Juha Laitila
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View article: Availability and procurement cost analysis of fresh Norway spruce (Picea abies) logging residue chips and needles from regeneration fellings to biorefining in Finland
Availability and procurement cost analysis of fresh Norway spruce (Picea abies) logging residue chips and needles from regeneration fellings to biorefining in Finland Open
View article: Evaluation of the productivity and costs of excavator-based mechanized tree planting in Finland based on automated data collection
Evaluation of the productivity and costs of excavator-based mechanized tree planting in Finland based on automated data collection Open
The poor cost-effectiveness of mechanized planting (MECP) is the main reason for the low mechanization rate of planting. In this study, we investigated the productivity of the mechanized excavator-based planting of Norway spruce (Picea abi…
View article: Koneellisen metsänistutuksen tuottavuuden ja kustannusten selvittäminen hyödyntäen automaattista tiedonkeruuta
Koneellisen metsänistutuksen tuottavuuden ja kustannusten selvittäminen hyödyntäen automaattista tiedonkeruuta Open
View article: Harvesting of Continuous Cover Forests
Harvesting of Continuous Cover Forests Open
View article: Evaluation of the productivity and costs of excavator-based mechanized tree planting in Finland based on automated data collection
Evaluation of the productivity and costs of excavator-based mechanized tree planting in Finland based on automated data collection Open
The poor cost-effectiveness of mechanized planting (MECP) is the main reason for the low mechanization rate of planting. In this study, we investigated the productivity of the mechanized excavator-based planting of Norway spruce (Picea abi…
View article: The effects of the EU’s forest-related policies on harvesting costs in Finland
The effects of the EU’s forest-related policies on harvesting costs in Finland Open
The EU’s influence on national forest policies is growing, and the implementation of forest-related policies proposed by the Commission will affect the practice of forestry in Europe. For instance, the Nature Restoration Law sets concrete …
View article: Seedling damage caused by wood harvesting and soil scarification in rotation and continuous cover forestry in Scots-pine-dominated boreal forests
Seedling damage caused by wood harvesting and soil scarification in rotation and continuous cover forestry in Scots-pine-dominated boreal forests Open
Continuous cover forestry (CCF) is gaining popularity as an alternative to rotation forest management (RFM), especially in forests with multiple uses. The success of CCF depends on the amount and quality of remaining seedlings, but the eff…
View article: Pre-Feasibility Study of Carbon Sequestration Potential of Land Clearing Stumps Buried Underground
Pre-Feasibility Study of Carbon Sequestration Potential of Land Clearing Stumps Buried Underground Open
Stump harvesting for energy has decreased in Finland, and many heat and power plants no longer accept stumps in their fuel portfolio due to fuel quality problems. However Finland is a forested country, and land clearing stumps need to be e…
View article: The productivity and cost of harvesting whole trees from early thinnings with a felling head designed for continuous cutting and accumulation
The productivity and cost of harvesting whole trees from early thinnings with a felling head designed for continuous cutting and accumulation Open
The main problem with the utilization of untended stands for energy use is that small-diameter trees are expensive to harvest, and the value of the harvest fails to exceed the harvesting cost. Until now, the equation has appeared difficult…
View article: The Impact of Fleet Size, Harvesting Site Reserve, and Timing of Machine Relocations on the Performance Indicators of Mechanized CTL Harvesting in Finland
The Impact of Fleet Size, Harvesting Site Reserve, and Timing of Machine Relocations on the Performance Indicators of Mechanized CTL Harvesting in Finland Open
Upscaling an operation typically results in economies of scale, i.e., cost advantages in business, especially when the production unit’s utilization rate can be improved. According to economic studies of mechanized timber harvesting, large…
View article: Metsähakkeen riittävyys energiaturpeen korvaajana Pohjois-Karjalassa
Metsähakkeen riittävyys energiaturpeen korvaajana Pohjois-Karjalassa Open
View article: Productivity and cost of harvesting overgrowth brushwood from roadsides and field edges
Productivity and cost of harvesting overgrowth brushwood from roadsides and field edges Open
Formulae display:?Mathematical formulae have been encoded as MathML and are displayed in this HTML version using MathJax in order to improve their display. Uncheck the box to turn MathJax off. This feature requires Javascript. Click on a f…
View article: Metsätuholain arvioinnin jatkoselvitys : Kuorellisen puutavaran poiskuljetus ja männiköiden kantokäsittely turvemailla
Metsätuholain arvioinnin jatkoselvitys : Kuorellisen puutavaran poiskuljetus ja männiköiden kantokäsittely turvemailla Open
Luonnonvarakeskus arvioi metsälain ja metsätuholain muutosten vaikutuksia laajasti vuonna 2019 (Kniivilä ym. 2020). Nyt käsissä olevan maa- ja metsätalousministeriön rahoittaman jatkoselvityksen tavoitteena oli vastata aiemmassa arvioinnis…
View article: Workability and Well-Being at Work Among Cut-To-Length Forest Machine Operators
Workability and Well-Being at Work Among Cut-To-Length Forest Machine Operators Open
This study assessed the situation of Finnish cut-to-length (CTL) machine operators’ work well-being with workability index (WAI), investigated CTL machine operators’ lifestyle habits, and collected operators’ good practices to maintain and…
View article: Roundwood and Biomass Logistics in Finland and Sweden
Roundwood and Biomass Logistics in Finland and Sweden Open
Logistics of roundwood and biomass comprise a high number of operations, machinery, storage sites and transportable roundwood and biomass assortments. Moreover, complex and highly varying operational environment through the year poses logi…
