Natural regeneration in relation to environment in the mixed conifer forest type of California

H. A. Fowells; N. B Stark

Treesearch

Natural regeneration in relation to environment in the mixed conifer forest type of California

Informally Refereed

Authors:

H. A. Fowells, N. B Stark

Year:

1965

Type:

Research Paper

Station:

Pacific Southwest Research Station

Source:

Res. Paper PSW-RP-24. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U.S. Department of Agriculture; 14 p

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Abstract

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.

Keywords

Pinus ponderosa, Pinus lambertiana

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