| 单词 | crown fire |
| 例句 | They compete for water and their low branches allow fire to climb into the canopy of taller trees, fueling devastating crown fires. Fire, other ravages jeopardize California’s prized forests 2023-10-25T04:00:00Z A history of logging and fire-suppression policies has also resulted in stands of unnaturally young, dense timber that is more susceptible to fast-moving crown fires, according to experts. California's extreme wildfires taking lethal toll on elderly who can't escape flames 2022-08-26T04:00:00Z White firs have needles running up their trunks that serve as ladders up to the canopy, creating crown fires that are the hardest to contain and most deadly for trees. Why Does the American West Have So Many Wildfires? 2022-08-01T04:00:00Z There flames have overtaken conifers killed by drought and bark beetle infestations causing crown fires, where the blaze burns through the top layer of foliage on a tree. Firefighters face punishing weather conditions in battle against raging fire near Yosemite 2022-07-24T04:00:00Z The dry, dead trees have grown flammable, helping turn lower-intensity surface fires into more damaging crown fires, the researchers said. California forests are vanishing as wildfires burn larger and more intensely 2022-07-20T04:00:00Z “These smaller diameter trees are ‘ladder fuels’ that push fire into the canopy,” it says, “and can push fire into the tops of trees and promote crown fires.” Yosemite undergoes forest-thinning project due to wildfire risk; environmentalists want it stopped 2022-06-14T04:00:00Z The combination of dry brush and dense timber whipped the conflagration into a high-severity crown fire, in which flames run across the treetops, gaining speed and spitting out embers. Greenville was destroyed by wildfire. Can it be rebuilt to survive the next one? 2022-05-30T04:00:00Z Firefighters are seeing more and more “extreme fire behavior” — whirling “fire tornadoes,” crown fires that spew embers into the wind and blazes that move so fast and burn so hot they create their own weather. Underpaid firefighters, overstretched budgets: The U.S. isn’t prepared for fires fueled by climate change 2021-07-01T04:00:00Z Surface fires tend to be less devastating and easier to control, according to Kulakowski, compared to crown fires. Wildfires tear through Colorado’s beetle-bitten forests 2020-10-27T04:00:00Z Not far from this burn scar, the Dixie fire destroyed the town of Greenville when flames erupted into an uncontrollable crown fire, which can gain speed as it spreads from treetop to treetop. California forests are vanishing as wildfires burn larger and more intensely 2022-07-20T04:00:00Z If we restore variation in tree density and reduce surface fuel, we can reduce the chance that dry forests burn in raging crown fires of the sort we’re seeing this year. Perspective | Trump has a point: The fires are worse because we managed the forests badly. 2020-09-18T04:00:00Z “It’s either going to be a high severity crown fire or it’s not going to burn at all,” Collins said. 30 years after the 1988 Yellowstone fires 2018-09-05T04:00:00Z Underbrush - what foresters call “ladder fuels” - now chokes the forests, turning what could have been beneficial fires into the “crown fires” that destroy hundreds of thousands of acres. Editorials from around Oregon 2018-08-22T04:00:00Z It was a crown fire, meaning it burned ferociously to the very tips of the pines, sending flames hundreds of feet into the air, the blaze itself leaping from crown to crown of the trees. Firefighting blamed for 'megafires' ravaging US forests - BBC News 2016-12-29T05:00:00Z Mike Flannigan, a professor who studies wildland fire at the Edmonton’s University of Alberta, described the fire as a crown fire, which occurs when the tops of conifers carry the flames through the canopy. 'Nothing short of terrifying': Alberta wildfires grow eight times in size 2016-05-05T04:00:00Z There were more crown fires in dry forests, and the problem grew significantly worse over the next three decades. Perspective | Trump has a point: The fires are worse because we managed the forests badly. 2020-09-18T04:00:00Z The scientists have just simulated a “crown fire”, in which flames leap from treetop to treetop, a spectacle firefighters dread. Welcome to the fire lab: California researchers re-create forest blazes 2015-11-08T05:00:00Z And chaparral cover can burn with the intensity of a crown fire, thanks to the resinous content of its leaves. Wildfires Come Hard and Fast to Southern California 2014-05-16T04:00:00Z "We started seeing these fires and something was wrong. These crown fires just ate up the landscape very quickly." Firefighting blamed for 'megafires' ravaging US forests - BBC News 2016-12-29T05:00:00Z "Ground fire is a good thing, crown fire is a bad thing in his case," said fire incident spokesman Dennis Godfrey. Wildfire grows to California's fourth largest as crews make progress 2013-09-02T00:29:25Z While these “crown fires” are normal for some forests, such as the lodgepole pine forests in Yellowstone National Park, dry forest species are not adapted to this type of event. Perspective | Trump has a point: The fires are worse because we managed the forests badly. 2020-09-18T04:00:00Z From tree-ring analyses, he knows that even small bare patches left by crown fires in the nineteenth century have not returned to forest, so he holds little hope for the intensely burned patch from 2002. Forest fires: Burn out 2012-09-19T17:21:21.097Z “It was equally as intense as a normal crown fire but happened under moderate conditions.” Green Blog: Are Dead Trees More Combustible Than Live Ones? 2011-10-21T19:17:24Z One of the most remarkable features of these "crown fires," is the rapidity with which they travel. Wood and Forest 2011-03-01T03:00:42.647Z If it gets through Pogey Notch it means a crown fire in the black growth.” King Spruce, A Novel 2011-01-15T03:00:34.400Z He also said the potential for a crown fire briefly increases in the early stages of a beetle epidemic, when the forest is a mixture of dying, dead and living trees. Study: Beetle invasions dampen, not intensify, wildfire risk 2010-10-16T19:17:00Z The brush was not so bad, now; but the brush does not figure much in a forest fire when the flames leap from tree-top to tree-top and make a crown fire. Pluck on the Long Trail Boy Scouts in the Rockies “And crown fires happen faster than expected” in these largely dead forests, he added. Green Blog: Are Dead Trees More Combustible Than Live Ones? 2011-10-21T19:17:24Z The conversion of these into green young growth, too dense for fern and salal and destructible only by the hottest crown fires, is the best protection he can give mature timber surrounded by them. Practical Forestry in the Pacific Northwest Protecting Existing Forests and Growing New Ones, from the Standpoint of the Public and That of the Lumberman, with an Outline of Technical Methods The blaze lashed eagerly over the tops of the trees, the dreaded crown fire of the North Woods. The Hidden Places This was hot enough to be a crown fire, if a breeze helped it. Pluck on the Long Trail Boy Scouts in the Rockies It wasn't a crown fire, where the flames travel through the tops of the timber; it traveled along the ground, and climbed the low trees and then reached for the big ones. Pluck on the Long Trail Boy Scouts in the Rockies Even under the moderate fire conditions of this past summer, he said, blazes in forests with lots of dead needle-less trees turned into crown fires, which is sobering. Green Blog: Are Dead Trees More Combustible Than Live Ones? 2011-10-21T19:17:24Z A bad wind had sprung up, and we didn't know but that we were to have a crown fire. Pluck on the Long Trail Boy Scouts in the Rockies The duty of Scouts is to jump upon a surface fire and kill it before it becomes a sly ground fire or a raving crown fire. Pluck on the Long Trail Boy Scouts in the Rockies |
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