时间:2019-01-02 作者:英语课 分类:(科普英语)Earth and Sky


英语课



Fire Regime 火

Fire was a creation of life -- born from oxygen and organic matter -- ignited by lightning. Thus fire has been a fundamental feature of the Earth for at least 400 million years. A scientist talks about fire -- today on Earth and Sky.

JB: This is Earth and Sky, speaking with fire expert Steve Pyne, in the Biology and Society program at Arizona State University in Tempe.

Steve Pyne: Fire looks the way it does on Earth today because of what people have done and not done, the ways we've started fires, the ways we've stopped them, or tried to stop them, the ways we've moved fuel around. That is to say, we create fuel and can put in fire where it would not naturally occur or under different rhythms or patterns, what you would call regimes.

JB: The "fire regime" is a concept Dr. Pyne uses to describe the range of fire.

Steve Pyne: It describes the pattern of fire that appears on the land. So that it may refer to the typical frequency of the fire, the seasonal 1 timing 2 of the fires, the intensity 3 of the fires, the geographic 4 size of the fires. In other words, fire appears in particular ways. And if you look at the ways that it appears, then you can begin describing a fire regime in the same way you can think of a precipitation regime.... And individual fires appear within a regime much like individual storms do within a climate.

JB: More -- tomorrow. Our thanks today to the Bureau of Land Management and to the National Fish and Wildlife Foundation -- supporting the conservation of native fish, wildlife, plants and their habitats. I'm Joel Block for Earth and Sky.


adj.季节的,季节性的
  • The town relies on the seasonal tourist industry for jobs.这个城镇依靠季节性旅游业提供就业机会。
  • The hors d'oeuvre is seasonal vegetables.餐前小吃是应时蔬菜。
n.时间安排,时间选择
  • The timing of the meeting is not convenient.会议的时间安排不合适。
  • The timing of our statement is very opportune.我们发表声明选择的时机很恰当。
n.强烈,剧烈;强度;烈度
  • I didn't realize the intensity of people's feelings on this issue.我没有意识到这一问题能引起群情激奋。
  • The strike is growing in intensity.罢工日益加剧。
adj.地理学的,地理的
  • The city's success owes much to its geographic position. 这座城市的成功很大程度上归功于它的地理位置。 来自《简明英汉词典》
  • Environmental problems pay no heed to these geographic lines. 环境问题并不理会这些地理界限。 来自英汉非文学 - 环境法 - 环境法
学英语单词
abrenunciation
abridgedly
absolute measure of variation
advancing method
Aesculus sinensis Bge.
Alderdale
aluminium chloride
aminoderivatized
Arhiny
Asientos
bar spacing
bean stripe
Beth-haccerem
blotto
bounded electron
bowguards
braised chicken
by the scruff of the neck
Callicarpa pseudorubella
carzinocidin
chip detector
cigar lighter
completeness knock-down
complyingly
Comstock Park
critical viscous damping coefficient
declinings
dermatologies
development finance institution (dfi)
dictagymnin
digest of case
Distance Snob
early-bearing
emotion-driven
fatal low temperature
fimbo
finish-curl die
friendliest
genus Origanum
geometric axiom
Giraldes'organ
hand condenser
hennigs
hitler
hypsocephalous
joint communications instruction
kara
kerions
legal operation
Lincoln, Benjamin
merchandise policy
moulded figure
nebbed
neurotenin
OPER (operating)
ornithoteuthis volatilis
oval dent reed
pelculas
pinion shaft inside bearing
playing period
polymerizing agent
port level attribute
professional poisoning
proostracum
Provie
pull it
railway operation
Rotalipora
roundheaded window
salt marsh plant
satangs
Saussurea kansuensis
schools television
semimeridian
set piston
Severoural'sk
shuttlebuses
skip hoist type charging machine
special section wire
Spelling check
spherical diameter
spina bifidas
SPRC
spumed
systolic ejection click
Tangeli
taquito
TCPD
technique of least squares
tendcrizing enzyme
thermons
timbuctoos
tongue weld
torture chamber
two-phase locking protocol
uncertainty relationship
undervote
vagus group
welfare mentality
wustites
zinc-coated