Paul Hessburg: Why wildfires have gotten worse -- and what we can do about it
保羅海斯柏格: 為什麼野火的狀況更糟了?我們要如何阻止?
Paul Hessburg studies very large forest landscapes and what makes them tick. Full bio
Double-click the English transcript below to play the video.
of western forests have burned
is actually why my family and I live here.
我的家人會住在這裡的原因。
about what we're leaving behind
than the state of Oregon has burned
have been destroyed.
have steadily increased
和被摧毀的家園數目
than 100,000 acres --
we've managed this western landscape
是我們過去 150 年來,
that we are currently seeing
studying these western landscapes,
研究這些西部地景,
of our fire-management habits,
管理大火的一些習慣,
of our beloved forests.
甚至我們孩子的一生中,
some tough truths about wildfires,
關於野火的棘手真相了,
to learn to better live with them
和它們共處得更好一些,
to talk to you about today.
of 100 or 150 years ago.
或 150 年前的森林。
were taken in the 1930s
拍攝了數千個全景照片,
mountaintop lookouts,
these forests of old is "patchy."
最好的詞就是「拼湊成的」。
was this constantly evolving patchwork
是不斷演化的拼湊之作,
canopy forests of all ages,
冠層森林拼湊而成,
by today's standards.
大部份的火災規模都算很小。
that this landscape was open,
of the open forest
shaping this historical patchwork:
形成這個歷史上的拼湊物,
whether a place faces north or south
or in a valley bottom;
gets a lot of snow and rain,
shaped the way fire behaved
between the patterns and the processes.
and fairly far apart.
and when they occurred,
and fires were less frequent,
比較不常發生大火,
they were quite a bit more severe.
通常會比較嚴重一些。
the environments that they grew in
they all worked together
通通作用在一起,
across the landscape.
不讓它們在地景上擴散。
of fire across the landscape.
helped the rest of the forest
lived on this landscape,
and to thin certain forests
and the bison that they hunted.
fires of summer.
much later, in the mid-1800s,
於十九世紀中期開始殖民,
grazing was in high gear.
the cattle and the sheep ate the grasses
for the historical fires,
from thinning out trees
and they acted as potent firebreaks,
它們成了非常有效的防火道,
across this landscape.
which caused a sudden pivot
of the state of Connecticut.
to western Montana,
一路延伸到蒙大拿州的西邊,
three million acres,
and it killed 87 people.
became public enemy number one,
成了全民的頭號公敵,
that we would think about wildfire
just five years young at the time,
of putting out all wildfires
ability to put fires out,
it was now fire suppression
shaper of our forests.
got going in the west,
the large and the old trees.
of centuries of wildfires.
small trees filled in the gaps,
with trees so layered and close together
by roads and railroads,
and logging, removing the big trees,
伐木和砍掉大樹,
the current epidemic of trees.
地景能夠支持的量。
looked like 100 years ago and today,
sculptured by mostly small
所塑成的拼湊之作
so close together,
tree sizes and ages
from acre to acre,
一英畝延燒到下一英畝,
and insect outbreaks,
也一樣容易傳播,
on the forest floor,
are getting hotter
40 to 80 days longer each year.
climatologists are predicting
變為兩倍或三倍。
in the middle of this.
of all new housing starts are being built
the power of the patchwork.
the severity of many of our future fires.
許多未來火災的嚴重程度。
that we have tools
to intentionally thin out trees
reduce them and keep them reduced.
並保持它們於少量。
patches on the landscape
已經燒光的區塊,
with some of these treatments
和這類處理方式結合,
some of these treatments,
is that prescribed burning produces
regulated under air quality rules
in the summers
持續吸入來自超級大火的煙。
to get this changed.
of the patchwork.
and climate explanations,
and it will take us humans to solve it.
需要我們人類來解決。
are not well-supported.
並沒有受到很好的支持。
to magically go away
神奇地自己熄滅掉,
with them, don't we?
without lots of fire and lots of smoke.
多場火災和很多的煙。
make it our high priority
the current situation,
continued losses to megafires.
超級大火造成的損失。
to our lawmakers,
管制大火和森林的人。
are burned black?
ABOUT THE SPEAKER
Paul Hessburg - Research ecologistPaul Hessburg studies very large forest landscapes and what makes them tick.
Why you should listen
Paul Hessburg is a research ecologist who builds models of historical and modern era conditions in large forests and studies what factors make them behave as they do. In fact, much of his research is trying to decipher what is normal. In his research, Hessburg wants to know how the forests we inherited worked before we changed them. What did "natural" look like, and what specifically did we change about naturalness? What's still working well, and what could use a hand down?
Hessburg has spent most of his adult life (35 years) in his dream job. He works for the USDA, Forest Service, at the Pacific Northwest Research Station, where he is stationed at a field laboratory in Wenatchee, WA, US. That's located about five blocks just east of heaven, he says. He has a doctorate in Forest Pathology from Oregon State University, and he has been working in forestry for 40 years. He's also an Affiliate Professor at the University of Washington, Seattle, USA.
In 2017, Hessburg was awarded his Research Station's Distinguished Scientist Award, and he will be awarded his Agencies' Distinguished Scientist Award for 2017, in February of 2018.
Over the last two years, Paul has traveled and spoken to over 100 western US communities about the new era of megafires and what we can do about it. As he says, "Unless we change a few of our forest and fire management habits in the US, we will lose many more beloved forests; some won’t recover in our lifetime."
Paul Hessburg | Speaker | TED.com