Treesearch

Between 1933 and 1940 the Civilian Conservation Corps undertook many cultural operations in the state forests of southern New Jersey; one of the most common was thinnings in predominantly oak stands on upland sites. The thinnings varied from very light - removing only trees that would soon die - to very heavy. They were usually justified on the prevalent notion that growth of the residual stems would be stimulated.

Several years ago, old-growth red spruce at high elevations in the Green Mountain National Forest were observed to be dying. Entomologists and pathologists who examined the affected area found no insect or fungus that was obviously causing the deaths. However, many of the dead and dying trees were butt-rotted by the fungus Polyporus borealis. Though it seemed unlikely that butt-rot was the cause of death, a cooperative study was begun by the Northeastern Forest Experiment Station and the Green Mountain National Forest in the spring of 1955 to determine the relationship of heart rots in red...

Woods-utilization studies were recently made on randomly selected logging operations scattered throughout Delaware. As would be expected, most of the operations studied were in pine stands in the southern part of the state. They showed that very close utilization of the trees cut was the general rule.

This report presents the findings of the first comprehensive survey of the forests of New York, made in the period 1949 to 1952, by the Forest Service, U.S. Department of Agriculture, in cooperation with the New York Department of Conservation. The purposes of this survey were: (1) to make a field inventory of forest land and of the present supply of standing timber; (2) to ascertain the current rate of timber growth; (3) to determine how much the timber resource is being reduced through industrial and domestic uses, fire, and other causes; and (4) to interpret and correlate these findings...

This is a report on the findings of the forest survey made in Massachusetts as part of a nationwide forest survey that is being carried on by the Forest Service, U.S. Department of Agriculture. This report shows, for the year 1953, the area and condition of the forest land, the volume and quality of standing timber, the rates of timber growth and mortality, and the extent of timber cutting for forest products. Field work for this survey was begun in February 1953 and was completed in March 1954.

This report presents the results of a survey of the forests in Ohio, as a part of the national survey of forest resources. The purpose of this survey is: (1) to make a field inventory of the present supply of standing timber, (2) to find out how fast this supply is being increased through growth, (3) to find out how it is being diminished through industrial and domestic uses, fire, insects, disease, and other causes, (4) to determine the present consumption of forest products, and (5)to interpret and correlate these findings to aid in the formulation of private and public forest policies....

The purposes and principles of log scaling do not seem to be clearly understood, either by loggers and millmen, or by foresters.

In 1945 a partial-cutting experiment in spruce-fir silviculture was begun by the Penobscot Research Center of the Northeastern Forest Experiment Station. The Eastern Pulp Wood Company of Calais, Maine, made available for the study a tract of forest land, in Dyer Township, Washington County, Maine. This 20.6-acre tract is part of a large area that had been burned over in 1885.

The tremendous destructive capacity of forest insects in reducing our resources of usable timber is becoming increasingly apparent as the shoe of the forest economy pinches tighter. The U.S. Forest Service's recent TIMBER RESOURCE REVIEW, which presents the findings of the most comprehensive survey to date of the present and future timber supply of the United States and coastal Alaska, gives a graphic picture of their importance. For example, forest insects killed more trees in 1952 than any other agent. The growth impact (tree mortality plus growth loss) by insects alone amounted to 16...

Forest humus is one of the most interesting components of the forest environment. Its surface serves as a depository for leaf fall and needle fall, with successive depths marking stages of transmutation from the freshly fallen to the decomposed. And humus is responsive: humus type and depth are indicators of forest treatment and, to some extent, of site quality. Intrigued by these characteristics, foresters and soils men have examined them in detail and have published a wealth of scientific papers on the physical properties of humus, its classification, development, and nutrient content....