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Themes: Measuring, modelling and forecasting

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186 Search Results

  • Publications
    Forestry publication document

    Whole-tree harvesting: a guide to good practice
    Lead Author: Andy J Moffat
    This guide provides operational guidance to managers on the potential impacts of whole-tree harvesting upon the forest ecosystem. It also considers the likely risks on different sites and makes recommendations for managers faced with different harvesting options.
  • Publications
    Forestry publication document

    [Archive] Revised forecasts of the supply and demand for wood in the United Kingdom
    Lead Author: Adrian Whiteman
    Presents models of wood supply and wood product demand for the UK to 2050. The forecasts show that it is likely that wood supply will increase with demand up to 2025. After that, if no new planting is undertaken, supply will fall while demand will continue to rise (although in this respect there is a […]
  • Publications
    Forestry publication document

    [Archive] Alternative silvicultural systems to clear cutting in Britain: a review
    Lead Author: Cyril Hart
    This Bulletin is written for landowners and foresters who wish to convert all or part of a wood or forest from pure, regular, uniform, even-aged stands to mixed, irregular, uneven-aged stands – in particular for those who desire to use silvicultural systems alternative to that of extensive clear cutting, with a view to achieving diverse […]
  • Publications
    Forestry publication document

    [Archive] Provisional yield tables for poplar in Britain
    Lead Author: J.M. Christie
    Poplars are noted for their extremely rapid rates of growth. The development of new canker-and rust-resistant clones in Belgium and their introduction into Britain make them a very attractive crop to grow on suitable sites, such as former agricultural land. New tables are needed to reflect the more rapid rates of growth seen at spacings […]
  • Publications
    Forestry publication document

    [Archive] Classification and presentation of softwood sawlogs (2nd edition)
    Lead Author: Forestry Commission
    These recommendations are agreed by Forest Enterprise, the British Timber Merchants' Association, and the UK Softwood Sawmillers Association. The normal practice of the Forestry Commission will be to classify parcels of sawlogs offered for sale into four categories: green, red, short green, and log pole, for which descriptions are given. The FC aims to maximise […]
  • Publications
    Forestry publication document

    [Archive] Growing broadleaves for timber
    Lead Author: Gary Kerr
    Growing broadleaves for timber describes the silvicultural principles and practices involved in growing quality broadleaved timber in Britain. The aim of this Handbook is to update and expand one aspect of Forestry Commission Bulletin 62 Silviculture of broadleaved woodland, to focus attention on one single objective: growing high quality hardwood. This objective usually integrates well […]
  • Publications
    Forestry publication document

    [Archive] The supply and demand for wood in the United Kingdom
    Lead Author: A. Whiteman
    This paper consists of two main parts. The larger part is concerned with new models of wood product demand that have been developed at the Forestry Commission. The rest of the paper then takes these models and, comparing them with future forecasts of UK roundwood production, examines the likely future raw material balance for wood […]
  • Publications
    Forestry publication document

    [Archive] Sawmilling accuracy for bandsaws cutting British softwoods
    Lead Author: J.N. Smithies
    The dimensional accuracy with which timber is sawn is important both for its marketability and for its economic production. This Bulletin describes quality control techniques that can be used for sampling and measuring sawn timber taken from the production line in softwood sawmills. The dimensions obtained from the measuring process can be used to quantify […]
  • Publications
    Forestry publication document

    [Archive] Price-size curves for broadleaves
    Lead Author: A. Whiteman
    This paper sets out the techniques used to survey and analyse prices, discusses the relevant factors in the price formation process, and presents price-size curves for a variety of crops.
  • Publications
    Forestry publication document

    [Archive] Mid diameter volume tables (third edition)
    Lead Author: Forestry Commission
    This Field Book provides tables for estimating the volume of logs using the traditional mid diameter method. Although it is a very accurate method, it becomes less accurate as the length increases. The volume is derived from the product of the length of the log and its mean cross-sectional area. In practice it is the […]
  • Publications
    Forestry publication document

    [Archive] Classification and presentation of softwood sawlogs
    Lead Author: Forestry Commission
    These recommendations are agreed by Forest Enterprise, the British Timber Merchants' Association, and the UK Softwood Sawmillers Association. The normal practice of the Forestry Commission will be to classify parcels of sawlogs offered for sale into four categories: green, red, short green, and log pole, for which descriptions are given. The FC aims to maximise […]
  • Publications
    Forestry publication document

    [Archive] A systems approach to forest operations planning and control
    Lead Author: M.A. Pritchard (Ed)
    Computer-based systems are now commonplace in most forestry operating environments. One of the inherent features of forestry everywhere is the amount of data collected over long periods of time. Information technology has made the storage and analysis of these data a cost effective reality. Never before has the forest manager been better placed to call […]
  • Publications
    Forestry publication document

    [Archive] The silviculture and yield of wild cherry
    Lead Author: S.N. Pryor
    The silvicultural characteristics of Prunus avium are described, based on a study in which over 40 stands throughout Britain were visited.
  • Publications
    Forestry publication document

    [Archive] Farm woodland planning
    Lead Author: H. Insley (Ed)
    This Bulletin is intended to provide farmers and farm advisers who are planning to enter farm woodland planting and management with the management information required to plan and budget the operation. It seeks to achieve this by providing the facts farmers need to gear up their businesses in terms of planning, financial and operational aspects […]
  • Publications
    Forestry publication document

    [Archive] Forest health surveys 1987 Part 2: Analysis and interpretation
    Lead Author: J.L. Innes
    The aim of this part of the report is to interpret, as far as possible, the results of the 1987 survey of forest health (Bulletin 74) by attempting to establish the cause(s) of the low crown densities and the crown discoloration observed in five of our most important tree species: Sitka spruce, Norway spruce, Scots […]
  • Publications
    Forestry publication document

    [Archive] British softwoods: properties and uses
    Lead Author: T. Harding
    This Bulletin provides the information for specifiers and users to make maximum use of the increasing British resource of softwoods. Its main purpose is to establish the link between requirements for current and potential end-uses and the properties and performance of these commercially important timbers. A guide to the properties of the individual species is […]
  • Publications
    Forestry publication document

    [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
    Forestry publication document

    [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 […]