602 



TIMBER RESOURCES FOR AMERICAS FUTURE 



Table 67. — Mortality frorn insects in 1952, and estimated growth loss and growth impact of damage to growing stock and live 

 sawlimber during 1952, on commercial forest land in the United States and Coastal Alaska, by groups of insects and section 

 and region ' 



GROWING STOCK 





All insects 



Bark beetles 



Defoliators 



Other 2 



Section and region 



Mor- 

 tality 



Growth 

 loss 



Growth 

 Impact 



Mor- 

 tality 



Growth 

 loss 



Growth 

 impact 



Mor- 

 tality 



Growth 

 loss 



Growth 

 impact 



Mor- 



taUty 



Growth 



loss 



Growth 

 impact 



North: 

 New England _ . 



Million 



cv. ft. 



23 



8 



34 



Million 

 cu. ft. 

 43 

 59 

 136 

 92 

 3 



Million 

 cu. ft. 

 66 

 67 

 170 

 92 

 3 



Million 

 cu.ft. 

 5 

 1 



Million 

 cu. ft. 



Million 

 cu. ft. 

 5 

 1 



Million 

 cu. ft. 

 11 



i 



Million 



cu. ft. 



9 



31 



129 



8 



2 



Million 



cu. ft. 



20 



31 



130 



8 



2 



Million 



cu. ft. 



7 



7 



33 



Million 

 cu. ft. 

 34 

 28 



84 

 1 



Million 

 cu. ft. 

 41 



Middle Atlantic. ... - 



35 



Lake States 



40 



Central 









84 



Plains 















1 



















Total - - - 



65 



333 



398 



6 





6 



12 



179 



191 



47 



154 



201 









South: 

 South Atlantic 



23 

 42 



47 



95 

 97 

 59 



118 

 139 

 106 



19 

 34 

 33 



10 



19 

 39 

 43 





10 

 11 

 9 



10 

 11 

 12 



4 

 9 

 10 



85 

 81 

 40 



89 







90 



West Gulf 



3 



50 







Total--. . 



112 



251 



363 



86 



15 



101 



3 



30 



33 



23 



206 



229 







West: 

 Pacific Northwest- - 



314 

 228 

 188 

 66 



122 

 16 

 22 

 20 



436 

 244 

 210 

 86 



312 

 187 

 188 

 62 



101 

 14 



i 



413 

 201 

 188 

 63 



1 



21 



22 



1 

 41 





1 



California 



2 



43 



Northern Rocky Mountain. 





22 

 19 



22 

 22 





3 



1 





1 









Total - 



796 



180 



976 



749 



116 



865 



4 



62 



66 



43 



2 



45 



United States 



973 



27 



764 

 14 



1,737 

 41 



841 



131 



972 



19 



271 

 12 



290 

 12 



113 



27 



362 

 2 



475 





29 















-A.11 regions 



1,000 



778 



1,778 



841 



131 



972 



19 



283 



302 



140 



364 



504 







SAWTIMBER 



North: 

 New England 



Million 



bd.-ft. 



53 



24 



20 



Million 

 bd.-ft. 

 122 

 141 

 674 

 359 

 19 



Million 

 bd.-ft. 

 175 

 165 

 694 

 359 

 21 



Million 

 bd.-ft. 

 26 

 2 



Million 

 bd.-ft. 



Million 

 bd.-ft. 

 26 

 2 



Million 



bd.-ft. 



6 



1 



2 



Million 

 bd.-ft. 

 7 



61 



647 



37 



9 



Million 



bd.-ft. 



■ 13 



62 



649 



37 



9 



Million 



bd.-ft. 



21 



21 



18 



Million 



bd.-ft. 



115 



80 



27 



322 



9 



Million 

 bd.-ft. 

 136 



Middle Atlantic 





101 



Lake States 





45 



Central 









322 





2 



1 



1 



2 





1 



10 









Total-- 



99 



1,315 



1,414 



29 



1 



30 



9 



761 



770 



61 



553 



614 







South: 

 South Atlantic 



72 

 156 



184 



330 

 391 

 328 



402 

 547 

 512 



63 

 134 

 137 





63 

 159 

 213 





38 

 39 

 40 



38 

 39 



42 



9 

 22 

 45 



292 

 327 

 212 



301 





25 

 76 





349 



West Gulf 



2 



257 







Total 



412 



1,049 



1,461 



334 



101 



435 



2 



117 



119 



76 



831 



907 







West: 



1,735 



1,358 



1,041 



298 



783 

 94 



164 

 96 



2,518 



1,452 



1,205 



394 



1,724 



1,117 



1,041 



282 



657 

 79 

 31 

 19 



2,381 



1,196 



1,072 



301 



5 



125 



130 



6 

 241 



1 

 15 







256 



Northern Rocky Mountain - 

 Southern Rocky Mountain.. 





133 

 76 



133 

 91 





15 



1 



1 



2 



Total 



4,432 



1,137 



5,569 



4,164 



786 



4,950 



20 



334 



354 



248 



17 



265 







United States _ . 



4,943 

 98 



3,501 



75 



8.444 

 173 



4,527 



888 



5,415 



31 



1,212 

 62 



1,243 

 62 



385 

 98 



1,401 

 13 



1,786 





111 















All regions 



5,041 



3,576 



8,617 



4,527 



888 



5,415 



31 



1,274 



1,305 



483 



1,414 



1,897 



' Mortality estimates represent actual losses due to insects in 1952. In all 

 but the Northern Rocky Mountain Region actual mortality was found to 

 agree closely with the current level of mortality indicated by trends over 

 a long period of years, as determined in 1952. In the Northern Rocky 

 Mountain Region actual mortality of both growing stock and sawttraber in 

 1952 was found to be well above this level. 



2 Includes hardwood borers, white pine weevil, pine tip moths, turpentine 

 borer, cone and seed insects, Saratoga spittlebug, and the balsam woolly 

 aphid. 



