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A Botanical Survey of the Sugar Grove Region Volume 1

A Botanical Survey of the Sugar Grove Region Volume 1


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About the Book

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 Excerpt: ...a very strong and almost instantaneous red reaction. This is remarkable in view of the abundance of organic remains which must liberate various acids in course of humification in the neutral soil while the opposite acid bank is free from any such source of acidity. Repeated tests throughout the area have uniformally shown that wherever the characteristic upland forest develops, there the soil gives a strongly acid reaction to litmus paper. The soil of the lowland forest, on the other hand, always gives a faintly acid or neutral reaction to the same test. Although such conditions have often been ignored in American ecological papers, they are clearly recognized in Europe. Warming in his "Ecology," for example, speaks of the importance of sour humus again and again. On page (i'2 he describes conditions practically identical with those found in the Sugar Grove region as follows: "Raw (sour) humus appears in forests, especially in places exposed to wind, while ordinary humus, with its earthworms and other animals, reigns in places sheltered from dessication; when ordinary humus in the beech forest has given way to raw humus because of timber falls and such like, then the beech, being no longer capable of regenerating, disappears, and is often replaced by calluna heath." While the situation is more complicated in the case of cultivated fields, it seems not unlikely that exposure is an important factor in increasing their sterility just as with the forests. This probability together with the fact that exposure and danger from wash in.large measure go hand in hand would seem to lay down very clearly the lines along which experimentation should proceed. The only practicable method of reducing exposure is, of course, reforestation. Reforestation ...


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Product Details
  • ISBN-13: 9781153304108
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 34
  • Spine Width: 2 mm
  • Width: 189 mm
  • ISBN-10: 1153304104
  • Publisher Date: 01 May 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 82 gr


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