The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from Croatia
During the seven-year research period, the average annual removal was by 3274 m<sup>3</sup> higher than the average annual removal prescribed by the existing management plan (MP). The main reason lies in the high amount of salvage felling volume at 55,238 m<sup>3</sup> (38.3%...
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doaj-cd6d4c23da2342299e09597badf571662020-12-24T00:01:06ZengMDPI AGForests1999-49072021-12-01127710.3390/f12010007The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from CroatiaAndreja Đuka0Zoran Bumber1Tomislav Poršinsky2Ivica Papa3Tibor Pentek4Faculty of Forestry, University of Zagreb, Svetošimunska Street 25, 10000 Zagreb, CroatiaCroatian Forests Ltd., Forest Administration Zagreb, Lazinska Street 41, 10000 Zagreb, CroatiaFaculty of Forestry, University of Zagreb, Svetošimunska Street 25, 10000 Zagreb, CroatiaFaculty of Forestry, University of Zagreb, Svetošimunska Street 25, 10000 Zagreb, CroatiaFaculty of Forestry, University of Zagreb, Svetošimunska Street 25, 10000 Zagreb, CroatiaDuring the seven-year research period, the average annual removal was by 3274 m<sup>3</sup> higher than the average annual removal prescribed by the existing management plan (MP). The main reason lies in the high amount of salvage felling volume at 55,238 m<sup>3</sup> (38.3%) in both the main and the intermediate felling due to oak dieback. The analysis of forest accessibility took into account the spatial distribution of cutblocks (with ongoing felling operations) and the volume of felled timber for two proposed factors: (1) the position of the cutblock and (2) the position of the removal. Cutblock position factor took into account the spatial position of the felling areas/sites, while removal position factor besides the spatial reference took into account the amount of felled timber (i.e., volume) both concerning forest infrastructure network and forest operations. The analysed relative forest openness by using geo-processing workflows in GIS environment showed four types of opening areas in the studied management unit (MU): single-opened, multiple-opened, unopened and opened areas outside of the management unit. Negative effects of the piece-volume law and low harvesting densities on forest operations are highlighted in this research due to high amount of salvage felling particularly in the intermediate felling by replacing timber volume that should have come from thinnings.https://www.mdpi.com/1999-4907/12/1/7even-aged forestoak diebackgeometric forwarding distanceharvesting planning |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Andreja Đuka Zoran Bumber Tomislav Poršinsky Ivica Papa Tibor Pentek |
spellingShingle |
Andreja Đuka Zoran Bumber Tomislav Poršinsky Ivica Papa Tibor Pentek The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from Croatia Forests even-aged forest oak dieback geometric forwarding distance harvesting planning |
author_facet |
Andreja Đuka Zoran Bumber Tomislav Poršinsky Ivica Papa Tibor Pentek |
author_sort |
Andreja Đuka |
title |
The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from Croatia |
title_short |
The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from Croatia |
title_full |
The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from Croatia |
title_fullStr |
The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from Croatia |
title_full_unstemmed |
The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from Croatia |
title_sort |
influence of increased salvage felling on forwarding distance and the removal—a case study from croatia |
publisher |
MDPI AG |
series |
Forests |
issn |
1999-4907 |
publishDate |
2021-12-01 |
description |
During the seven-year research period, the average annual removal was by 3274 m<sup>3</sup> higher than the average annual removal prescribed by the existing management plan (MP). The main reason lies in the high amount of salvage felling volume at 55,238 m<sup>3</sup> (38.3%) in both the main and the intermediate felling due to oak dieback. The analysis of forest accessibility took into account the spatial distribution of cutblocks (with ongoing felling operations) and the volume of felled timber for two proposed factors: (1) the position of the cutblock and (2) the position of the removal. Cutblock position factor took into account the spatial position of the felling areas/sites, while removal position factor besides the spatial reference took into account the amount of felled timber (i.e., volume) both concerning forest infrastructure network and forest operations. The analysed relative forest openness by using geo-processing workflows in GIS environment showed four types of opening areas in the studied management unit (MU): single-opened, multiple-opened, unopened and opened areas outside of the management unit. Negative effects of the piece-volume law and low harvesting densities on forest operations are highlighted in this research due to high amount of salvage felling particularly in the intermediate felling by replacing timber volume that should have come from thinnings. |
topic |
even-aged forest oak dieback geometric forwarding distance harvesting planning |
url |
https://www.mdpi.com/1999-4907/12/1/7 |
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