Tree Measurements On Large Scale Aerial Photographs

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Tree Measurements On Large Scale Aerial Photographs

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Author : Thomas Eugene Avery
language : en
Publisher:
Release Date : 1973

Tree Measurements On Large Scale Aerial Photographs written by Thomas Eugene Avery and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Aerial photography in forestry categories.

Tree Diameters And Volumes From Large Scale Aerial Photographs

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Author : A. H. Aldred
language : en
Publisher:
Release Date : 1972

Tree Diameters And Volumes From Large Scale Aerial Photographs written by A. H. Aldred and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Aerial photographs categories.

Discussion of the problem of estimating tree diameters and volumes from measurements on large-scale aerial photographs.

Measurement Of Tropical Trees On Large Scale Aerial Photographs

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Author : A. H. Aldred
language : en
Publisher: Forest Management Institute
Release Date : 1976

Measurement Of Tropical Trees On Large Scale Aerial Photographs written by A. H. Aldred and has been published by Forest Management Institute this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Aerial photogrammetry categories.

How To Interpret Tree Mortality On Large Scale Color Aerial Photographs

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Author : Frank C. Croft
language : en
Publisher:
Release Date : 1982

How To Interpret Tree Mortality On Large Scale Color Aerial Photographs written by Frank C. Croft and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Aerial photography in forestry categories.

A New Stereotope Digitizer System For Measuring And Processing Tree Data From Large Scale Aerial Photographs

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Author : R. Brun
language : en
Publisher:
Release Date : 1972

A New Stereotope Digitizer System For Measuring And Processing Tree Data From Large Scale Aerial Photographs written by R. Brun and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Aerial photography in forestry categories.

Large Scale Color Aerial Photography As A Tool In Sampling For Mortality Rates

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Author : David Arthur Hamilton
language : en
Publisher:
Release Date : 1981

Large Scale Color Aerial Photography As A Tool In Sampling For Mortality Rates written by David Arthur Hamilton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Aerial photography in forestry categories.

New Stereotop Digitizer System For Measuring And Processing Tree Data From Large Scale Aerial Photographs

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Author : Forest Management Institute (Canada)
language : en
Publisher:
Release Date : 1972

New Stereotop Digitizer System For Measuring And Processing Tree Data From Large Scale Aerial Photographs written by Forest Management Institute (Canada) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.

Large Scale Color Aerial Photography As A Tool In Sampling For Mortality Rates Classic Reprint

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Author : David Alexander Hamilton Jr
language : en
Publisher: Forgotten Books
Release Date : 2018-03-17

Large Scale Color Aerial Photography As A Tool In Sampling For Mortality Rates Classic Reprint written by David Alexander Hamilton Jr and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-03-17 with categories.

Excerpt from Large-Scale Color Aerial Photography as a Tool in Sampling for Mortality Rates Mortality rates, diameter increment rates, and height increment rates are the key components of all yield predictions. Mortality rates are the weakest of the three components. Information on diameter and height increment rates is readily available from silvicultural research plots where scientists have studied growth under a wide array of environmental conditions and management strategies. In addition, in most forest survey or management planning inventories, information on current diameter and height increment rates is collected. Where such data are not readily avail able, diameter and height increment can be ob served ln a single visit to the plot. Annual rings and nodal scars provide the time scale that makes these measurements possible on many species growing in temperate forests. There is no com parable time scale for easily and accurately post dating mortality. Thus, data describing the occur rence of mortality is more difficult to obtain. Silvicultural research plots on which individual trees have been measured for many years provide a potential source of data for estimating relation ships between stand and tree characteristics and mortality rates. However, use of such data is severely weakened by the common practice of deleting plots containing heavier than average mortality from the experiment. Further, such data are not available for all species and localities and do not provide measures of current levels of mortality. Many mortality surveys estimate the amount of dead timber in a population by counting dead trees, measuring the volume of dead trees, or measuring the number of acres that contain a substantial number of dead trees. Such informa tion is of little value in predicting future mortality. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

A Preliminary Investigation Into The Use Of The Tarif System And Three Tree Selection Methods For Obtaining Douglas Fir Stand And Stock Tables From Large Scale Aerial Photography

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Author : Richard Jay McCadden
language : en
Publisher:
Release Date : 1985

A Preliminary Investigation Into The Use Of The Tarif System And Three Tree Selection Methods For Obtaining Douglas Fir Stand And Stock Tables From Large Scale Aerial Photography written by Richard Jay McCadden and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Aerial photography in forestry categories.

As a preliminary step toward the establishment of a 70 mm. aerial photo timber inventory system capable of generating accurate stand tables, stock tables, and gross volume estimates, this project focuses on the development of a system which (1) eliminates the need to measure tree height on the photos through use of the tarif system and, (2) incorporates the use of three distinct tree selection methods-- fixed plot, variable plot, and line transect sampling. The methodology is developed and applied to a 346 acre parcel of Douglas-fir forestland. The accuracy of individual tree predictions for diameter at breast height, volume, tarif number, and tree height (which is derived without traditional photo measurement) are evaluated by ground subsampling a 206- tree validation set and comparing actual and predicted values. The results show that an average underprediction of ground-measured tarif number by about 5% occurs, which in turn results in similar underpredictions of tree volume and height. The accuracy of the stand tables, stock tables, and gross volume estimates are examined by comparison to independently derived ground measurements. The photo estimates of mean gross volume per acre, using each of the three photo tree selection methods, are all within 5% of the ground-derived estimates; in all cases the 68% confidence intervals of the ground and photo estimates overlap. Graphic comparisons of the photo and ground-derived stand and stock tables are presented; they are similar, except for the inability of the photo method to accurately predict the stocking of trees less than twelve inches in stem diameter. The aerial photo system, using each of the three tree selection methods, demonstrates an ability to produce results comparable to those derived from conventional ground inventory techniques. Future research is recommended, and specific needs for this research are identified.

The Use Of Large Scale Aerial Color Photography For Assessing Forest Tree Diseases

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Author : David R. Houston
language : en
Publisher:
Release Date : 1972

The Use Of Large Scale Aerial Color Photography For Assessing Forest Tree Diseases written by David R. Houston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Aerial photography in forestry categories.