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Articles 871 - 900 of 920
Full-Text Articles in Forest Sciences
The Preservative Treatment Of Aspen, Frank H. Kaufert
The Preservative Treatment Of Aspen, Frank H. Kaufert
Aspen Bibliography
Aspen is one of our least durable woods and is known to deteriorate or rot rapidly under conditions favoring decay. Records on aspen used under moist and severe decay conditions have shown that serious decay and failure of the product may develop in three to four years. Some present and potential uses for aspen involving conditions favorable to decay and in which this lack of natural durability is a factor are: (1) fence posts, (2) railroad cross ties, (3) mine timbers, (4) planking for secondary bridges, (5) sills and other construction members in buildings, (6) the lower logs of log …
Aspen For Veneer, Hereford Garland
Aspen For Veneer, Hereford Garland
Aspen Bibliography
In considering possible uses for the large supply of aspen in the Lake States, veneer and plywood manufacture should not be overlooked. Although aspen is not currently in great demand as a veneer species, the reason is not because of technical deficiencies of the wood for this purpose, but rather because there is no appreciable veneer industry in the region adapted for using aspen as small logs, the form in which it is most available.
Aspen Defiberization And Refining Of Product, Robert Craig Jr.
Aspen Defiberization And Refining Of Product, Robert Craig Jr.
Aspen Bibliography
Because of the great demand for wood fiber and because there is an abundance of aspen available1/ for this purpose, its conversion into a usable fiberized material offers possibilities. It also affords an outlet for low-quality bolts developed in any aspen logging operation or from land of poor quality.
Logging Costs Of Aspen [Populus Tremuloides], Z.A. Zasada, P.J. Zehngraff
Logging Costs Of Aspen [Populus Tremuloides], Z.A. Zasada, P.J. Zehngraff
Aspen Bibliography
No abstract provided.
Aspen: The Utility Timber Crop Of Utah, James D. Curtis
Aspen: The Utility Timber Crop Of Utah, James D. Curtis
Aspen Bibliography
No abstract provided.
Chemical Utilization Of Aspen, Geo J. Ritter, Ralph L. Hossfeld
Chemical Utilization Of Aspen, Geo J. Ritter, Ralph L. Hossfeld
Aspen Bibliography
Chemical utilization of raw materials depends largely on the chemical composition and the chemical and physical properties of the raw materials under consideration. The utilization of wood is no exception to this principle. Thus, a wood having a low percentage of cellulose is uneconomical as a source of wood sugar or pulp for paper; and one of an excessively knotty character is undesirable for chemical conversion Woods having several undesirable characteristics generally fall within the classification of species little used for the purpose. Fortunate! aspen falls outside this class.
Aspen Lumber For Building Purposes, Louis W. Rees
Aspen Lumber For Building Purposes, Louis W. Rees
Aspen Bibliography
Recent shortages of lumber for building purposes make it desirable to seek out all possible supplies of additional lumber. Aspen, according to a study made in northern Minnesota during 1944, 1/ may be a source of lumber largely untapped. The results of that study are the main basis of this paper.
Seasoning Of Aspen, Harvey H. Smith
Seasoning Of Aspen, Harvey H. Smith
Aspen Bibliography
Aspen is nor; the major forest type in the Lake States, and extensive stands are reaching maturity. Increasing quantities are being cut, and much is nor; being put to new and more exacting uses that require better air - seasoning and kiln-drying practices. The recent favorable market for green aspen lumber appears to be falling off, and the time may soon come when operators are no longer able to move green aspen. Such a change can be met by manufacturing better-quality aspen lumber and by carefully seasoning it to the desired moisture content to make it more acceptable. This report …
Machining And Related Properties Of Aspen, Edward M. Davis
Machining And Related Properties Of Aspen, Edward M. Davis
Aspen Bibliography
Aspen occupies 20 million acres of Lake States timber land, or 39 percent of the total forest area. In 1945 there were 6 1/3 billion feet of aspen saw timber 9 inches d.b.h. and larger, and a larger cubic volume of smaller material. The cut of aspen lumber was 152 million board feet in 1946, and the forest could sustain a much larger annual cut.
Aspen For Pulp And Paper, E. R. Schafer
Aspen For Pulp And Paper, E. R. Schafer
Aspen Bibliography
Although the use of hardwoods for pulp and paper manufacture has increased considerably during recent years in the Lake States, the pulpwood consumed in this region consists largely of softwood species of which about one quarter is obtained from foreign sources. The wood resource, on the other hand, is comprised to a large extent of hardwoods, predominantly aspen, with the maples, oaks, and several other species available in lesser amounts. The present stand of aspen in the Lake States is estimated at nearly 20 million acres with a total volume of merchantable timber of about 32 1/2 million cords. The …
Milling Of Aspen Into Lumber, C. J. Telford, F. B. Malcolm
Milling Of Aspen Into Lumber, C. J. Telford, F. B. Malcolm
Aspen Bibliography
In the manufacture of aspen lumber, the costs of stumpage and logging approximate 65 per cent of the total, and milling and sales 35 per cent. Milling efficiency is essential, but by itself it is not assurance of a profitable operation.
