Search results for: Measuring, modelling and forecasting

This bulletin is a study in forest mensuration which has arisen out of investigations into the timber content of British woodlands. It deals primarily with the relationship that exists between the volume of a tree and its sectional area at breast height; a relationship here called, for convenience, the volume-basal...

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...

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...

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...

Stem straightness is important in determining tree and log value. The ability to make an effective assessment before harvesting is useful for forest managers and practitioners to improve forecasting, planning, marketing and resource use. This Technical Note describes three methods for assessing stem straightness in standing trees: visual assessment, photogrammetric...

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...

This Inventory Report is one of a series of publications reporting the outputs of the Forestry Commission National Forest Inventory. It forms part of the 25-year forecast of softwood availability series, which includes the following reports:• Standing timber volume for coniferous trees in Britain• 25-year forecast of softwood timber availability•...

This Inventory Report is one of a series of publications reporting the outputs of the Forestry Commission National Forest Inventory. It forms part of the 25-year forecast of softwood availability series, which includes the following reports:• Standing timber volume for coniferous trees in Britain• 25-year forecast of softwood timber availability•...

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...

This publication combines and replaces Forestry Commission Field Book 1: Top diameter sawlog tables and Forestry Commission Field Book 11: Mid-diameter volume tables. The top diameter method for assessing volume is restricted to groups of sawlogs, preferably of uniform length up to 8.4 m. Volume determination using the mid-diameter method...

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...

Description of the Commission's Expert Group on Timber and Trade Statistics