Identifying the main drivers for the production and maturation of Scots pine tracheids along a temperature gradient

Research output: Contribution to journalArticleScientificpeer-review


  • Liisa Kulmala
  • Jesse Read
  • Pekka Nöjd
  • Cyrille B K Rathgeber
  • Henri E. Cuny
  • Jaakko Hollmén
  • Harri Mäkinen

Research units

  • University of Helsinki
  • Luke Natural Resources Institute Finland
  • Swiss Federal Institute for Forest, Snow and Landscape Research
  • Telecom ParisTech
  • AgroParisTech


Even though studies monitoring the phenology and seasonal dynamics of the wood formation have accumulated for several conifer species across the Northern Hemisphere, the environmental control of tracheid production and differentiation is still fragmentary. With microcore and environmental data from six stands in Finland and France, we built auto-calibrated data-driven black box models for analyzing the most important factors controlling the tracheid production and maturation in Scots pine stem. In the best models, estimation was accurate to within a fraction of a tracheid per week. We compared the relative results of models built using different predictors, and found that the rate of tracheid production was partly regular but current and previous air temperature had influence on the sites in the middle of the temperature range and photosynthetic production in the coldest ones. The rate of mature cell production was more difficult to relate to the predictors but recent photosynthetic production was included in all successful models.


Original languageEnglish
Pages (from-to)210-224
Number of pages15
JournalAgricultural and Forest Meteorology
Publication statusPublished - 15 Jan 2017
MoE publication typeA1 Journal article-refereed

    Research areas

  • Black box modeling, Diameter growth, Gross primary production, Micro-core measurements, Predictive models, Xylogenesis

ID: 7205872