By Matt Ridley. Excerpts:
"wildfires are getting less frequent worldwide, not more, as the globe warms. The acreage burned has decreased steadily since 2000, according to NASA’s satellites, and is thought to have almost halved in a century. The great fires of 1871 in Wisconsin and Michigan burned more than a million hectares long before anybody drove a car"
"this year is an unusually quiet year for wildfire: so quiet it is breaking records for lack of fires by this date, even in Europe. If you don’t believe me, check the figures produced by the Global Wildfire Information System: as of last week, the world had seen 106 million hectares burn this year, the lowest at this date since these records began in 2012. In Europe, just 3.6 million hectares have burned—less than half the average for this date."
"It has been known for many decades that in fire-prone habitats, the longer you go without a fire, the worse the fires will be. So preventing the build-up of tinder by controlled burns is the most important factor."
Here in Britain the government has consistently and relentlessly demanded less ‘cool’ burning—low-intensity, controlled fires—in winter on heather moorland, Britain’s most fire-prone habitat. Such fires have been used by farmers and gamekeepers for generations to create a mosaic of short and long heather. This encourages fresh young heather shoots for sheep and grouse to feed on and makes open areas for rare birds such as golden plover and curlew to nest in. If done in winter it can burn off the rank heather plants while leaving the moss underneath barely touched, as demonstrated by a famous video in which a gamekeeper places a Mars bar in the moss, lights a fierce fire over it, then picks up the unscorched, unmelted chocolate bar, unwraps it and eats it.
Natural England argues that regular cool burning harms the habitat; researchers at York University and elsewhere argue the opposite: that it encourages the growth of sphagnum moss and other species by letting light in. But both sides agree that regular cool burns can dramatically reduce the risk of much more damaging wildfires, which burn down through the moss layer and into the peat. Cutting heather instead is less effective but better than nothing. Yet Natural England has banned heather burning on deep peat altogether and is pushing hard to limit it further everywhere—or at least tie it up in complicated licensing rules. As a result, the fuel load on heather moorland has been increasing; in places the heather is now waist-deep. The National Fire Chiefs Council warned last year that such restrictions on heather management would increase ‘the danger to firefighters and the public’."
"The authorities know their policies increase the fire risks. Here is what the Cairngorm National Park says in its Integrated Wildfire Management Plan about plans to increase shrubs and other vegetation by reducing deer and stopping burning: ‘These habitats will take many years to develop and during the intervening period fuel loads will increase, as will the corresponding need for fire risk mitigation.’ So they knew the risk was increasing. But little was done. John Kirk, a board member of the Cairngorms National Park Authority, told the Strathspey Herald: ‘Everyone is furious… the entire Abernethy forest has no firebreaks.’"