Pacific Northwest Research Station

Title: Regeneration outlook on BLM Lands in the Siskiyou Mountains.

Author: Stein, William I.

Date: 1986

Source: Res. Pap. PNW-RP-349. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 112 p

Station ID: RP-PNW-349

Description: A survey of timberland cut over from 1956 to 1971 in the Applegate, Evans, and Galice-Glendale areas of southwestern Oregon showed that both partial cuts and clearcuts were well stocked with a combination of regeneration that started before and after harvest cutting. Advance regeneration was a major stocking component in partial cuts. Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) was the predominant species of advance and subsequent regeneration in both partial cuts and clearcuts. Stocking differed significantly by forest type, soil series, soil origin, soil depth, and stream drainage and correlated with an array of environmental variables. Regression equations describe present stocking patterns, and other equations predict future stocking based on variables that can be observed or specified before harvest. Reforestation can be improved by paying greater attention to forest type, soil series, site conditions, and differences in plant communities when selecting harvest method and reforestation techniques.

Keywords: regeneration (stand), regeneration (natural), regeneration (artificial), clearcutting systems, partial cutting, stand development, Oregon (Siskiyou mountains), southwestern Oregon

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Citation

Stein, William I.  1986.  Regeneration outlook on BLM Lands in the Siskiyou Mountains..   Res. Pap. PNW-RP-349. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 112 p