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Technical Considerations in Harvesting and Sawing Defective Hardwood Butts

Thomas W. Church

出版	U.S. Northeastern Forest Experiment Station, 1971
URL	http://books.google.com.hk/books?id=v1NVtPA7ma4C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

How important are butt defects in hardwoods? We have no reliable estimate of the volume or value of timber lost through basal injuries. However, butt defects will be almost as important in future timber harvests as they are at present. Why? Because most butt defects are due to two causes: fire and logging. Damage from both these agents may be reduced, but it certainly will not be eliminated.