Canadian Forest Service Publications

The distribution of Douglas-fir foliage by age. 1962. Silver, G.T. Forestry Chronicle 38(4): 433-438.

Year: 1962

Issued by: Pacific Forestry Centre

Catalog ID: 23884

Language: English

Availability: PDF (download)

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The percentage of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, foliage by age was calculated for four trees for four consecutive years. The percentage of foliage for the five youngest years was 28, 23, 17, 13, and 10 per cent, respectively. Distribution of foliage by age was fairly uniform within individual branches. Although there was considerable variation between crown levels, trees, and years, the averages were reasonably uniform.