Reproduction following small group cuttings in virgin Douglas-fir.

Abstract

Quick and adequate regeneration of Douglas-fir forests as they are harvested is a major forest management problem in the Puget Sound region. Clear-cutting by staggered settings has not always resulted in adequate regeneration even where no part of the area is more than one-fourth mile from a seed source. Single tree selection, experimented with extensively, has many times been followed by excessive windthrow, injury, decay, and shock to residual trees. Furthermore, tree selection has favored regeneration of the more tolerant species of the stand over the more valuable Douglas-fir. However, progressive cutting of small groups, starting in overmature or defective concentrations, might combine the benefits of selection and clear-cutting into a reasonable compromise.

Citation

Worthington, Norman P. 1953. Reproduction following small group cuttings in virgin Douglas-fir. PNW Old Series Research Notes No. 84, p. 1-5