. Successional status of subalpine fir in the Cascade Range. Forests and forestry Cascade Range; Fir Cascade Range; Abies lasiocarpa. ther low elevations where they ;en expand to cover the floors of ist pockets in valleys surrounded some representative of the mja-Tsuga zone" (Daubenmire I 52). se-class distributions of species typical stands from the north- stern Washington Cascades pro- le conclusive evidence (table 3) at subalpine fir is the major cli- ix species in many spruce-fir inds. In fact, at eastern edges of ;h east-west-trending ridges (, enatchee Mountains, Chelan ountains
. Successional status of subalpine fir in the Cascade Range. Forests and forestry Cascade Range; Fir Cascade Range; Abies lasiocarpa. ther low elevations where they ;en expand to cover the floors of ist pockets in valleys surrounded some representative of the mja-Tsuga zone" (Daubenmire I 52). se-class distributions of species typical stands from the north- stern Washington Cascades pro- le conclusive evidence (table 3) at subalpine fir is the major cli- ix species in many spruce-fir inds. In fact, at eastern edges of ;h east-west-trending ridges (, enatchee Mountains, Chelan ountains, Entiat Mountains), igelmann spruce is a minor com- nent or even absent from many balpine fir stands (Franklin and appe 1963). Eastern extremities these ridges are relatively dry, spite their elevation, and Engel- mann spruce is either absent or tinned to moister Figure 6.—Subalpine fir growing on a tract burned over about 1900, near Mount Wash- ington, Willamette National Forest. ble 3.—Number of trees by size classes (diameter) and species on a 15- by 25-meter plot in each of three stands containing subalpine fir; Wenatchee Province of the Cascade Range, 1961-63 Plot and species Size class (diameter in inches) < 2 2- 4 4- 12 12- 20 20- 28 28- 36 3 feet tall Pasayten River: Subalpine fir 636 48 5 2 1 3 2 Engelmann spruce 16 5 2 1 2 4 Lodgepole pine (2) 1 Chiwawa River: Subalpine fir 116 56 2 2 4 2 ( 2 ) Engelmann spruce 8 2 6 (2) (2) 2 Western white pine 1 Grand fir (2) 8 1 1 1 Pinegrass Ridge: Subalpine fir 880 141 23 2 6 1 ( 2) Engelmann spruce 48 6 1 4 2 1 Western hemlock 8 1 Western redcedar 1 1 Western white pine 1 (2) Lodgepole pine ( 2) Douglas-fir (2) Wenatchee Province is as defined by Franklin (1965). 2Size class was represented in an adjacent part of the stand (outside the plot).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrat
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