View article: Productivity of harvesting and clearing of brushwood alongside forest roads
Productivity of harvesting and clearing of brushwood alongside forest roads Open
Expertise in the cost-efficient utilization and treatment of brushwood on forest roadside sites is limited. In the present study, the productivity of brushwood clearing and harvesting on forest roadside sites was defined by creating time-c…
View article: The effect of winter weather on timber truck tare weights
The effect of winter weather on timber truck tare weights Open
In wintertime, the payload capacity of a timber truck is reduced by snow that accumulates on the structures of the truck. The aim of this study was to quantify the potential payload loss due to snow and winter accessories and to predict th…
View article: Joining up optimisation of wood supply chains with forest management: a case study of North Karelia in Finland
Joining up optimisation of wood supply chains with forest management: a case study of North Karelia in Finland Open
This paper presents a spatially explicit methodology for integrated forest management and wood supply chain optimization over time in the context of a Finnish forest strategy anticipating new investments and renewal of business in the wood…
View article: Selection of a chipper technology for small-scale operations - a Finnish case
Selection of a chipper technology for small-scale operations - a Finnish case Open
The objective of this study was to determine the economic performance of alternative chipper choices for small-scale chipping based on unit cost (€ per chip-m3) and net present value (NPV) calculations. For the chipping cost and investment…
View article: Rankahakkeen keinokuivaus : Metsähakkeen keinokuivauksen vaikutus hankintaketjun kannattavuuteen – hankkeen loppuraportti
Rankahakkeen keinokuivaus : Metsähakkeen keinokuivauksen vaikutus hankintaketjun kannattavuuteen – hankkeen loppuraportti Open
Energiapuun matka metsästä haketuksen kautta lämpölaitoksen kattilaan kestää useita kuukausia. Eniten aikaa kuluu energiapuun kuivaamiseen ja puskurivarastointiin tienvarressa. Pitkä varastointi ei pelkästään sido pääomia, vaan aiheuttaa p…
View article: Supplementary material to "Projected decrease in wintertime bearing capacity on different forest and soil types in Finland under a warming climate"
Supplementary material to "Projected decrease in wintertime bearing capacity on different forest and soil types in Finland under a warming climate" Open
View article: Alternative operation models for using a feed‐in terminal as a part of the forest chip supply system for a <scp>CHP</scp> plant
Alternative operation models for using a feed‐in terminal as a part of the forest chip supply system for a <span>CHP</span> plant Open
The fuel supply of forest chips has to adapt to the annual fluctuations of power and heat generation. This creates inefficiency and unbalances the capacity utilization of the fuel supply fleet in the direct fuel supplies from roadside stor…
View article: Esitutkimus rankahakkeen keinokuivaukseen perustuvan hankintaketjun kustannuskilpailukyvystä
Esitutkimus rankahakkeen keinokuivaukseen perustuvan hankintaketjun kustannuskilpailukyvystä Open
Seloste artikkelista: Laitila J., Ahtikoski A., Repola J., Routa J. (2017). Pre-feasibility study of supply systems based on artificial drying of delimbed stem forest chips. Silva Fennica vol. 51 no. 4 article id 5659. https://doi.org/10.1…
View article: Pre-feasibility study of supply systems based on artificial drying of delimbed stem forest chips
Pre-feasibility study of supply systems based on artificial drying of delimbed stem forest chips Open
This study was aimed at determining the maximum cost level of artificial drying required for cost-efficient operation. This was done using a system analysis approach, in which the harvesting potential and procurement cost of alternative fu…
View article: Käytettyjen puutavara-autojen ja -nostureiden jälleenmyyntiarvo sekä ominaisuudet Euroopan eri osissa
Käytettyjen puutavara-autojen ja -nostureiden jälleenmyyntiarvo sekä ominaisuudet Euroopan eri osissa Open
Euroopassa pääosa puutavaran kaukokuljetuksesta tehdään erityisesti sitä käyttötarkoitusta varten suunnitelluilla ja rakennetuilla puutavara-autoilla ja perävaunuilla, joiden ominaisuudet vaihtelevat maittain ja alueittain. Vaikuttavia tek…
View article: Procurement costs of cereal straw and forest chips for biorefining in South-East Finland
Procurement costs of cereal straw and forest chips for biorefining in South-East Finland Open
In Finland the increasing use of biofuel in transport presupposes a search for new raw material sources for biorefining. The aim of this study was, at the regional level, to compare the procurement costs of logging residues, stumps, delimb…
View article: A GIS-Based Methodology to Estimate the Regional Balance of Potential and Demand of Forest Chips
A GIS-Based Methodology to Estimate the Regional Balance of Potential and Demand of Forest Chips Open
Finland’s national aim for annual consumption of forest chips is 25 terawatt hours (TWh) (equivalent to 13.5 million solid cubic metres) in combined heat and power (CHP) production and heat production in 2020. On average, the techno-econom…
View article: Biojalostusta varten hankitun oljen ja metsähakkeen hankintakustannukset Kaakkois-Suomessa
Biojalostusta varten hankitun oljen ja metsähakkeen hankintakustannukset Kaakkois-Suomessa Open
View article: First-thinning harvesting alternatives for industrial or energy purposes based on regional Scots pine stand simulations in Finland
First-thinning harvesting alternatives for industrial or energy purposes based on regional Scots pine stand simulations in Finland Open
Combining research into forest management stand conditions and wood supply chain processes has been missing from earlier forestry studies. There is a clear need to develop more cost-efficient small-diameter wood production, harvesting and …
View article: Vihreä biotalous : 100-vuotiaan Suomen hyvinvoinnin ja kilpailukyvyn perusta
Vihreä biotalous : 100-vuotiaan Suomen hyvinvoinnin ja kilpailukyvyn perusta Open