Heiskanen, Juha

D.Sc. (Agr. & For.), Researcher

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Expertise

• soil and growth media research: soil physics
• forest regeneration
• container media in tree seedling production (esp. sphagnum peat)
• afforested agricultural fields
• forest soils
• site preparation

Research Projects

Current

• Forest hydrology and environmental responses of trees
  
• Machine planting: seedling production and field performance of seedlings
  
• Natural regeneration of forests
  
• The effect of soil preparation and fertilisation on forest soil and tree stand
  

Former

• Adaptability of birches to global climate change
  
• Adaptability of silver birch (Betula pendula Roth) to global warming and changing water regime in future climate
  
• Afforestation of cut-away peatlands and peat fields
  
• BioSoil, Soil, Level I, Part II
  
• Biology and technology of nursery production
  
• Classification of forest soils in northern Finland
  
• Developing methods for afforestation of (former agricultural) fields
  
• Early growt of native tree species on northern Finnish tills
  
• Effects of long-term ozone fumigations on vegetation Exposure pattern, nutritional status, genetic variation and life strategy in relation to critical levels.
  
• Field afforestation in EU-Finland
  
• Forest regeneration in the special conditions of northern Finland
  
• Genetic gain and genetic diversity in improved forest regeneration material
  
• Impact of climate change on C and N transformations in organic soils
  
• Long-term monitoring of forest ecosystems
  
• Nursery production and planting chain
  
• Quality chain of forest regeneration from seed production to early tending
  
• Seedling production and nursery hygienie
  
• The alternatives of the forest regeneration methods and their ecological and social sustainability in Northern Finland
  

Contacts

Keywords: forest regeneration, forest soils, growing media, nursery production, site preparation, soil physics, substrates