时间:2019-01-02 作者:英语课 分类:60秒科学


英语课

Rainforests exist because it rains a lot and that makes the forests grow, right? Well, not so fast. What if it’s not the rain that makes the forests—what if it’s the forests that actually generate the rain? That’s the contention 1 of a paper in BioScience Magazine called How Forests Attract Rain.


The article discusses a mostly overlooked hypothesis that, if right, would explain how big rainforests—like the Amazon—actually drive the entire global water cycle.


Here’s the idea. Forests pull in large amounts of water vapor 2 from surrounding regions and from nearby bodies of water. As the vapor condenses into rain, the local atmospheric 3 pressure drops. Which sucks in more water vapor from outside the forest. Which repeats the process. Creating a positive feedback loop. The whole rainforest-water vapor system is called a biotic pump, because the living forest matter is what’s moving the water.


If proven, the biotic-pump hypothesis could explain how big rainforests far from oceans stay so moist. The info would help climate models. And highlight the potential dangers of deforesting large parts of the pump.


—Steve Mirsky


 



n.争论,争辩,论战;论点,主张
  • The pay increase is the key point of contention. 加薪是争论的焦点。
  • The real bone of contention,as you know,is money.你知道,争论的真正焦点是钱的问题。
n.蒸汽,雾气
  • The cold wind condenses vapor into rain.冷风使水蒸气凝结成雨。
  • This new machine sometimes transpires a lot of hot vapor.这部机器有时排出大量的热气。
adj.大气的,空气的;大气层的;大气所引起的
  • Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
  • Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。
标签: 60秒科学
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afterlength
air mount
alkyl compound
assurgencies
automatic interaction detection(aid)
babts
bearing seal
Berlin-Dahlem Botanical Garden and Botanical Museum
billisecond (nanosecond)
bow pencil
btb (bromthymol blue)
bufolo
carp oil
childlier
chiliasts
chromatophore of choroid
colletotrichum stephaniae
computer field service
computer-based telemetering system
Consent Solicitation
contextured
cotted fleece
cumulative quantity discounts
deliver newspapers
Delphinium weiningense
deselects
Deutsche Terminborse
differ from
disempowerments
divided conductor
Dizmiss
dredge stripping
duckmen
Duluth packs
envelope line system
estate corpus
excited-field
fixed image graphics
fixed scatter communication
formbuilding
fpuorophotometer
gluggy
graphitizing carbon
gray lung pneumonia
Guihaiothamnus
handling shift efficiency
hepatitis B antibody
high temperature connector
hot clean criticality
hydraulic tire chiselling machine
integrated transmission system
internal fixation of spine
internal grinding head
interpolative picture coding
knotwort
landform map
limenitis camillas
long-billeds
macrosalb
make payment
makisterone
malignant rhabdomyoma
manufacturing overhead efficiency variance
medicator
mixed cultivats
moweare
Moyenvic
natural hot-water reservoir
painted china
palynostratigraphy
passenger car tyres
perforation gauge
period-revolution
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pilot star
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Pleurococcus
potterton
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principal real right
radio-frequency
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RNAAPP
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scalping number
sea-lift
semiskilled labor
shipping label
side-by-side connecting rod
stringier
sum of money
theorem of intersecting chords
turbo jet
unevitable
uniform demand
us merchant marine
van reel
vehicle radio
Zanha
zeroize