时间:2018-12-07 作者:英语课 分类:农业与发展


英语课

AGRICULTURE REPORT - Protecting the Nation's Forests
By Mario Ritter


Broadcast: Tuesday, November 15, 2005


I'm Steve Ember with the VOA Special English Agriculture Report.


The Forest Service is responsible for the forests on public lands in the United States. It supervises almost seventy-eight million hectares of forests, grasslands 2, rivers and lakes. It is an agency of the Department of Agriculture.


Forest Service officials say there are four major threats to forests and wild lands in America.


The first is the threat of fire and fuel. This year, forest fires have burned more than three million hectares of land. That is almost two times as much as the ten-year average.


Fires are a natural part of forest growth, but they can also threaten lives and property.



An airplane drops firefighting chemicals
Fuel is dead plant material and small plants that grow under tall trees. As much as forty-nine metric tons of fuel can build up on every hectare of forest floor.


The Forest Service estimates that up to one-fourth of the forests it supervises have dangerous levels of fuel. Sometimes foresters set controlled fires to remove the fuel. Other times the fuel must be cleared by hand.


Another threat to forests is from invasive species. These are non-native plants and animals that push out native kinds. They can cause a lot of economic damage. Some invaders 3 are insects like the Asian longhorn beetle 4. Some are diseases like white pine blister 5 rust 6. Others are plants like the fast-growing kudzu vine.


The Foreign Service has hundreds of experts who try to develop ways to deal with invasive species.


The agency says another threat to the health of wild lands is the loss of open space. It says over one hectare of forest or grassland 1 is lost to development every minute.


Development also leads to the division of large natural areas into smaller ones. Many animals need wide open spaces. Also, building near wild lands increases the risk to homes from forest fires.


The fourth threat to public lands is what the Forest Service calls unmanaged recreation. People can hunt, fish and camp in many national forests. But careless use of motor vehicles and other actions can be destructive.


On November second, the Forest Service released a new rule on the use of motor vehicles on public lands. The rule requires each national forest to identify roads and paths that are open to motor vehicles. Vehicles will be banned from other areas. The ban, however, will not affect snowmobiles.


This VOA Special English Agriculture Report was written by Mario Ritter.  I'm Steve Ember.



1 grassland
n.牧场,草地,草原
  • There is a reach of grassland in the distance.远处是连绵一片的草原。
  • The snowstorm swept the vast expanse of grassland.暴风雪袭击了辽阔的草原。
2 grasslands
n.草原,牧场( grassland的名词复数 )
  • Songs were heard ringing loud and clear over the grasslands. 草原上扬起清亮激越的歌声。 来自《现代汉英综合大词典》
  • Grasslands have been broken and planted to wheat. 草原已经开垦出来,种上了小麦。 来自《简明英汉词典》
3 invaders
入侵者,侵略者,侵入物( invader的名词复数 )
  • They prepared to repel the invaders. 他们准备赶走侵略军。
  • The family has traced its ancestry to the Norman invaders. 这个家族将自己的世系追溯到诺曼征服者。
4 beetle
n.甲虫,近视眼的人
  • A firefly is a type of beetle.萤火虫是一种甲虫。
  • He saw a shiny green beetle on a leaf.我看见树叶上有一只闪闪发光的绿色甲虫。
5 blister
n.水疱;(油漆等的)气泡;v.(使)起泡
  • I got a huge blister on my foot and I couldn't run any farther.我脚上长了一个大水泡,没办法继续跑。
  • I have a blister on my heel because my shoe is too tight.鞋子太紧了,我脚后跟起了个泡。
6 rust
n.锈;v.生锈;(脑子)衰退
  • She scraped the rust off the kitchen knife.她擦掉了菜刀上的锈。
  • The rain will rust the iron roof.雨水会使铁皮屋顶生锈。
学英语单词
adularia-celsian series
agricultural credit project
alameda
anacrotic wave
Assezat's triangle
at-bats
auto decrement addressing
automatic plate cutting
bbp
Bear Lake National Wildlife Refuge
berg till
bitter peptide
Black Legend
Blaxland's test
Boot density bottle
Both respirators
capeadors
Catharism
Codroipo
colony counter
congenital macular degeneration
contact oxidation method
Dalysep
demarkate
dentelation
doctor of business administration
edge guide
effect of steric hindrance
emu bush
falmonox
fast reverse
field activity
fire -detecting alarm
Fixmbr
floating prices
form watch
Grange-over-Sands
Harr condition
headmount
homostylous
hydraulic machinary
initiation of task
interest representation model
Jahānpur
liopropoma japonicum
Lithocarpus lycoperdon
man-made system
market firm
Medskog
micropower circuit
mierkat
Ndramé
nitrile latex
non spiritual
nonisolated essential singular point
opprobriously
otogenic facial paralysis
Paramera, Sa.dela
patagial muscle
paved area
peachblossom
pentosan polysulfate
point to
polar action
protocol
pseudochdinesterase
put one's foot into in one's mouth
radiation index
radiationcounter
Ramadier
reimbodying
respiratory insufficiency
roberston
rundles-falls(syndrome)
safe-guard door lock
say-cast
schizochroal
sclerenchymata
screencasting
Sedum pallescens
set up a claim to sth.
shortening melter
Shāh Kūh Bālā
single stage
sludge sampling
steel separation door
straightens out
subband signal
subsea flowline
swordflag
synchronizing characteristics
tac.
tear sth shreds
ThickWire
thuban
tile lintel floor
typhomalarial
usherage
vitreocapsulitis
wald's fundamental identity
wearies of
yellow brown