,257            47,655,251            47,898,955            25,189,022            29,337,168              5,820,444
 Cottonwood and aspen                   23,913,035                         -                           -                3,228,602              4,988,869              2,242,413              2,615,980              1,612,686              3,703,234              5,521,252                         -                           -                           -  
 Basswood                 157,499,330                         -                           -                5,868,130            10,373,499              9,246,050            15,007,827            25,033,433            25,139,625            23,089,178            26,996,142            16,745,446                         -  
 Yellow-poplar              4,643,025,945                         -                           -             174,211,391           267,481,190           383,700,958           499,659,529           640,219,122           654,855,852           591,213,220           496,040,075           780,973,827           154,670,782
 Black walnut                   81,302,854                         -                           -                4,017,324              4,929,274              8,171,904            17,356,896            11,043,158            18,958,377              8,015,099              5,659,362              3,151,461                         -  
 Other eastern soft hardwoods                 655,298,343                         -                           -              45,734,282            69,800,367            91,094,766            87,010,372            84,377,167            73,989,335            68,722,933            32,923,219            64,865,178            36,780,724
 Other eastern hard hardwoods                 307,107,595                         -                           -              43,144,960            57,309,538            57,330,542            65,703,314            43,362,033            18,220,400            10,810,369              4,197,929              7,028,508                         -  
 Eastern noncommercial hardwoods                   84,060,033                         -                           -              18,187,992            23,175,104            17,162,232              8,880,922              6,437,126              8,441,000              1,775,657                         -                           -                           -  
 Total Species group       26,881,246,808                         -                           -    1,672,911,424  2,976,207,895  3,615,722,214  3,757,634,349  3,602,563,811  3,245,594,294  2,609,532,702  1,769,421,772  3,104,232,004      527,426,345