Current issue: 55(1)
Under compilation: 55(2)
This article is a book review on a book ’Lodgepole pine in North America’ by Peter Koch, which is based partly on a synthesis of more than 6,000 papers on lodgepole pine, and partly on a systematic collection and analysis of wood and bark from branches, stems, stumps, and roots, as well as of foliage, of lodgepole pines.
This paper includes the answer of professor Pentti Hakkila for professor Mikko Kantola who in this issue of Silva Fennica gives some critical points on professor Hakkila’s earlier article (Silva Fennica vol. 9, no. 4 in 1975) on the status and future prospects of forest work science in the Finnish Forest Research Institute. He emphasises that the worry about the forest work reseach presented in his earlier article was not directed towards the research work but towards the financing of forest work science in Finland.
The article reviews the position of the Department of Forest Technology in Finnish Forest Research Institute, among Finnish establishments in research on forest work. In addition, it describes the current research programmes of the departments both in wood harvesting studies and studies on silvicultural work. The equitable aims of the former are to increase productivity, lower the cost level, ease the work and improve job satisfaction, as well as to improve the utilization of wood raw material. The latter aims at e.g. improvement of the biological results.
Future prospects are surveyed from the point of view of the goals imposed by the State on the research and, on other hand, the appropriations earmarked for forest work science. A regrettable conflict has arisen between them.
The PDF includes a summary in English.
This article is a book review of a book Établissement des courbes de variation de la densité du bois par exploration densitométrique de radiographies d’échantillons prélevés à la tariére sur des arbes vivants’ by Hubert Polge.
Due to the high level of salaries and cost of social security, strict ergonomic standards, specific logging conditions, predominance of private ownership, and strong influence of environmental and conservation aspects, the Nordic countries have been forced to develop completely new logging technology to meet their own specific requirements. Demanding domestic markets have created a strong base for the production and export of forest machines. In the 1980’s Finland has become the leading manufacturer of logging machinery in Europe.
The Finnish logging technology rests typically on the log-length method and the use of load-carrying forwarders. This constrains the export of logging machinery in many countries, but as increasing emphasis is placed on thinnings, improved timber recovery, productivity, ergonomics, and protection of environment, increasing interest is shown in this technology.
The paper presents a synthesis of logging in Finland. The technical logging conditions, development of mechanization, present technology, productivity of work, and forest machine industry are explained and reviewed from the view point of a foreign reader.
The PDF includes a summary in Finnish.