2024年4月4日发(作者：卯年)
野火的原因英文版
Wildfires can burn millions of acres of land at an alarming
rate,devouring everything along the speed of these
rolling flames is as high as 14 miles per hour,which translates
to a speed of 4 minutes per mile,and can surpass the average
person in a few minutes.
Take the United States as an example:over the past two
decades,the damage caused by wildfires in the United States has
increased 2000,an average of 72400
wildfires have burned 7 million acres of land in the United
States each year,twice the area burned by wildfires in the
2015,the largest wildfire season in American history
burned more than 10 million acres of land.
Due to global warming,the climate will become hotter and
drier,so the risk of wildfire is generally expected to
the same time,with the increase of global population,many
people still live in rural and wilderness areas,and more houses
and other buildings may be put in 's why it's
important for us to learn how wildfires start,how to stop
them,and what to do when they happen.
How did the wildfire start
Although they are listed as natural disasters by the
Environmental Protection Bureau,only 10%to 15%of wildfires
occur r 85%to 90%are caused by human
factors,including unattended campfires and ruins
fires,discarded cigarette ends and arson.
Naturally occurring wildfires can be triggered in dry
weather and this case,usually green plants can be
converted into dry and flammable winds will
quickly spread the fire,and high temperatures will promote
combustion.
Whether it is a natural or man-made fire,wildfire
combustion must meet three conditions:fuel,oxygen and heat
ghters call these three elements the fire
triangle.
Fuel is any flammable substance around the heat
source,including trees,grass,shrubs,and even
greater the fuel load in an area,the more intense the fire may
be.
Air provides the oxygen needed for the burning of
wildfires.
The heat source helps to ignite the wildfire and bring the
fuel to a temperature sufficient to ing,burning
campfires or cigarettes,and even the sun can provide enough
heat to ignite wildfires.
With the intensification of global warming,fierce high
temperature,dry weather and frequent thunderstorms have
created mature conditions for res occur in
most parts of the world.
How to stop them
Firefighters extinguish the fire by one or more basic
principles of fire fighting triangle.A traditional method is
to extinguish existing fires with water and spray flame
ghters sometimes form a team to clear the
vegetation around the fire site to control the fire and
eventually make it lack of resulting large area of land
is called a fire belt.
Firefighters can also use controlled combustion to
generate backfires to prevent the
bushes,garbage and all combustibles in the forest,so that the
originally raging wildfire will lose fuel.
Benefits of wildfire
Although wildfires are dangerous to human beings,naturally
occurring wildfires play an indispensable role in
burning the dead or rotten materials,the originally trapped
nutrients can be returned to the can also play the role
of disinfection and remove diseased plants and harmful insects
from the ecosystem.
The wildfire thins the forest canopy and bushes,and allows
the sun to shine on the forest floor,enabling the new generation
of seedlings to fact,some kinds of trees,such as
redwoods,rely on fire to germinate their seeds.
What should we do in a wildfire
After a wildfire occurs,it will destroy everything in their
burning example,in 2018,the most destructive
California wildfire in history killed 85 people,which was the
single natural disaster with the heaviest loss in the world that
year,with a loss of more than US$16 gh it is
difficult to stop them,many measures can be taken before,during
and after wildfires to limit their damage.
2024年4月4日发(作者：卯年)
野火的原因英文版
Wildfires can burn millions of acres of land at an alarming
rate,devouring everything along the speed of these
rolling flames is as high as 14 miles per hour,which translates
to a speed of 4 minutes per mile,and can surpass the average
person in a few minutes.
Take the United States as an example:over the past two
decades,the damage caused by wildfires in the United States has
increased 2000,an average of 72400
wildfires have burned 7 million acres of land in the United
States each year,twice the area burned by wildfires in the
2015,the largest wildfire season in American history
burned more than 10 million acres of land.
Due to global warming,the climate will become hotter and
drier,so the risk of wildfire is generally expected to
the same time,with the increase of global population,many
people still live in rural and wilderness areas,and more houses
and other buildings may be put in 's why it's
important for us to learn how wildfires start,how to stop
them,and what to do when they happen.
How did the wildfire start
Although they are listed as natural disasters by the
Environmental Protection Bureau,only 10%to 15%of wildfires
occur r 85%to 90%are caused by human
factors,including unattended campfires and ruins
fires,discarded cigarette ends and arson.
Naturally occurring wildfires can be triggered in dry
weather and this case,usually green plants can be
converted into dry and flammable winds will
quickly spread the fire,and high temperatures will promote
combustion.
Whether it is a natural or man-made fire,wildfire
combustion must meet three conditions:fuel,oxygen and heat
ghters call these three elements the fire
triangle.
Fuel is any flammable substance around the heat
source,including trees,grass,shrubs,and even
greater the fuel load in an area,the more intense the fire may
be.
Air provides the oxygen needed for the burning of
wildfires.
The heat source helps to ignite the wildfire and bring the
fuel to a temperature sufficient to ing,burning
campfires or cigarettes,and even the sun can provide enough
heat to ignite wildfires.
With the intensification of global warming,fierce high
temperature,dry weather and frequent thunderstorms have
created mature conditions for res occur in
most parts of the world.
How to stop them
Firefighters extinguish the fire by one or more basic
principles of fire fighting triangle.A traditional method is
to extinguish existing fires with water and spray flame
ghters sometimes form a team to clear the
vegetation around the fire site to control the fire and
eventually make it lack of resulting large area of land
is called a fire belt.
Firefighters can also use controlled combustion to
generate backfires to prevent the
bushes,garbage and all combustibles in the forest,so that the
originally raging wildfire will lose fuel.
Benefits of wildfire
Although wildfires are dangerous to human beings,naturally
occurring wildfires play an indispensable role in
burning the dead or rotten materials,the originally trapped
nutrients can be returned to the can also play the role
of disinfection and remove diseased plants and harmful insects
from the ecosystem.
The wildfire thins the forest canopy and bushes,and allows
the sun to shine on the forest floor,enabling the new generation
of seedlings to fact,some kinds of trees,such as
redwoods,rely on fire to germinate their seeds.
What should we do in a wildfire
After a wildfire occurs,it will destroy everything in their
burning example,in 2018,the most destructive
California wildfire in history killed 85 people,which was the
single natural disaster with the heaviest loss in the world that
year,with a loss of more than US$16 gh it is
difficult to stop them,many measures can be taken before,during
and after wildfires to limit their damage.