Sammanfattning

In an attempt to quantitatively evaluate the natural versus anthropogenic signal in site fire histories, the statistical relationship between dendrochronologically dated fire events and tree-ring chronologies (deemed to be an independent proxy for climate variation) was analyzed for 14 sites in a 2600-km(2) area of pine-dominated forests in the Komi Republic (East European Russia) over the period from 1424 to 1954. We developed a cumulative measure of statistical fit between two types of fire events (early- and late-season fires) and ring-width chronologies of Scots pine (Pinus sylvestris L.) (total ring- and latewood-width chronologies). For a given site, the statistical fit between fires and tree-ring data tended to decrease with an increasing proportion of unique fire years. Distance from a site to the nearest village (deemed to be a proxy of human impact) explained 50% of the variation in statistical fit between fires and tree-ring data. The fit decreased in the majority of the sites from the earlier (1424-1700) to the later (1700-1960) periods. We interpret this to be a result of increased human impact on the fire regime since 1700 due to intensified colonization of the area.

Publicerad i

Canadian Journal of Forest Research
2004, Volym: 34, nummer: 10, sidor: 2027-2036
Utgivare: CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS

SLU författare

• Niklasson, Mats

  • Institutionen för sydsvensk skogsvetenskap, Sveriges lantbruksuniversitet
    

• Angelstam, Per

  • Institutionen för naturvårdsbiologi, Sveriges lantbruksuniversitet
    

Associerade SLU-program

Klimat


UKÄ forskningsämne

Ekologi
Skogsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1139/X04-081

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/42426