Aspen For Cabin Logs, Albert W. Sump
Aspen For Cabin Logs, Albert W. Sump
Aspen Bibliography
A plentiful supply of pine and cedar logs provided the early settlers of this country with a cheap and durable material for the construction of their homes and farm buildings. Only the axe and the ingenuity of the pioneer were needed to erect a shelter against the elements of nature. Early in the 19th century, the circular saw came into use resulting in a change in building construction. The pine stands in New England and in the Lake States, considered inexhaustible in the 19th century, were converted to lumber to construct buildings necessary for the rapid development of the country. …
Aspen For Core Stock, Arlie W. Toole
Aspen For Core Stock, Arlie W. Toole
Aspen Bibliography
During recent years, aspen has been used in the Lake States region for a number of products. The war years in particular showed a marked increase in the use of aspen for pulpwood, box lumber, and many other wood products. The annual cut of aspen lumber in the region increased from approximately 67 million board feet in 1941 to 152 million board feet in 1946. In spite of this increased use, aspen still remains the only major tree species in the Lake States in which annual growth exceeds annual drain. It represents the major forest resource in this region that …
Aspen For Containers, Waldo Sands
Aspen For Containers, Waldo Sands
Aspen Bibliography
Aspen, because of its abundance in the Lake States, merits special consideration as to future management, utilization, and marketing. Although aspen lumber is used for many purposes, its chief use during the past decade has been for containers (boxes and crates). It gained its greatest prominence as container material during World War II.
Both producers and users of containers need general information as to availability and supply of aspen, its properties and usefulness for container material. With that in mind, this report on the use of aspen for containers has been prepared.
Mechanical Properties Of Aspen, R. P. A. Johnson
Mechanical Properties Of Aspen, R. P. A. Johnson
Aspen Bibliography
The clear wood of aspen has inherent properties of merit. Several of these properties are familiar to a large proportion of the general public, for some of the common types of matches are made of this wood. The requirements of wood for matches are exacting in that the wood must combine straightness of grain, ease of splitting, ease of working, and toughness To meet such rigid requirements, a wood must be suitable for other uses as well. The fact that aspen is not used more widely for other purposes lies not in the wood itself but in other factors, such …
Possibilities Of Managing Aspen, Paul Zehngraff
Possibilities Of Managing Aspen, Paul Zehngraff
Aspen Bibliography
The management of aspen or popple (Populus tremuloides) has received little attention in the past, largely because of the former abundant supply of other and more valuable tree species in the Lake States. Be- cause of a rapidly expanding market for all forest products during the past decade, particularly during the war, the attention and ingenuity of industry have turned toward the use of aspen. As a consequence, aspen has now become one of the important pulpwood species in the Lake States, and is used for many other products. That it will retain its place for some time to come …
Aspen Availability And Supply, Clarence D. Chase
Aspen Availability And Supply, Clarence D. Chase
Aspen Bibliography
A knowledge of the total and available supply of aspen is basic to a study of the aspen situation. Hence, this paper aims to show the relative position of aspen2/ as a commercial forest type in the Lake States region, both currently and potentially. The data on areas, volumes, and growth are taken from the Forest Survey made in 1933-37, brought up to January 1, 1945, by office calculations including drain studies. Areas by site quality, allowable cut calculations, and volumes of timber available (1945 to I960) are the best estimates that can be made at this time.
Aspen Properties And Uses, Zigmond A. Zasada
Aspen Properties And Uses, Zigmond A. Zasada
Aspen Bibliography
Because of the large demand for lumber during the last 10 years, and particularly during the war period, aspen has entered many new fields of use. At present there is widespread interest in the possibilities of building new industries and extending the life of old ones by increased use of aspen. Many people are interested in becoming familiar with this wood. This report has been prepared to give general information on the properties and present uses of aspen and also to help in correcting some of the existing erroneous ideas about this wood.
Response Of Young Aspen Suckers To Overhead Shade, P.J. Zehngraff
Response Of Young Aspen Suckers To Overhead Shade, P.J. Zehngraff
Aspen Bibliography
No abstract provided.
Season Of Cutting Affects Aspen Sprouting, P.J. Zehngraff
Season Of Cutting Affects Aspen Sprouting, P.J. Zehngraff
Aspen Bibliography
No abstract provided.
