A comment is provided on recent papers published in some major scientific journals, dealing with the problem of the increasing frequency of fires in boreal regions. Climatic causes and ecological consequences, in terms of ecosystem competition and forest carbon balance, are discussed....
Forest fires are usually viewed within the context of a single fire season, in which weather conditions and fuel supply can combine to create conditions favourable for fire ignition—usually by lightning or human activity—and spread1,2,3. But some fires exhibit ‘overwintering’ behaviour, in ...
E. Development and structure of the Canadian Forest Fire Weather Index System, vol. 35 (Canadian Forest Service, 1987). de Groot, W. J., Pritchard, J. M. & Lynham, T. J. Forest floor fuel consumption and carbon emissions in Canadian boreal forest fires. Can. J. Res. 39, 367–382...
“We found that wildfire could initiate the conversion of approximately 50 per cent of the current boreal forest into grassland or deciduous open forest,” said Diana Stralberg, who did the research as part of her PhD in the biological sciences department at the University of Alberta. “If...
(1992). Climate change and boreal forest fires in Fennoscandia and Central Canada. In M. Boer & E. Koster (eds.), Greenhouse-impact on cold-... SUFFLING - - 被引量: 22发表: 1992年 Predicted changes in fire weather suggest increases in lightning fire initiation and future area burned ...
The boreal forest in North America owes much of its floristic and faunistic diversity to periodic fires ignited by lightning and by man since he appeared on the scene. The indirect evidences of buring in vegetation and soils, and recent direct observations of fires, are reviewed. Fire is shown...
7 of 15 D18307 HYER ET AL.: FOREST FIRE SMOKE INJECTION HEIGHT D18307 Figure 5. Effect of MOPITT averaging kernels on simulated CO from surface sources in June 2000. (a) Estimated CO emissions from boreal forest fires in June 2000, aggregated to the scale of the CTM. Values are shown ...
The boreal forest is susceptible to fire, insects and disease, which in Canada destroys or disrupts 1% of the total boreal forest each year. Trees do regrow however. Because of the fires there are not many regions in Canada where boreal forest is older than 100 years. There are a few sta...
FOREST firesBIOMASS burningFIRE managementMERCURYSMOKINGFOREST biomassFIREMercury (Hg) emitted from biomass burning is an important source of the contaminant to the atmosphere and an integral component of the global Hg biogeochemical cycle. In 2018, measurements of gaseous elemental Hg ...
Decreasing frequency of forest fires in the southern boreal zone of Québec and its relation to global warming since the end of the 'Little Ice Age' Although an increasing frequency of forest fires has been suggested as a consequence of global warming, there are no empirical data that have ...