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Instructions For Making Improvement Thinnings And The Management Of Moth-Infested Woodlands
by Various
Binding: Paperback, 56 pages
Publisher: Williams Press
Weight: 0.18 pound
Dimension: H: 0.75 x L: 8.5 x W: 0.48 inches
ISBN 10: 1408624559
ISBN 13: 9781408624555
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Book Description:
INSTRUCTIONS FOR MAKING IMPROVEMENT THINNINGS AND THE MANAGEMENT OF MOTH I N F E S T E D WOODLANDS HOW TO MAKE IMPROVEMENT THINNINGS IN MASSACHUSETTS WOODLANDS. IMPORTANCE OF THINNING. By improvement thinnings and cuttings we mean the systematic removal of a portion of the trees in a growing forest, in order to benefit the portioi that remains. It is the foresters method of cultivation, and it is the only practical wag he has of increasing the yield and improving the quality of his crop. The methods of the arboriculturist are, escept in limited cases, too costly to hare a place in practical forestry. Those people who doubt the value of forestry practices often argue against thjnnings, on the ground that natures methods must be the best. It is no more true that natures methods are best in the forest than in the orchard or garden. The practice of thinning in European forests for nearly one hundred years has established beyond a doubt that this work increases the amount and quality of the lumber. In 1830 the average annual growth in German forests was 20 cubic feet per acre, while in 1904 it was 65 cubic feet, an increase of 300 per cent., lvhich can be attributed almost entirely to the methodical thinning of their forests. Nearly 45 per cent. of the land area of Massachusetts is covered with some form of voodland growth, which can be apportioned roughly among three main types the pine forest, which has come up on abandoned fields and pastures the mixed growth, composed of hard woods, usually of seedling origin together with pine and hemlock and sprout forest. Abore an altitude of 1,200 feet spruce replaces pine. A seedling tree is one mhich has come from a seed or nut and by a sprout Tire mean one which had its origin in a sucker sent out by a stump from which a tree has been cut. The principles of thinning apply to all kinds of forest, but it is perhaps the sprout land which chiefly needs improvement. It is the largest single type, and yet, with the exception of sprout chestnut, which is used for ties and poles, this sprout land is at present producing nothing but cord wood. Proper care might bring these cord wood stands to producing saw timber. In order that one may understand the principles which underlie the process of thinning, he must know something of the physiological growth of single trees, and of that collection of trees known as a forest. Plants are made up of tissues composed of numberless small cells. These cells are largely composed of carbon derived from the carbon dioxide of the air and water...

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