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Themes: Measuring, modelling and forecasting

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186 Search Results

  • Publications

    [Archive] Predicting the productivity of sitka spruce on upland sites in northern Britain

    Lead Author: R. Worrell
    The research described in this Bulletin integrates the main environmental factors influencing the growth of Sitka spruce at high elevations in order to estimate future yield class.
  • Publications

    [Archive] Top diameter sawlog tables

    Lead Author: Forestry Commission
    This Field Book describes the top diameter method for estimating the volume of logs which is usually confined to softwood sawlogs. This method is less time consuming and so cheaper than the more traditional mid diameter method and is best suited to batches of uniform length logs. The description of logs in terms of top […]
  • Publications

    [Archive] Forestry Practice (10th edition)

    Lead Author: B. G. Hibberd
    A summary of methods of establishing, maintaining and harvesting forest crops with advice on planning and other management considerations for owners, agents and foresters.
  • Publications

    [Archive] Thinning control (3rd edition)

    Lead Author: T.J.D. Rollinson
    This booklet is designed for field use. It provides a simple guide to the control of volume to be removed when marking a thinning. There are three sections. The first section describes the Yield Class system and the assessment of yield class in a stand. The second section covers thinning practice, that is, the type, […]
  • Publications

    [Archive] Mid diameter sawlog tables

    Lead Author: Forestry Commission
    This Booklet provides information on the mid diameter method, which is the traditional method for estimating the volume of logs. The first edition of this work was called the Metric volume ready reckoner for round timber.
  • Publications

    [Archive] Yield models for forest management

    Lead Author: P.N. Edwards
    This booklet, with its associated yield models and curves, replaces Forestry Commission Booklet Number 34 Forest Management Tables (Metric) by G. J. Hamilton and J. M. Christie, which was published by HMSO in 1971. Yield models can be constructed to simulate the effects of any silvicultural treatment, and the ‘normal yield tables’ included in the […]
  • Publications

    [Archive] Investment appraisal in forestry

    Lead Author: R.J.N. Busby
    The purpose of this Booklet is to outline the basic concepts of investment appraisal as they apply to forestry, to provide tables of use in appraisal and to illustrate their application to a variety of cases in forestry.
  • Publications

    [Archive] Spatial analysis of forest growth

    Lead Author: P.H. Nicholls
    This paper presents an abridged account of a study by the author in 1978, which is intended to develop the understanding of spatial variations in the growth of trees and refinement of the analytical techniques used. The results of the yield analysis at the national level are applied on a compartment basis in two study […]
  • Publications

    [Archive] Standard time tables and output guides

    Lead Author: Forestry Commission
    The demand from private forestry for guidance on payment of workers has increased enormously over the past few years and to meet these needs, the Forestry Commission has decided to publish current tables in the form of a Booklet every few years.
  • Publications

    [Archive] Forestry Practice (9th edition)

    Lead Author: O. N. Blatchford
    A summary of methods of establishing, maintaining and harvesting forest crops with advice on planning and other management considerations for owners, agents and foresters.
  • Publications

    [Archive] The wood production outlook in Britain – a review

    Lead Author: Forestry Commission
    The increasing concern throughout the world about the future availability of fossil fuels and other finite resources has emphasised the need for appraising the balance of wood demand and supply into the next century, and in particular its implications for wood production and forest strategy in Great Britain. This led the Forestry Commissioners to invite […]
  • Publications

    [Archive] Forest mensuration handbook

    Lead Author: G.J. Hamilton
    Measurement of timber is required for several purposes. The most obvious of these, perhaps, is the need to quantify forest produce for sale. Measurement of timber is also required in management, notably for planning purposes and for control of resources. This publication is intended to provide the information necessary to meet the needs of measurement […]
  • Publications

    [Archive] Production and use of tubed seedlings

    Lead Author: Alan J. Low
    The production and use of tubed conifer seedlings in Britain have been studied between 1968 and 1973 in an extensive research and development programme based initially on Canadian practice. Results from the many nursery and forest experiments are described and form the basis for practical recommendations (see Chapter 6) on raising and planting tubed seedlings.
  • Publications

    [Archive] Influence of spacing on crop characteristics & yield

    Lead Author: G.J. Hamilton
    The analysis described in this paper was designed to provide quantitative information on the effects of spacing on yield and the components of yield. It is preceded by a brief review of the more important features of the history of these spacing experiments.
  • Publications

    [Archive] Volume tables for smallwood and round pitwood

    Lead Author: G.J. Hamilton
    The tables contained in this booklet are designed to provide estimates of volume from length and top diameter measurements. The length and top diameter specifications of pitwood are unique, and require tables specially designed to cater for these specifications. The smallwood tables provide volumes of small diameter roundwood, other than pitwood, where conventional length and […]
  • Publications

    [Archive] Timber measurement for standing sales using tariff tables

    Lead Author: G.J. Hamilton
    The methods of measurement described in this Booklet are intended to be used primarily in connection with the sale of standing timber. The procedures described involve the use of tariff tables which have been used for this purpose by the Forestry Commission since 1956. The tariff system of measurement has subsequently proved efficient and reliable, […]
  • Publications

    [Archive] Thinning control in British woodlands (metric)

    Lead Author: R.T. Bradley
    This booklet provides a simple guide to the volume to be removed when thinning pure even-aged stands, or with suitable modifications, when thinning woods of mixed species and/or of uneven age. It replaces Booklet 17, the imperial version, from 1966.
  • Publications

    [Archive] Metric conversion tables and factors for forestry

    Lead Author: J.E. Everard
    This Booklet builds on the information provided in Booklet 5 Conversion tables for research workers in forestry and agriculture. Additional tables have been added, while other tables of limited use have been removed. Numerous conversion factors have been included to enable conversions to be made for less frequently used units.