首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
According to a study published this week in the journal Ecology Letters, the quantity of birds in Europe has declined by more th
According to a study published this week in the journal Ecology Letters, the quantity of birds in Europe has declined by more th
admin
2015-08-26
35
问题
According to a study published this week in the journal Ecology Letters, the quantity of birds in Europe has declined by more than 20 percent in the past 30 years. While there were over 2.1 billion European birds in 1980, there are now around 1. 6 billion, says study co-author Rich Inger, an ecologist at the University of Exeter in the United Kingdom.
Most of the decline—or 90 percent—is accounted for by a shrinking population in the 36 most common species, Inger tells Newsweek. For example, throughout the continent there are now 62 percent fewer house sparrows(a common species also found in North America)than there were when Margaret Thatcher became prime minister, a decline of about 150 million animals, he says. There were also drops in the numbers of such common species as skylarks(云雀), grey partridges(灰色鹧鸪)and starlings(椋鸟).
The decline is likely due in part to habitat loss and pesticide use. The amount of land used for agriculture in Europe has greatly increased since 1980, and there are fewer places for birds to nest and find food, Inger says. At the same time, pesticide use has gone up, knocking down the number of "pests" like insects that birds prey upon, he adds. "We don’t manage the environment in a way that’s good for birds," Inger says.
The study looked at an immense amount of data collected by thousands of "citizen scientists" over 30 years in most countries in Europe, in "an insightful departure from conventional approaches to reviewing bird monitoring data," said Michael Wunder, an ornithologist(鸟类学家)at the University of Colorado-Denver who wasn’t involved in the study. Wunder says the study clearly shows that " population sizes are most strongly affected by land use patterns" like farming. The measures used to protect rare species, like restrictions on hunting in certain areas, are not enough to prevent a decline in common birds, he adds.
If we want to protect birds in general, we need to change farming practices to provide more non-crop-laden land for birds, Inger says. Reducing pesticides would also help, as research has shown that areas with high pesticide use have fewer birds. "What we can do is start more environmentally friendly farming," Inger says. "We can leave wider margins on fields, get farmers to look after hedgerows(灌木篱墙), put up more bird boxes and provide places for birds to nest. "
What is the influence of more pesticide use on birds?
选项
A、There is no place for birds to nest.
B、There is less food for birds.
C、Birds are poisoned and die out.
D、The eggs of birds can’t be hatched.
答案
B
解析
细节题。由题干中的more pesticide use定位至第三段第三句。该句指出,使用杀虫剂的增多使虫子的数量变少,鸟类靠捕食虫子为生,因此,鸟类的食物来源就得不到保障,故[B]为答案。
转载请注明原文地址:https://kaotiyun.com/show/skXK777K
0
专业英语四级
相关试题推荐
Whatisthenewestproblemfacingpeoplewhodrivetoschool?
Whatisthenewestproblemfacingpeoplewhodrivetoschool?
Accordingtothepassage,beforetheagreementwasannouncedMonday,thetwosideshadbeenbargainingfor______days.
Thesepeopleoncehadfameandfortune;now______islefttothemisutterpoverty.
Atthebeginningofthepassage,theauthorindicatesthat_____.Accordingtothepassage,thelocalpeoplehaveallthefoll
Whatisthefirstthingthatpeopleoughttodoinfaceofpollution,accordingtotheauthor?
Whatisthefirstthingthatpeopleoughttodoinfaceofpollution,accordingtotheauthor?
ThestrivingofcountriesinCentralEuropetoentertheEuropeanUnionmayofferanunprecedentedchancetothecontinent’sGyp
Whichcountriessponsoredthemeasure?
Sincewearesocialbeings,thequalityofourlivesdependsinlargemeasureonourinterpersonalrelationships.Onestrengtho
随机试题
注册会计师为了证明以下财务报表项目的相关认定,如果采用函证程序,则获取的审计证据最相关的是()。
患者咳嗽,气喘,口渴欲饮,皮肤蒸热,日晡尤甚,舌红苔黄,脉细数。治宜
PDCA循环具有()特点。GB/T19000-2000族标准质量管理的系统方法包括()。
下列说法中不正确的有()。
“备案号”栏应填()。“装货港”栏应填()。
达瓦孜是()喜闻乐见的娱乐表演项目。
邓小平指出:“改革是中国的第二次革命”。我国社会主义改革作为一场新的革命,性质是()。
高楼大厦的拔地升天,正在把我们的天空挤压和分割得狭窄__________,正在使四季在隔热玻璃外变得__________不清,正在使田野和鸟语变得十分__________和遥远。填入画横线部分最恰当的一项是:
Itisunfortunatethatthemembersofthecommitteedonot______inopinion.
DoWeNeedCitiesAnyMore?Idon’twanttoliveinacity.Perhapswedividenaturallyintotwotypes:thoseforwhomcit
最新回复
(
0
)