OREGON STATE UNIVERSITY

Stand Inventory

Douglas-fir (Pseudotsuga menziesii), grand fir (Abies grandis), and bigleaf maple (Acer macrophyllum) are the predominant tree species on the Cameron Tract. Minor species include red alder (Alnus rubra), Oregon white oak (Quercus garryana), Oregon ash (Fraxinus latifolia), Pacific madrone (Arbutus menziesii), Pacific yew (Taxus brevifolia), and bitter cherry (Prunus emarginata). Cascara buckthorn (Rhamnus purshiana), Pacific dogwood (Cornus nuttallii), and holly (Ilex aquifolium) are also scattered around the tract. These latter three species are often considered small trees, although they were tallied as understory shrubs for this inventory.

Based on a sample of 51 Douglas-firs from throughout the tract, average site index, base age 50, is 116. This index is low Class II on a scale of I to V, with I being the most productive for growing this species. Site is higher in the south than north, averaging 122, or low to mid Class II, in Types 301 through 413. On the other hand, it averages 114, or high Class III, in types 3401 through 3420. The best area on the tract encompasses Types 302, 303, 304, and 305, where site index averages 125, or mid Class II. The area with the lowest site encompasses Types 3401, 3407, and 3420, which averages 100, or low to mid Class III.

The merchantable timber was divided into 19 cover types. They were identified using an aerial photograph and past inventory information provided by Starker Forests. Some boundaries were later modified based on field observations. Most of the type numbers are the same as those used by Starker. One new type was added that had not been previously identified.

Each type number is unique. The first one or two digits identifies the section in which most of the acreage lies, either 34, 3, or 4. The last two digits identify the type within that section.

Cover type

The 19 merchantable timber types cover 172.1 of the 258.2 total acres of the tract. The cover types on the tract are described as follows:

Type 3401 (3.9 acres): Well stocked 25 year-old Douglas-fir plantation. Clumps of older residual trees, some over 100 years, are scattered throughout the type.

Type 3402 (20.7 acres): Moderately well stocked 60- to 65 year-old Douglas-fir. The type was commercially thinned an estimated 35 years ago.

Type 3406 (6.7 acres): This type consists of three small islands with a mixture of species and ages. Trees are primarily bigleaf maple, Douglas-fir, and Pacific madrone. Conifer ages are variable, with merchantable trees ranging from 25 to 60 years or more. The type also is well stocked with pre-merchantable trees.

Type 3407 (23.9 acres): Seventy to 80 year-old Douglas-fir. Stocking is spotty, with numerous brushy openings. Type was commercially thinned an estimated 35 years ago.

Type 3408 (0.7 acres): Dry sidehill stocked primarily with Oregon white oak. Douglas-fir between 50 and 60 years-old is scattered.

Type 3420 (1.5 acres): Primarily a mixture of bigleaf maple and Oregon white oak. Douglas-fir, 40 to 50 years old, is scattered.

Type 301 (8.5 acres): Riparian type dominated by red alder and bigleaf maple. Stocking is good, and trees are well spaced. Average age is about 50 years.

Type 302 (30.6 acres): Moderately well stocked 50 to 60 year-old Douglas-fir and grand fir with scattered hardwoods. Type was commercially thinned an estimated 25 to 30 years ago.

Type 303 (25.3 acres): Well stocked 65 year-old Douglas-fir. Scattered trees are 100 to 200 years and older. Type was commercially thinned an estimated 25 to 30 years ago.

Type 304 (18.1 acres): Variable in species and ages. Type contains primarily hardwoods, including bigleaf maple, red alder, Oregon white oak, and Pacific madrone, but also has a large component of Douglas-fir and grand fir. Most conifers are 50 to 60 years old, but some are 110 and older. The majority of the acreage in this type is in riparian areas.

Type 305 (4.1 acres): Mixture of primarily Douglas-fir and grand fir, although bigleaf maple also is common. Ages are variable. Most trees are between 50 and 60 years old, but scattered trees are 100 to 200 years and older.

Type 306 (2.2 acres): Douglas-fir consisting of a mixture of scattered residual trees up to 80 years old, younger merchantable trees 35 to 40 years old, and reproduction.

Type 307 (1.0 acres): Grass field with old, dilapidated barn (not cruised).

Type 308 (5.8 acres): Well-stocked 65 year-old Douglas-fir. Scattered trees are 100 to 200 years and older. Type was commercially thinned an estimated 25 to 30 years ago. It is similar to Type 303, except that it contains more older trees and grand fir.

Type 401 (4.0 acres): Mixture of primarily Douglas-fir, grand fir, and Oregon white oak. The type was left as a visual buffer for the clearcut to the south. Hardwood stocking increases from east to west, while conifer stocking decreases. Conifers are 50 to 60 years old.

Type 404 (4.9 acres): Type contains two islands. Stocking which consists primarily of young Douglas-fir and grand fir is uneven. Most trees are 30 to 35 years old, but scattered trees range up to about 70 years.

Type 405 (5.7 acres): Poorly stocked Douglas-fir. Type contains several non-stocked openings dominated by brush. Ages are variable, ranging from 20 to up to 70 years, with an average of about 40.

Type 406 (1.3 acres): Douglas-fir that is part of the visual buffer for the clearcut to the south. Many of the trees in this type have blown down, so that those remaining are widely spaced. The windthrown trees have been salvaged.

Type 413 (2.3 acres): Riparian type that is a mix of primarily bigleaf maple, red alder, and grand fir. Stocking is good, and trees are well spaced. Conifers generally are 50 to 60 years old, although some are 90 years or older.

Plantations (78.5 acres): Mixed species seedlings (not cruised).

Roads (6.6 acres)