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Figure 18.9--Average carbon uptake on land by age class of regeneration after harvest (Birdsey 1992).

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Carbon uptake by age class, in tons per acre per year:

Age	Carbon
0-5	-1.1
5-10	-0.8
10-15	0.9
15-20	1.6
20-25	1.8
25-30	1.5
30-35	1.2
35-40	1.1
40-45	1
45-50	1