Use of Stand Density Index as an Alternative to Stocking Percent in Upland Hardwoods

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Stand Density Index (SDI) equations were developed and presented for upland hardwoods in southern Ohio. The relationship between SDI and stocking percent from upland hardwood stocking charts were developed, and a diagram displaying this relationship is presented. Critical stand density boundaries equivalent to stocking percent on stocking charts were defined: (1) the C-level of stocking (SDI < 125), (2) the B-level of stocking (125 ≤ SDI < 215), and (3) the A-level of stocking (215 ≤ SDI ≤ 250). A fourth boundary—the region where competition-induced mortality begins—was determined through empirical evidence at an SDI = 175, or 81% stocking. How these boundaries can be utilized in various management strategies is presented.

Keywords: Stand Density Index (SDI); stocking; stocking chart; upland hardwoods

Document Type: Miscellaneous

Affiliations: School of Natural Resources, The Ohio State University, 210 Kottman Hall, 2021 Coffey Road, Columbus, OH, 43210-1085,

Publication date: September 1, 2003

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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.
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