. Old growth in northwestern California national forests [microform]. Old growth forests California, Northern; Forest reserves California, Northern; National parks and reserves California, Northern. Figure 21—Dense cover of pinemat manzanita in old-growth lodgepole pine. Stand characteristics—In northwestern California, lodgepole pine is found in association with Jeffrey pine, ponderosa pine, western white pine, red fir, white fir, and mountain hemlock. In this inventory, only 7 percent of the sawtimber lodgepole pine area was in pure pine stands. In addition, although lodgepole pine may make
. Old growth in northwestern California national forests [microform]. Old growth forests California, Northern; Forest reserves California, Northern; National parks and reserves California, Northern. Figure 21—Dense cover of pinemat manzanita in old-growth lodgepole pine. Stand characteristics—In northwestern California, lodgepole pine is found in association with Jeffrey pine, ponderosa pine, western white pine, red fir, white fir, and mountain hemlock. In this inventory, only 7 percent of the sawtimber lodgepole pine area was in pure pine stands. In addition, although lodgepole pine may make up the plurality of stocking, the largest trees in the type are often not lodgepole pine. Seventy-three percent of the trees at least 30 inches in diameter in old-growth lodge- pole pine were red fir, 15 percent were western white pine, and 9 percent were white fir, and 3 percent were mountain hemlock; none were lodgepole pine. The largest lodgepole pine measured in the inventory was 32 inches, but it was not found in old growth. The overstory of old-growth lodgepole pine is shorter than most of the other old-growth types. On average, the upper canopy is 78 feet tall. In general, lodgepole pine old growth is distinguished from other old-growth types in northwestern California by the density of small-sized trees and the percentage of cover of the shrub layer, which is often denser than the cover of the tree canopy (see fig. 21). Most of the small-sized trees are lodgepole pine. The percentage of cover of shrubs averages 40 percent and is less than 2 feet tall. The most common shrub is pinemat manzanita. Other common shrubs are squaw carpet and huckleberry oak. Overall density of snags is greater in old-growth lodgepole pine than some of the other types because of the density of snags less than 20 inches in diameter (see table 8). 35. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and app
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