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Research Paper
Title: Natural regeneration in relation to environment in the mixed conifer forest type of California
Author: Fowells, H. A., and Stark, N. B.
Date: 1965
Source: Res. Paper PSW-RP-24. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U.S. Department of Agriculture; 14 p
Station ID: RP-PSW-024
Description: Germination, survival, and growth of ponderosa pine, sugar pine, white fir, and incense-cedar were studied in relation to such environmental factors as air and soil temperatures, light intensity, and soil moisture. The germination of ponderosa pine was best, followed by sugar pine, incense-cedar, and white fir. After 5 years, sugar pine had the highest survival rate, followed by ponderosa pine, incense-cedar, and white fir. Highest survival occurred on a cleared, north-facing slope. Natural regeneration of the pines can succeed with protection from rodents and elimination of competition.
Key Words: Pinus ponderosa, Pinus lambertiana
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Citation
Fowells, H. A., and Stark, N. B 1965. Natural regeneration in relation to environment in the mixed conifer forest type of California Res. Paper PSW-RP-24. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U.S. Department of Agriculture; 14 p.