Gottfried, G.J.

Modified skidding rules, which included restricting equipment to precleared skid trails, and winching logs to the skid trails, plus directional felling, were used in a 40-acre special logging unit to evaluate the effects on advance regeneration. Logging resulted in a small (5%) decline in total advance regeneration density in skidding areas. Conifer density was decreased by 14%; but aspen sprouting made up the difference. Total stocking was unaffected. Losses in the special unit were less than in two adjacent areas logged by conventional methods

Effects of modified skidding rules on mixed conifer advance regeneration in Arizona

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