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Bulletin (Volume 1)

Bulletin (Volume 1)


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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: NOTES ON THE GROWTH OF WESTERN YELLOW PINE IN THE BLACK HILLS Gordon Parker The only tree of commercial importance in the Black Hills of South Dakota is the Western Yellow Pine (Pinus ponderosa scopulorum, Engelm.). There are a few other trees in that section which sometimes attain timber size, notably white spruce (Picea canadensis, [Mill.] B.S.P.), quaking aspen (Populus tremuloides, Michx.), and in one very small area a little lodgepole pine (Pinus murrayana, Oreg. Com.), but they are all either so poor in quality or so small in quantity that they practically never appear in the local markets. Last summer a study was undertaken in the Black Hills National Forest to determine a definite relation between the age of this western yellow pine and its diameter at breast height for that region. The writer assisted in collecting and working up the data on this study. A brief account of the work and of its results may be of interest. The data was collected on ten different sections in five townships, thus largely obviating the effect of any one set of factors of locality since average figures were desired. Several logging operations in different places afforded an excellent opportunity for the work on trees of timber size (twelve inches D B H and up), and sufficient trees of smaller sizes were cut to give at least twelve trees in each inch class of D B H down to six inches. There was little or no variation of stump height according to the size of the tree. The stumps were usually cut about as low as the nature of the ground would permit, the average height of stump of 366 trees being 1.28 feet, or 15.36 inches. An analysis of seedlings up to eighteen inches high was made on a total of 313 trees, the measurement being total height growth for age. The results gave the...


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Product Details
  • ISBN-13: 9780217689717
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 229 mm
  • No of Pages: 42
  • Spine Width: 3 mm
  • Width: 152 mm
  • ISBN-10: 021768971X
  • Publisher Date: 14 Oct 2010
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 77 gr


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