Archive image from page 43 of A descriptive analysis of Montana's. A descriptive analysis of Montana's forest resources descriptiveanaly11schw Year: 1975 CD CD a o _Q § CO) TOTAL 0 1965 '66 '67 '68 '69 70 Year 71 72 73 Figure harvest and public timber harvest in Montana. On private lands, harvest climbed to 402 million board feet in 1971. Large industrial ownerships provide most of the harvest from private land. The year- to-year fluctuations in private harvests caused by changes in market conditions have not changed total harvest levels by very much. In describing h
Archive image from page 43 of A descriptive analysis of Montana's. A descriptive analysis of Montana's forest resources descriptiveanaly11schw Year: 1975 CD CD a o _Q § CO) TOTAL 0 1965 '66 '67 '68 '69 70 Year 71 72 73 Figure harvest and public timber harvest in Montana. On private lands, harvest climbed to 402 million board feet in 1971. Large industrial ownerships provide most of the harvest from private land. The year- to-year fluctuations in private harvests caused by changes in market conditions have not changed total harvest levels by very much. In describing harvesting from Montana's forests, both the actual level of timber harvests and the calculated 'allowable harvest' should be considered. The allowable harvest is a long-term planning tool that establishes rates of timber harvesting that will best meet objectives of particular owners. On public lands, one management objective is usually to develop forest stands with high rates of growth. For commercial forest lands stocked with old-growth timber characterized by low growth rates, the rate of cutting suggested by the calculated allowable harvest exceeds the growth of those stands. As more thrifty stands are established, though, forestwide average rates of growth and rates of cutting become nearly equal. The allowable harvest changes over time in response to the revision of timber management plans of individual man- agement units. Recently, the allowable harvest and actual harvest for the four principal forest land managing agencies in the State have been as follows: 32
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Photo credit: © Actep Burstov / Alamy / Afripics
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