Instructions for Making Timber Surveys in the National Forests;
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In our eReader you can find the full English version of the book. Read Instructions for Making Timber Surveys in the National Forests; Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Instructions for Making Timber Surveys in the National Forests;
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To quickly assess the difficulty of the text, read a short excerpt:
Errors Likely to Occur in Estimating.
The errors most likely to occur in estimating are : (1) Inaccuracy in estimating defect.
(2) Inaccuracy in the use of volume tables.
(3) Mistakes in measuring or guessing at diameters.
(4) Errors in determining heights.
(5) Failure to use the correct width of strip.
(6) Failure to include all and only trees actually within the strip.
Steps necessary to eliminate or reduce these errors to a minimum are outlined under " Field checks and inspection." The pract...ice of allowing for cull by reducing the diameter or height of individual trees will not be followed ; nor, in deter- mining the number by which to multiply the volume of a strip to get the volume of a forty, will the volume qf the strip be increased or decreased to bring it to the estimator's general impression of the forty.
Correction Factors.
It should be understood that in broken stands, interspersed with parks, etc., the acreage on the strip and the acreage of timber on the forty or other unit are entirely distinct, The 24 IXSTEUCTIONS FOE MAKING TIMBER SURVEYS.
What to read after Instructions for Making Timber Surveys in the National Forests;?
You can find similar books in the "Read Also" column, or choose other free books by United States. Forest Service. [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Errors Likely to Occur in Estimating.
The errors most likely to occur in estimating are : (1) Inaccuracy in estimating defect.
(2) Inaccuracy in the use of volume tables.
(3) Mistakes in measuring or guessing at diameters.
(4) Errors in determining heights.
(5) Failure to use the correct width of strip.
(6) Failure to include all and only trees actually within the strip.
Steps necessary to eliminate or reduce these errors to a minimum are outlined under " Field checks and inspection." The pract...ice of allowing for cull by reducing the diameter or height of individual trees will not be followed ; nor, in deter- mining the number by which to multiply the volume of a strip to get the volume of a forty, will the volume qf the strip be increased or decreased to bring it to the estimator's general impression of the forty.
Correction Factors.
It should be understood that in broken stands, interspersed with parks, etc., the acreage on the strip and the acreage of timber on the forty or other unit are entirely distinct, The 24 IXSTEUCTIONS FOE MAKING TIMBER SURVEYS.
What to read after Instructions for Making Timber Surveys in the National Forests;?
You can find similar books in the "Read Also" column, or choose other free books by United States. Forest Service. [from Old Catalog] to read onlineMoreLess
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