Full text of this article is only available in PDF format.

Markku Larjavaara (email), Timo Kuuluvainen, Heidi Tanskanen, Ari Venäläinen

Variation in forest fire ignition probability in Finland

Larjavaara M., Kuuluvainen T., Tanskanen H., Venäläinen A. (2004). Variation in forest fire ignition probability in Finland. Silva Fennica vol. 38 no. 3 article id 414. https://doi.org/10.14214/sf.414

Abstract

We examined climate-caused spatio-temporal variation of forest fire ignition probability in Finland based on empirical ignition experiments and 37 years of meteorological data from 26 meteorological stations scattered across Finland. First, meteorological data was used in order to estimate the variation in forest fuel moisture content with the model of the Finnish forest fire risk index. Second, based on data from empirical ignition experiments, fuel moisture content was linked with forest fire ignition probability. In southern Finland average forest fire ignition probability typically peaks in late May and early June, whereas in the northern part of the country the peak occurs at the end of June. There was a three-fold difference in the average annual ignition probability between the north-eastern part (3%) and south-western part of the country (9%). The observed differences in fire ignition probability suggest that the characteristics of the natural fire regime also vary considerably in the southern versus the northern part of the country.

Keywords
ignition; forest fuel moisture; forest fire; fire regime

Author Info
  • Larjavaara, University of Helsinki, Dept of Forest Ecology, FI-00014 University of Helsinki, Finland E-mail markku.larjavaara@helsinki.fi (email)
  • Kuuluvainen, University of Helsinki, Dept of Forest Ecology, FI-00014 University of Helsinki, Finland E-mail tk@nn.fi
  • Tanskanen, University of Helsinki, Dept of Forest Ecology, FI-00014 University of Helsinki, Finland E-mail ht@nn.fi
  • Venäläinen, University of Helsinki, Dept of Forest Ecology, FI-00014 University of Helsinki, Finland E-mail av@nn.fi

Received 21 July 2003 Accepted 4 June 2004 Published 31 December 2004

Views 3678

Available at https://doi.org/10.14214/sf.414 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Kuuluvainen T., Leinonen K. et al. (1996) Statistical opportunities for comparing stand st.. Silva Fennica vol. 30 no. 2–3 article id 5598
Hokkanen T. J., Järvinen E. et al. (1995) Properties of top soil and the relationship betw.. Silva Fennica vol. 29 no. 3 article id 5556
Kuuluvainen T., (1989) Branching dynamics in young Scots pine. Silva Fennica vol. 23 no. 3 article id 5385
Kuuluvainen T., Pukkala T. (1989) Effect of Scots pine seed trees on the density o.. Silva Fennica vol. 23 no. 2 article id 5379
Kuuluvainen T., Kanninen M. et al. (1988) Tree architecture in young Scots pine: propertie.. Silva Fennica vol. 22 no. 2 article id 5347
Pukkala T., Kuuluvainen T. (1987) Effect of canopy structure on the diurnal interc.. Silva Fennica vol. 21 no. 3 article id 5316
Kreutz A., Aakala T. et al. (2015) Spatial tree community structure in three stands.. Silva Fennica vol. 49 no. 2 article id 1279
Grenfell R., Aakala T. et al. (2011) Microsite occupancy and the spatial structure of.. Silva Fennica vol. 45 no. 5 article id 89
Ylläsjärvi I., Berglund H. et al. (2011) Relationships between wood-inhabiting fungal spe.. Silva Fennica vol. 45 no. 5 article id 83
Lännenpää A., Aakala T. et al. (2008) Tree mortality agents in pristine Norway spruce .. Silva Fennica vol. 42 no. 2 article id 468
Lilja-Rothsten S., Chantal M. d. et al. (2008) Microsites before and after restoration in manag.. Silva Fennica vol. 42 no. 2 article id 250
Lilja S., Kuuluvainen T. (2005) Structure of old Pinus sylvestris dominated fore.. Silva Fennica vol. 39 no. 3 article id 377
Larjavaara M., Kuuluvainen T. et al. (2004) Variation in forest fire ignition probability in.. Silva Fennica vol. 38 no. 3 article id 414
Wallenius T., Kuuluvainen T. et al. (2002) Spatial tree age structure and fire history in t.. Silva Fennica vol. 36 no. 1 article id 557
Kuuluvainen T., Mäki J. et al. (2002) Tree age distributions in old-growth forest site.. Silva Fennica vol. 36 no. 1 article id 556
Karjalainen L., Kuuluvainen T. (2002) Amount and diversity of coarse woody debris with.. Silva Fennica vol. 36 no. 1 article id 555
Rouvinen S., Kuuluvainen T. et al. (2002) Tree mortality in a Pinus sylvestris dominated b.. Silva Fennica vol. 36 no. 1 article id 554
Brumelis G., Jonsson B. G. et al. (2011) Forest naturalness in northern Europe: perspecti.. Silva Fennica vol. 45 no. 5 article id 446
Kuuluvainen T., Aakala T. (2011) Natural forest dynamics in boreal Fennoscandia: .. Silva Fennica vol. 45 no. 5 article id 73
Shorohova E., Kneeshaw D. et al. (2011) Variability and dynamics of old-growth forests i.. Silva Fennica vol. 45 no. 5 article id 72
Kuuluvainen T., (2002) Natural variability of forests as a reference fo.. Silva Fennica vol. 36 no. 1 article id 552
Kuuluvainen T., Aapala K. et al. (2002) Principles of ecological restoration of boreal f.. Silva Fennica vol. 36 no. 1 article id 572
Jonsson B. G., Kouki J. et al. (2011) Northern Primeval Forests – Ecology, Conservatio.. Silva Fennica vol. 45 no. 5 article id 445
Kuuluvainen T., (2002) Introduction. Disturbance dynamics in boreal for.. Silva Fennica vol. 36 no. 1 article id 547