Naturbrande/størrelse /hvor/returperioder

Er der nogen der har et bud ?

har man glemt/undladt at lave passende branbælter imllem de enkelte stykker af skove

There are two major ways to prevent fires from starting, experts say. The first is for officials to intentionally set fires to take away ignitable material like brush off the forest floor and give trees more space to breathe.
The other method, called forest thinning, involves crews removing small trees to reduce the amount of fuel in dry forests.

But these activities are expensive. And the U.S. currently faces a backlog of needed forest management projects, as federal and state agencies have used more of their budgets responding to wildfires, rather than preventing them...

Jørgen Petersen skrev:
Og tilsvarende her, hvor man skriver om - A human-driven decline in global burned area:

http://luc4c.eu/public_files/findings_and_downloads/publications/20170511_manuscript_Human%20driven%20decline.pdf

"A warmer world will have drier fuels," said Mike Flannigan, director of the Western Partnership for Wildland Fire Science at the University of Alberta in Canada. "Drier fuels will mean it's easier for fires to start and spread."
A study published last year in Proceedings of the National Academy of Sciences suggests that climate change has already played a significant role in making forests in the western U.S. drier and more likely to burn, nearly doubling the area affected by forest fires over the last three decades

At the same time, there's a great deal of scientific debate about the influence of climate change on droughts around the world. In some places, California included, some scientists have suggested that future climate change may lead to an increase in the frequency or intensity of droughts—but there's still considerable uncertainty about how these changes will unfold. In some places, climate projections predict an increase in both drought and extreme precipitation events, suggesting more intense rainfall punctuated by longer or drier periods in between.
What this would mean for fire seasons may still be unclear. But Flannigan suggests that an increase in heavy rainfall events may not be enough to offset the effects of steadily rising temperatures, especially if they're accompanied by an increase in dry periods.
"You only need a week of hot, dry, windy weather before you can have a raging inferno," he said. "You don't need very much time."

Det er også en kendsgerning, at det er let at forebygge skovbrande. Det gøres bl.a. ved at fælde de store træer, at fjerne gamle tørre og udgåede træstammer, at lave gode brandbælter imellem de enkelte stykker af skov, samt ved at sikre, at adgangsvejene til skovene er både åbne og i brugbar stand, således brandbiler med mere kan komme frem i tilfælde af brand

We do have a management problem on the state, federal level and local levels (in that order). This can be broken down into six key areas where we have failed: Access, logging, grazing, endangered species, water quality and air pollution

Scientists think that global warming may already be influencing fire seasons

Still, scientists are increasingly suggesting that climate change has already had a hand in shaping fire seasons, not just in California but elsewhere around the world, and will likely continue to play a major role....

kfl skrev:
Her er et link til en artikel fra Scientific American

Here's What We Know about Wildfires and Climate Change

Scientists think that global warming may already be influencing fire seasons

Still, scientists are increasingly suggesting that climate change has already had a hand in shaping fire seasons, not just in California but elsewhere around the world, and will likely continue to play a major role....

Peter Villadsen skrev:
https://www.iii.org/fact-statistic/facts-statistics-wildfires

Jørgen Petersen skrev:
En så kort årrække siger intet. Det er rent tilfældigt hvornår tabene rammer. Det er derimod den langsigtede udvikling, som er alt afgørende.