Forest drainage systems have been used effectively to remove excess water from poorly drained forest soils and to increase site productivity. A study was conducted in northern Michigan to determine the effects of a drainage ditch on the productivity of tamarack 65 years after ditching. Site index increased 55% and average diameter increased 145% within 5 m of the ditch. There was no apparent effect of ditching on site index beyond 80 m from the ditch or diameter beyond 20 m. North. J. Appl. For. 6:107-109, September 1989.
Document Type: Journal Article
Department of Mathematical and Computer Sciences, Michigan Technological University, Houghton, MI 49931
Publication date: September 1, 1989
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Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.