Table 2.17 - Annual average and total accumulation of carbon in live trees on timberland in the Pacific Coast, by forest type and productivity class, 1987
Net annual growth of
growing stock
Net annual growth of
solid wood
Forest type and
productivity class
Area of timberland Softwood Hardwood Softwood Hardwood Average carbon accumulation
in trees
Total carbon accumulation
in trees
(1,000 ac) (1,000,000 cu ft) (1,000,000 cu ft) (Lbs/ac) (1,000 metric tons)
Douglas-fir
85+ 13,723 1,406,206 109,585 2,192,913 200,239 2,584 16,084
50 to 85 3,632 191,455 11,460 298,985 21,596 1,313 2,162
20 to 50 1,938 100,524 1,949 157,216 3,580 1,246 1,096
Total 19,294 1,698,185 122,994 2,649,115 225,415 2,210 19,342
Ponderosa pine
85+ 2,548 171,859 13,406 270,226 26,053 1,530 1,768
50 to 85 4,081 130,327 6,852 204,007 13,307 703 1,301
20 to 50 4,340 120,434 2,499 188,277 4,804 590 1,161
Total 10,968 422,619 22,757 662,508 44,164 850 4,230
Western white pine
85 + 12 622 0 970 0 963 5
50 to 85 0 0 0 0 0 0 0
20 to 50 2 8 0 13 0 68 0
Total 14 631 0 984 0 844 5
Fir-spruce
85 + 3,827 228,324 275 358,691 515 1,047 1,817
50 to 85 5,230 229,853 592 360,079 1,113 770 1,827
20 to 50 6,791 122,460 17,298 196,818 56,828 422 1,299
Total 15,850 580,636 18,166 915,586 58,457 687 4,943
Hemlock-Sitka spruce
85 + 6,800 567,297 21,985 894,382 40,977 1,902 5,868
50 to 85 1,528 19,816 1,591 31,237 3,278 312 216
20 to 50 1,168 42,325 160 66,711 321 795 421
Total 9,497 629,383 23,736 992,240 44,576 1,510 6,504
Larch
85 + 523 45,555 1,940 71,223 3,495 2,300 546
50 to 85 284 15,834 95 24,705 169 1,420 183
20 to 50 45 1,500 0 2,330 0 838 17
Total 852 62,889 2,035 98,258 3,665 1,929 746
Lodgepole pine
85 + 157 11,892 345 18,640 614 1,648 117
50 to 85 534 24,877 27 38,935 48 985 239
20 to 50 1,488 37,962 2 59,164 4 537 362
Total 2,179 74,733 373 116,742 664 727 718
Redwood
85 + 1,064 144,332 23,487 227,113 45,821 3,610 1,742
50 to 85 37 1,096 627 1,725 1,224 1,209 20
20 to 50 0 0 0 0 0 0 0
Total 1,102 145,428 24,114 228,837 47,045 3,526 1,763
Other softwood types
85 + 176 3,021 864 4,715 1,566 468 37
50 to 85 104 937 289 1,474 539 253 12
20 to 50 211 475 998 764 3,279 233 22
Total 491 4,433 2,152 6,954 5,386 322 72
Western hardwood types
85 + 5,329 204,215 344,663 319,244 634,046 2,224 5,376
50 to 85 978 15,536 35,747 24,365 74,011 1,236 548
20 to 50 4,738 15,923 82,434 25,667 251,025 702 1,510
Total 11,046 235,673 462,840 369,275 959,073 1,484 7,433
Non-stocked timberland
85 + 508 4,241 2,891 6,591 5,287 299 69
50 to 85 143 506 0 789 0 75 5
20 to 50 164 833 4 1,305 7 108 8
Total 815 5,143 2,895 8,000 5,294 210 78
All timberland
85 + 34,667 2,787,511 519,439 4,364,621 958,610 2,126 33,429
50 to 85 16,552 629,999 57,282 985,929 115,289 868 6,514
20 to 50 20,888 441,082 105,345 696,130 319,850 622 5,895
Total 72,107 3,858,590 682,065 6,046,677 1,393,747 1,401 45,833