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
-just
17-hydroxycorticosteroid
40
absorbent papers
Actinidia polygama
alphanumeric characters
another story
aquileges
Armenophobes
bassen'd
basting brush
berberidaceaes
biennia
Brinell microscope
bung down
chewing insect
co2 incubation
computer simulation for dyeing process
Coogoon R.
Cuttack
definite proportion
dicranella rufescence (dicks.) schimp.
esse
evomitation
EWNP
exhalants
extruded aluminum
final-salary
friction gearing
general bill of lading
germon
grouping of population
hairspring type
helianthus laetifloruss
heterodimerises
high level efficiency
Home Bias
in a ratio of
jumping wheel jumper
keep one's eye upon
kind of work
kiss of life
labeled common block name
liquid penetration inspection
Lučani
m.c.
Machiavel
Malyy Yenisey
mammy wagon
matrix in block form
metaremarks
misrouteing
Mitomi
modal notation
modulo reduction
monniker
multicuspid teeth
national enquiry
olibene
optimal control equation
orbital branch
outsiderhood
overhead counter shaft
overmodulated
pantograph frame
penirolol
plant lectin
plate and tube condenser
plea to indictment
Porm
potassium octaborate
preachership
purpura of the newborn
resmelting
rockallia jongkuei
rustle ... up
sacred kingfisher
sand preparation plant
Sao Jorge do Limpopo
screamadelicas
secting
seppanen
series-parallel starter
shift register generator
shoal detector
social indicators movement
Spurway syndrome
stair turret
steady-state approximation
surface shape
tall gallberry hollies
temporal and spatial variation
tetraphenylborates
throat-paint
to snake
triethylammonium
Tussabid
usles
veggiedog
vestibular branches
yellow trefoil