The Future Of Aspen In The Lake States, Z.A. Zasada, W.A. Kluender
The Future Of Aspen In The Lake States, Z.A. Zasada, W.A. Kluender
Aspen Bibliography
No abstract provided.
Shoot Blight Of Aspen And Poplar Caused By Species Of Fusicladium, W.C. Hatfield
Shoot Blight Of Aspen And Poplar Caused By Species Of Fusicladium, W.C. Hatfield
Aspen Bibliography
No abstract provided.
The Effect Of Thinning Upon The Growth And Yield Of Aspen Stands (For Ten-Year Period After Treatment). Project P-19, A. Bickerstaff
The Effect Of Thinning Upon The Growth And Yield Of Aspen Stands (For Ten-Year Period After Treatment). Project P-19, A. Bickerstaff
Aspen Bibliography
No abstract provided.
Seeding Grass On Deteriorated Aspen Range, A. Perry Plummer, George Stewart
Seeding Grass On Deteriorated Aspen Range, A. Perry Plummer, George Stewart
Aspen Bibliography
The herbaceous undercover on much of the aspen range in the Intermountain region is badly deteriorated. These areas, naturally highly productive, when revegetated can contribute greatly towards a much needed supply of range forage. One of the major obstacles to successful seeding has been the difficulty of getting the seeds covered with soil since both standing and fallen trees interfere with the use of drills, harrows, or other machinery. In the search for methods to overcome this difficulty, it was found that for open aspen stands the covering of seeds is unnecessary when the right precautions are taken in other …
The Root System Of Aspen, Maurice W. Day
The Root System Of Aspen, Maurice W. Day
Aspen Bibliography
The quaking aspen (Populus tremuloides Michx.) is widely distributed. In the Lake States region it occupies a larger area than any other tree species. Because it occupies such a large are and because of the difficult silvicultural problem which it presents, this species demands careful investigation. This present study was initiated with the objective of adding to the knowledge of the silvics of the species.
Influence Of Aspen, Young Lodgepole Pine, And Open Grassland Types Upon Factors Affecting Water Yield, E.G. Dunford, C.H. Niederhof
Influence Of Aspen, Young Lodgepole Pine, And Open Grassland Types Upon Factors Affecting Water Yield, E.G. Dunford, C.H. Niederhof
Aspen Bibliography
Burned and cutover lands in the Rocky Mountains present a distinct problem in watershed management. Many of these areas support a cover of grass or aspen rather than their original stand of lodgepole pine or spruce. Generally the new cover provides adequate protection from erosion, but there has been question regarding its other watershed qualities. In order to evaluate some of these qualities this preliminary study was undertaken in Colorado. The results indicate that, from the standpoint of water available for streamflow, aspen and grass are probably superior to a dense coniferous forest.
How To Reseed Utah Range Lands, A. Perry Plummer, Richard M. Hurd, C. Kenneth Pearse
How To Reseed Utah Range Lands, A. Perry Plummer, Richard M. Hurd, C. Kenneth Pearse
Aspen Bibliography
Additional low cost forage is urgently needed by Utah's range livestock industry. Seeding of depleted tracts in accordance with recently developed methods and principles will help supply this forage and is entirely feasible. Where the value of the increased forage will repay the cost of planting, careful reseeding of selected sites is fully justified.
The important part that reseeding can play in restoring ranges to their former capacity has been demonstrated. Although satisfactory results can be obtained on many sites during average or better years, much more study is needed to insure consistent success in abnormal years and to extend …
Suitability Of Birch, Aspen And Sugarberry For Rayon Pulp: Results Of Certain Sulfite Pulping And Bleaching Experiments, H. Nihlen, J.N. Mcgovern
Suitability Of Birch, Aspen And Sugarberry For Rayon Pulp: Results Of Certain Sulfite Pulping And Bleaching Experiments, H. Nihlen, J.N. Mcgovern
Aspen Bibliography
No abstract provided.
Report On Sanitation And Fertilization Tests In Aspen Stands On Bright Angel Point, Grand Canyon National Park, Stuart R. Andrews
Report On Sanitation And Fertilization Tests In Aspen Stands On Bright Angel Point, Grand Canyon National Park, Stuart R. Andrews
Aspen Bibliography
No abstract provided.
The Effect Of Fomes Ignarius On Populus Tremuloides In The Gallatin National Forest Of Montana, Marvin F. Kelly
The Effect Of Fomes Ignarius On Populus Tremuloides In The Gallatin National Forest Of Montana, Marvin F. Kelly
Aspen Bibliography
No abstract provided.