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
Protecting just 42 sites across Asia, ranging from temperate forests to tropical grasslands, could be key to the survival of one
Protecting just 42 sites across Asia, ranging from temperate forests to tropical grasslands, could be key to the survival of one
admin
2013-07-20
48
问题
Protecting just 42 sites across Asia, ranging from temperate forests to tropical grasslands, could be key to the survival of one of the world’s most symbolic and feared, wild cats—the tiger.
That radical proposal, published online in the journal Public Library of Science-. Biology, represents a scaling-back of ambition and what one of the paper’s authors calls "ruthless priority setting". "It’s forcing hard decisions," said Simon Stuart, co-author of the paper, who chairs the species survival commission at the International Union for Conservation of Nature. For animals that are worth considerable sums, he added, "there’s no way you can protect them across an entire landscape, because the costs are too high".
John Robinson, executive vice president for conservation and science at the Wildlife Conservation Society, said researchers experienced "a real shock" when they determined what was needed to keep the species going. The majority of about 1 000 breeding females are found in India, Russia and Indonesia. None remain in Cambodia, China, DPRK and Vietnam. "Unless we protect those core populations, within a few short years we could lose tigers altogether," said Robinson, another of the paper’s co-authors.
Over the past couple of decades, environmentalists have focused on preserving large, ecologically rich landscapes to ensure that a wide range of plant and animal species can thrive over the long term. But for a number of highly endangered species, scientists now say, governments and nonprofit organizations must target their efforts more narrowly if they want to ensure that these populations remain viable.
In the case of the tiger, three factors—habitat loss, the overhunting of its prey and poaching (偷猎)— have caused its number to drop from more than 10 000 in the 1980s to fewer than 3 500 today. It is said that tiger parts are so prized in Eastern medicine that a dead one can sell for $ 1 500 to $ 3 500 before its eyes are sold as a cure for some complicated diseases and are converted into a soup for the body, and its bones are ground into powder to treat some diseases like typhoid (伤寒). Researchers have determined that tigers occupy less than 7 percent of their historic range. In addition to poaching, Asia’s rapid economic development—including road and dam construction—has eroded tiger habitat.
Robinson and others advocate a two-step process that focuses on monitoring and protecting tigers in the 42 source sites and a longer-term effort to preserve the large landscapes tigers need to hunt and wander.
Apart from protecting 42 source sites, researchers advocate a longer-term effort to preserve the large landscapes tigers need to______.
选项
答案
hunt and wander
解析
细节辨认题。本题考查研究者为保护老虎提出的解决办法。文章最后指出,Robinson等人倡导一项两步走的计划,重点放在监测和保护42处老虎生存地区,并做出长期的努力来保护老虎觅食和漫步所需的大片区域。根据原文可得出答案。
转载请注明原文地址:https://kaotiyun.com/show/bKn7777K
0
大学英语六级
相关试题推荐
Theproblemissocomplicated______(花了我们两周时间才解决).
A、Radiationfromtheterminal.B、Stressinworkinghours.C、Withoutadequateeye-drops.D、Lessorlittlemoistureintheeyes.D
HealthHealthcouldbedefinedtheoreticallyintermsofcertainmeasuredvalues;forexample,apersonhavingnormalbodyt
Withoutthehelpofthewarm-heartedlady,______(他就不会从车祸中幸存).
OnDecember25,2000,manypeopleacrossNorthAmericareceivedarareChristmastreatwhenthemoonpassedinfrontofthesun
OnDecember25,2000,manypeopleacrossNorthAmericareceivedarareChristmastreatwhenthemoonpassedinfrontofthesun
OnDecember25,2000,manypeopleacrossNorthAmericareceivedarareChristmastreatwhenthemoonpassedinfrontofthesun
Thegovernmenthas______(高度重视由抑制的人口持续增长所引起的各种问题).
Theyputontheirheadphones,drapeahoodovertheirheadanddriftoffintotheworldof"digitalhighs."VideospostedonYou
TheactofGooglingoneselfhasbecomethedigitalage’spremiereguiltypleasure—anactivityenjoyedbyallandadmittedbyfew
随机试题
简述醋酸西曲瑞克的临床应用、不良反应及禁忌证。
根据《行政处罚法》的规定,下列关于行政拘留的说法正确的是()。
患者,男性,50岁。既往体健,查体时发现肝右肋下2cm,质硬、无压痛,脾可触及。锌浊度试验20单位,ALT正常范围,肝穿刺活检病理有假小叶形成,应诊断为
苯巴比妥急性中毒时为加速其从肾脏排泄,应采取的主要措施是( )。
根据《执业药师资格制度暂行规定》,执业药师的职责包括
应考虑诊断为下列哪种疾病,最佳治疗应选下列哪一组:
投资决策服务需要解决的问题主要集中在项目的()。
学校中曾被记过的学生因表现好而被撤销了记过,这种做法是()。
WestLondon,Fridaynight,9pm.IntheRedemptionbar,musichumsandcandlesflicker.Abarmanshakescocktailsunderaneons
DearMr.Suzuki,ThegoodswereceivedonJuly15werefoundnottomatchourorder.ThegoodsweorderedwereItemNo.2345
最新回复
(
0
)