内容正文:
每日阅读打卡DAY6(选自The Conversation)
The West's iconic forests are increasingly struggling to recover from wildfires-
altering how fires bum could boost their chances
Wildfires and severe drought are killing trees at an alarming rate across the West,and
forests are struggling to recover as the planet warms.However,new research shows
there are ways to improve forests'chances of recovery-by altering how wildfires
burn.
In a new study,we teamed up with over 50 other fire ecologists to examine how
forests have recovered-or haven't-in over 10,000 locations after 334 wildfires.
Together,these sites offer an unprecedented look at how forests respond to wildfires
and global warming.
Our results are sobering.We found that conifer tree seedlings,such as Douglas-fir and
ponderosa pine,are increasingly stressed by high temperatures and dry conditions in
sites recovering from wildfires.In some sites,our team didn't find any seedlings at all.
That's worrying,because whether forests recover after a wildfire depends in large part
on whether new seedlings can establish themselves and grow.
However,our team also found that if wildfires burn less intensely,forests will have a
better shot at regrowing.Our study,published March 6,2023,highlights how
proactive efforts that modify how wildfires burn can help buffer seedlings from some
of the biggest stressors of global warming.
By studying both how severely wildfires burn-for example,how many trees are
killed-and how climate conditions after a wildfire affect new seedlings,our team
found a surprising and hopeful result.
Even when summers are hotter and drier after a wildfire than in the past,just having
trees around that survived a fire helps new seedlings establish and grow.
What is the main cause of trees struggling to recover in the West?
A)Flooding
B)Wildfires
C)Snowstorms
D)Heatwaves
Answer:B)Wildfires
How many locations were examined in the study mentioned in the article?
A)10
B)50
C)100
D)10,000
Answer:D)10,000
What type of seedlings