Treesearch

Outdoor experiences can become safer and more interesting if you know how to use a map and compass. This information can help you become more familiar with the map and compass.

The 10 counties in northwest Oregon have a combined land area of 5.6 million acres, or about 8,760 square miles. These include Clatsop, Columbia, Tillamook, Washington, Multnomah, Hood River, Yamhill, Clackamas, Polk, and Marion Counties. Of this total, 4.0 million acres are commercial forest land and 1.6 million acres are nonforest land. In 1959, 1.7 million acres in northwest Oregon were in farms (U. S. Bureau of the Census 1961) This total included 960,000 acres of cropland, of which 691,000 acres were harvested; the remainder was either in pasture or fallow. Woodland on farms totaled...

This publication summarizes the results of the third reinventory of six counties in southwest Washington: Clark, Cowlitz, Lewis, Pacific, Skamania, and Wahkiakurn. This block of 6 counties is one of 10 such blocks set up in the States of Oregon and Washington by the Forest Survey to facilitate orderly reinventories of the timber resources. Each block will be reinventoried at 10-year intervals and the results published in a single report for the block. The five blocks in Washington are southwest Washington, Olympic, Puget Sound, central Washington, and eastern Washington.

The report by the Forest Service on the national timber situation, "Timber Trends in the United States," presents timber resource data by States and broad regional groups. The timber resources of the Pacific Northwest (the States of Oregon and Washington) are a vital part of this national picture. Although only 9 percent of the total commercial forest land area of the 50 States is located in this area, it contains 42 percent of all the softwood sawtimber and 35 percent of all sawtimber in the Nation. In 1963, the Pacific Northwest produced 41 percent of all the softwood lumber and 84...

The following photographic sequences illustrate how vegetation differed following slash fires on two logged areas 9 miles apart. As part of a regional study to determine effects of slash burning, two pairs of plots were established on the Willamette National Forest near Oakridge, Oreg. Both areas were clearcut in 1949, and the slash was burned in October of the same year. One plot of each pair was burned along with the rest of the logging unit; the unburned plot in each pair was adjacent to the burned plot and provided a control for comparison of fire effects. The two pairs of plots shown...

Litter fall plays a fundamental role in soil formation and fertility and thus has a basic influence on forest productivity. To determine amount and timing of litter fall and how these factors are influenced by thinning, a study was begun in 1950 on Voight Creek Experimental Forest. 1 in western Washington, Resulting information is of considerable scientific interest and provides background data for studies, now underway, of nutrient cycling in forest stands. Results of an analysis made at the end of the first 6 years were reported by Dimock in 1958. 2

Why do some forest lands restock quickly and well after timber cutting but others do not? Answers have been slow in coming--partl y because of empiricism in research, partly because of the problem's general complexity, A part of the general problem concerns the poor survival of, planted Douglas-fir (Pseudotsuga menziesii var, menziesii) on cutovers densely infested with western bracken fern (Pteridium aquilinum pubescens). Though there is some evidence that bracken can serve an effective "nurse" cover to Douglas-fir, 1/ a generalization about bracken's protection of natural or planted...

This publication summarizes the results of the latest reinventory of 10 counties in northwest Oregon: Clackamas, Clatsop, Columbia, Hood River, Marion, Multnomah, Polk, Tillamook, Washington, and Yamhill. This block of counties is one of 10 such blocks set up in the States of Oregon and Washington by the Forest Survey to facilitate orderly reinventories of the timber resources. Each block will be reinventoried at 10-year intervals and the results published in a single report for the block. The five blocks in Oregon are northwest Oregon, west-central Oregon, southwest Oregon, central...

This publication summarizes the results of the latest reinventory of five counties in southwest Oregon: Coos, Curry, Douglas, Jackson, and Josephine. This block of five counties is one of 10 such blocks set up in the States of Oregon and Washington by the Forest Survey to facilitate orderly reinventories of the timber resources. Each block will be reinventoried at 10-year intervals and the results published in a single report for the block. The five blocks in Oregon are northwest Oregon, west-central Oregon, southwest Oregon, central Oregon, and northeast Oregon.

The impressive, integrated forest products industries and large forest ownerships of the Douglas-fir region are well known. Sometimes overlooked are the 53,000 owners of woodlands of under 100 acres, the average holding being 35 acres. These small tracts, totaling 1,900,000 acres, are growing timber at rates far below their potential.1 To secure localized information helpfuI to these owners, a 40-acre tract on the McCleary Experimental Forest2 in Grays Harbor County, Wash., has been managed for the past 13 years to demonstrate that an annual income can be produced from thinnings, and, at...