Table Q.—Net volume of growing-stock trees on commercial forest land in Maryland, by 



species and tree-size class, 1976^ 







Growing stock 





OCl W 111 llUCl 



Sampling 

 error b 



1 UlClllllUCl 



Sawtimber 



All 

 trees 



m r\1 1 n o 













iVHHHJft 









\/1 illif^n /^iihi/^ foot 

 jyi lllliJrl LUUlL ycC( 





Percent 



board feet d 



Percent 



White-red pine 



33.0 



Q 1 



7. 1 



AT) 1 

 ^Z. 1 



c 



29 A 



c 



Loblolly pine ^ 



104.2 



J 1 o. 1 





7 



1,238.9 



8 



Virginia pine 



117.2 



1 1 Q A 



117.0 



ZjO. o 



12 



378.1 



14 



Other yellow pines 



1.6 





1 1 Q 



I J .7 



39 



42.3 



42 



Other softwoods 



6.8 



in ^ 





31 



38.0 



37 







530.2 



793.0 



o 



1 77fi A 



7 



Soft maples 



138.0 



142.6 



280.6 



8 



515.3 



1 1 



Hard maple 



16.9 



16.6 



33.5 



31 



50.5 



42 



Hickory 



41.8 



73.0 



114.8 



1 1 



253.4 



14 



Beech 



19.1 



76.1 



95.2 



16 



287.8 



19 



Sweetgum 



95.4 



125.7 



221.1 



9 



454.8 



12 



Yellow-poplar 



62.8 



287.7 



350.5 



10 



1,070.0 



11 



Blackgum 



40.8 



58.0 



98.8 



10 



213.2 



14 



/AoIlWcllllUlCllCl 1 y 



JJ.O 



Dl .O 



117 7 

 1 1 / .Z 



1 4 



7 1 1 n 



Z 1 1 .U 



i 



Select white oaks 



123.7 



275.8 



399.5 



7 



1,005.4 



8 



Select red oaks 



42.7 



143.3 



186.0 



12 



481.0 



14 



Other white oaks 



69.4 



110.8 



180.2 



13 



381.5 



16 



Other red oaks 



134.2 



333.9 



468.1 



7 



1,216.0 



9 



Black locust 



17.5 



15.3 



32.8 



25 



49.8 



40 



Other hardwoods 



50.4 



70.4 



120.8 



13 



250.5 



17 



Total hardwoods 

 All species 



908.3 



1,790.8 



2,699.1 



3 



6,440.2 



4 



1,171.1 



2,321.0 



3,492.1 



2 



8,166.6 



3 



a Growing-Stock trees are trees that satisfy national specifications for form and allowable cull. Poletimber trees are 5.0 to 8.9 

 inches dbh for softwoods and 5.0 to 10.9 inches dbh for hardwoods. Sawtimber trees are 9.0 inches dbh and larger for softwoods 

 and 1 1 .0 inches dbh and larger for hardwoods. 



b Sampling errors apply to the species totals for both growing-stock and sawtimber volumes. 

 Sampling error of 50 to 99 percent. 



<^ International '/4-inch rule. 



« Includes 9.5 million cubic feet and 20.4 million board feet of pond pine and 3.0 million cubic feet and 6.8 million board feet of 

 shortleaf pine. 



Table 9.— Annual net growth and removals of growing stock and sawtimber on commercial 

 forest land in Maryland, by softwoods and hardwoods, 1975 ^ 



Species group 



Growing stock 



Sawtimber 







Net growth 



Removals 



Net growth 



Removals 





Thousand cubic feet 



Thousand board feet b 



Softwoods 



24,900 



23,600 



75,000 



68,000 



Hardwoods 



86,100 



61,800 



223,000 



153,000 



Total 



1 1 1 ,000 



85,400 



298,000 



221,000 



Sampling error 





— Percent 















of totals 



31 



18 



42 



20 



a Based on trends of growth and removals for the period between inventories as estimated from remeasured plots. 



b International '/^-inch rule. v 



* U.S. GOVERNMENT PRINTING OFFICE: 1978- 703-112:14 



MANUSCRIPT RECEIVED FOR PUBLICATION 31 JANUARY 1978 



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