Forest increynent. — The gross volume oi wood produced on the growing 

 stock — usually within a year's time. 



Mortality. — The volume lost from the growing stock by the death of 

 individual trees through such natural causes as fire, tree competition, 

 old age, disease, insects, drought, and wind. 



Net increment. — Forest increment minus annual loss through mortality 



Saw-timber or board-foot increment. — The net increment on the saw- 

 timber portion of sawlog-size trees, plus the saw-timber volume in sound 

 trees reaching sawlog size. 



Net increment of the total stand. — The net increment on the sound stem- 

 wood of softwoods 5 inches d. b. h. and over, on under-sawlog-size hard- 

 woods, and on the sawlog portion of sawlog-size hardwoods, plus the 

 sound-tree volume ot all species reaching 5 inches d. b. h. during the in- 

 crement period. If expressed in cords, bark volume is included; if in 

 cubic feet, bark volume is omitted. 



Commodity drain. — The sound-tree growing-stock material utilized 

 plus the sound usable material left in felled trees. 



Board-foot drain. — Commodity drain of saw-timber material. 



Cordwood drain. — Commodity drain in terms of saw-timber material, 

 the upper stems of sawlog-size softwoods, and small trees ranging from 5 

 inches to sawlog size. 



Cubic-foot drain. — Identical with cordwood drain, except that bark 

 volumes are omitted. 



Data by Physiographic Regions 



The following tables present area, volume, increment, 

 and drain statistics for the three major physiographic and 

 economic regions of North Carolina — the Coastal Plain 

 (Forest Survey units 1 and 2), piedmont (Forest Survey 

 unit 3), and mountain (Forest Survey unit 4). They pro- 

 vide a convenient means ot appraising and comparing the 

 general forest situation in these distinct divisions of the 

 State. 



Table 35. — Land area classified according to use, by physiographic region, 1938 



Forest: ' 



Productive 



Nonproductive - 



Total forest... 



Nonforest: 



Agriculture: 



Old cropland- - 

 New cropland. 

 Pasture 



Total agriculture- 



Abandoned cropland 



Other nonforest 



Total nonforest . 

 All uses. 



Land use 



Coastal Plain 



Acres 

 9, 589, 800 

 13, 800 



9, 603, 600 



4, 401. 200 

 114. 100 

 134, 500 



4, 649. 800 



84,800 



652. 600 



5, 387, 200 



14. 990, 



Percent 



64.0 



.1 



64.1 



Piedmont 



Acres 

 4, 968. 100 

 4,100 



4, 972. 200 



31.0 



.6 



4.3 



35. < 



4, 563. 500 

 127, 900 

 289, 900 



4,981.300 

 121. 300 

 505, 000 



5, 607. 600 



100.0 



10, 579, 800 



Percent 

 47.0 

 ( J ) 



47.0 



43.1 



' 1.2 

 2.8 



47.1 

 1.1 



4.8 



53.0 



100.0 



Mountain 



Acres 

 3, 543. 800 

 53, 000 



3, 596. 800 



896, 100 



25,300 



596. 100 



1, 517, 500 

 120,700 

 158. 200 



1, 796. 400 



5, 3y3. 200 



Percent 



65.7 



1.0 



16.6 



.5 

 11. 1 



28.2 

 2.2 

 2.9 



33.3 

 100.0 



i Exclusive of 227.200 acres in Great Smoky Mountains National Park. 

 i Negligible. 



Table 36. — Distribution of productive forest area in the three physiogtaphic regions of North Carolina, by forest condition and type, 1938 



COASTAL PLAIN 



Forest type 



Old growth 



Second-growth sawlog 

 size 



Under-sawlog size 



Total 



Uncut 



Partly cut 



Uncut 



Partly cut 



Second 

 growth 



Reproduc- 

 tion 



Clear-cut 



Lohlollv pine . . .. 



Acres 

 88,900 

 800 

 98, 600 

 6.500 

 4.100 

 262, 700 



Acres 

 182, 800 

 5,800 

 57. 000 

 65, 800 

 54.600 

 433. 300 



Acres 



1, 323, 100 



33,400 



401,400 



94, 300 



44,100 



432, 800 



Acres 

 1, 265, 000 

 58,600 

 93, 700 

 45, 800 

 88, 900 

 228, 500 



^4cres 

 968, 500 

 67,600 

 760, 100 

 485. 600 

 341. 000 

 488,200 



Acres 

 139. 400 

 3,200 

 388. 300 

 118, 800 

 28,600 

 163, 900 



Acres 

 44,000 



Acres 

 4,011,700 



169, 400 

 1, 956, 900 



863, 100 



561, 300 

 2, 027, 400 



Percent 



41. S 





l.S 



Pond pine. . 



157, 800 

 46.300 



21). 4 



Longleaf pine. _ . . . 



9.0 





5.9 



Bottom-land hardwoods.. 



18,000 



21.1 









f 461. 600 



| Percent 

 [ 4.8 



799, 300 



Percent 

 8.3 



2, 329, 100 



Percent 

 24.3 



1, 780, 500 



Percent 

 18.6 



3, 111. 000 



Percent 

 32.4 



842,200 



Percent 

 8.8 



266, 100 



Percent 

 2.8 



9, 589, 800 

 Percent 





All types.. _ -_. 



100. 









7i 



