Lodgepole Pine--Soil Relations in the Northwest Oregon Cascade Mountains
The U.S. Forest Service has completed a detailed soil survey of the Bull Run--Sandy Area. Lodgepole pine was found to be restricted to two general soil groups, in spite of wide soil physiographic variability. These groups are: (1) well and excessively well drained, coarse and moderate coarse textured soils: and (2) poorly and very poorly drained, highly organic soils. It does not grow on the extensive well drained, medium and moderately fine textured soils, or on moderately well drained soils of any texture. Lodgepole pine is usually seral, but forms uneven aged stands that appear to be an "edaphic climax" on the very drouthy Zigzag soils.
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Document Type: Journal Article
Affiliations: Soil Scientist, Region 10 (Alaska), Forest Service, U. S. Dept. Agric., Juneau
Publication date: 01 March 1966