Estimation of wood residues from small-scale commercial selective logging and sawmilling in tropical rain forests of south-western Ethiopia

Abstract

The quantity and type of wood residue generated from small-scale selective logging and sawmilling operations were estimated and the combined recovery rate, i.e. the potential final yield from a tree was determined. The log recovery rate and lumber recovery factor (LRF) were 38.3% and 36% for both operations respectively. The combined recovery rate of both operations, i.e. the potential final yield from a tree in average was 14%. With current estimated logging intensity and log recovery rate, a total of 334 trees or a logging unit of 166.6 ha is needed for production of 2,000 m(3) round wood annually required by the case study sawmill. With the current estimated 36% LRF the sawmill produces 720 m(3) of sawn wood from annually delivered 2,000 m(3) round wood. With the increase of the current average combined logging and sawmilling recovery rate from 14% to 28%, the case study sawmill would require 40% less forest land than it now requires for the same sawn wood output and at the same time usable sawn wood output would be increased by 22%

Published in

International Forestry Review
2003, Volume: 5, number: 1, pages: 45-52 Publisher: COMMONWEALTH FORESTRY ASSN

SLU Authors

• Holm, Sören

  • Department of Forest Resource Management, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Forest Science


Publication identifier

DOI: https://doi.org/10.1505/IFOR.5.1.45.17436

Permanent link to this page (URI)

https://res.slu.se/id/publ/3469