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Nordvall, Per, 2011. Nyttjande av det digitaliserade stickvägsnätet vid skogsgödsling med traktor. Second cycle, A1E. Umeå: SLU, Dept. of Forest Resource Management



Forest fertilization had its peak in the late 60´s, when almost 200 000 ha was fertilized annually. The silviculture of today has high demands for timber production at the same time as the demand for nature conservation increases. It means that it’s necessary to produce more volume in smaller areas in the future. The use of DGPS equipment has in modern forestry in Sweden become more and more common. If the positions of the machine are stored on a regular basis with not too long intervals (up to 30 seconds), it’s possible to digitize the driving paths.
This work has been conducted in SCA’s Västerbotten and Jämtland districts and the purpose was to: investigate if the use of digitized strip roads obtained from thinning a few years earlier increases productivity (ha/h) and efficiency (fertilized area per traveled kilometer) in forest fertilization with tractor.
The efficiency increased from 4,42 to 4,75 fertilized hectares per traveled km for areas were the drivers had access to the digitized strip roads. In areas where drivers felt that they had some help or big help of this information the proportion of fertilized area increased from 74,9 % to 86,6 %. Proportion fertilized area is a quota between the fertilized area and the total area of the stand. The drivers themselves argued that they had the greatest advantage of the digitized roads in small stands with easy terrain conditions and in large stands with difficult terrain conditions. The highest recorded increase of efficiency was in large areas with difficult terrain conditions, (+22%).

Main title:Nyttjande av det digitaliserade stickvägsnätet vid skogsgödsling med traktor
Authors:Nordvall, Per
Supervisor:Nordfjell, Tomas
Examiner:Athanassiadis, Dimitris
Series:Arbetsrapport / Sveriges lantbruksuniversitet, Institutionen för skoglig resurshushållning och geomatik
Volume/Sequential designation:317
Year of Publication:2011
Level and depth descriptor:Second cycle, A1E
Student's programme affiliation:SY001 Forest Science - Master's Programme 300 HEC
Supervising department:(S) > Dept. of Forest Resource Management
Keywords:Skogsgödsling, Produktivitet, Effektivitet, GPS-teknik
Permanent URL:
Subject. Use of subject categories until 2023-04-30.:Forestry production
Forest engineering
Deposited On:20 Jan 2012 07:51
Metadata Last Modified:20 Apr 2012 14:24

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