A research bulletin produced as part of the Forest Power project examined stump wood transport.
Logging-on is featuring this bulletin as an example of the many relevant and interesting bulletins that were produced as part of the Forest Power project. The bulletin is titled “Transport of stump wood: A comparison of three different transport systems”. The author was Dimitris Athanassiadis of SLU. Stump harvesting in Sweden has much potential, with the Swedish Forest Agency indicating that 10,000 to 20,000 ha (5 to 10%) of the annual felling area is available. The study aimed to examine how factors such as transport distance, size of the stand and number of stumps per hectare affects the costs of the three systems investigated. The research examined the following three systems:
System 2 (shredding stumps at roadside) was the most cost effective system up to 84 km from the heating plant. System 1 was viable up to 22 km and System 3 only up to 9 km. The most important factor affecting system costs was the number of stumps per hectare. A 25% reduction in the number of stumps per hectare resulted in a 20 to 24% system cost increase. Large numbers of stumps per hectare are required to make stump harvesting profitable.
Source: http://www.forestpower.net/sivu.aspx?luokka_id=585&main=2
Logging-on is featuring this bulletin as an example of the many relevant and interesting bulletins that were produced as part of the Forest Power project. The bulletin is titled “Transport of stump wood: A comparison of three different transport systems”. The author was Dimitris Athanassiadis of SLU. Stump harvesting in Sweden has much potential, with the Swedish Forest Agency indicating that 10,000 to 20,000 ha (5 to 10%) of the annual felling area is available. The study aimed to examine how factors such as transport distance, size of the stand and number of stumps per hectare affects the costs of the three systems investigated. The research examined the following three systems:
- System 1 - Stumps are transported uncut by truck to the heating plant.
- System 2 – Stumps are coarsely shredded at a landing and then loaded onto a truck for transport, where the stumps are finely shredded at the heating plant.
- System 3 – Stumps are transported uncut to a terminal by truck, and then finely shredded there. This material is then transported to the heating plant by truck.
System 2 (shredding stumps at roadside) was the most cost effective system up to 84 km from the heating plant. System 1 was viable up to 22 km and System 3 only up to 9 km. The most important factor affecting system costs was the number of stumps per hectare. A 25% reduction in the number of stumps per hectare resulted in a 20 to 24% system cost increase. Large numbers of stumps per hectare are required to make stump harvesting profitable.
Source: http://www.forestpower.net/sivu.aspx?luokka_id=585&main=2