首页
登录
职称英语
To best protect threatened plants, inefficient national parks should be sold
To best protect threatened plants, inefficient national parks should be sold
游客
2024-04-26
54
管理
问题
To best protect threatened plants, inefficient national parks should be sold off and the proceeds used to buy more cost-effective ones. So says Richard Fuller at the University of Queensland in St. Lucia, Australia, who reckons that replacing 1 per cent of Australia’s protected areas could significantly increase the number of vegetation types being protected.
Worldwide, there are 100,000 regions dedicated to bio-diversity maintenance, covering 12 per cent of countries’ land and territorial waters. "Historically, a lot of these areas were designated because we couldn’t use them for economic or agriculture purposes, not for their bio-diversity value," says Fuller. "Consequently, many species and habitats remain inadequately protected." For example, up to 83 per cent of threatened plants are found outside protected areas.
Fuller says environmentalists who try only to increase the number of protected sites are effectively "adding to an inefficient system". Instead, he says, governments should sell off expensive land of low conservation value and buy new sites instead.
Fuller’s team has developed a mathematical model to test their theory in Australia. The group divided the country’s landmass(国土)into around 65,000 sections before assigning each a "conservation value" based on the rarity of the vegetation type within it: higher values were given to areas where more native vegetation has been lost. They then divided each section’s conservation value by its financial value, enabling them to rank currently protected areas in terms of cost-effectiveness. In the model, the least cost-effective areas were sold off and the funds used to buy more cost-effective sites.
For a vegetation type to be considered as "protected" in the team’s model, 15 per cent of the land area it covered must lie in protected areas. Currently, only 18 out of 60 Australian vegetation types are protected by this measure. Replacing just 1 per cent of the least cost-effective areas boosted the number to 54. "We get an enormous increase in efficiency without spending more money," says Fuller.
"It’s a logical approach with obvious benefits for protected bio-diversity," says Jon Nevill, an environmental consultant in Hampton, Victoria, Australia. "But I have no confidence that governments could effectively manage such a difficult programme." Martin Taylor, a protected areas policy manager at environmental campaign group WWF-Australia, is less complimentary. He says the idea of "trading off protected areas to buy theoretically better ones" is "quite horrifying". Sacrificing a protected area based solely on vegetation types without consideration of native animals or local geography is troublesome, he says. "No area can be written off so lightly as these authors do."
Fuller defends his approach, saying the study is just a demonstration. "If this idea was to be put into practice you would need to consider these other values." [br] What could be achieved by replacing just 1 per cent of the least cost-effective areas in Australia?
选项
A、The number of protected sites would increase to 54.
B、The protected vegetation types would increase to 54.
C、The land area covered by protected sites would increase by 54%.
D、The cost-effectiveness of protected areas would increase by 54%.
答案
B
解析
根据题干中的replacing just 1 per cent of the least cost-effective areas可以快速定位到第5段第3句。解题关键在于弄清the number指的是什么的数量。答案在上一句找。该段第2句说到,澳大利亚60种植被中只有18种得到了保护,因此可以判断这里的the number指的是受保护植物的数目。因此排除A,选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3571843.html
相关试题推荐
Tobestprotectthreatenedplants,inefficientnationalparksshouldbesold
Tobestprotectthreatenedplants,inefficientnationalparksshouldbesold
Tobestprotectthreatenedplants,inefficientnationalparksshouldbesold
TheEnglishnationalcharacterisdualistic:Oneaspectisconservative,the
TheEnglishnationalcharacterisdualistic:Oneaspectisconservative,the
TheEnglishnationalcharacterisdualistic:Oneaspectisconservative,the
Somestudentsarenotadequatelypreparedforcollege.Shouldweturnthema
Somestudentsarenotadequatelypreparedforcollege.Shouldweturnthema
Somestudentsarenotadequatelypreparedforcollege.Shouldweturnthema
Somestudentsarenotadequatelypreparedforcollege.Shouldweturnthema
随机试题
Whichofthefollowingstatementsistrueaccordingtowhatyouhear?[br][ori
Weighingtoomuchcandamageone’shealth,andobesityisagrowingproblem
关于债券收益率,以下叙述正确的是()。A.不同种类发行人发行的债券之间收益率的
肝气犯胃型胃痛治宜A.柴胡疏肝散加减 B.清中汤加减 C.四君子汤
财政政策的“内在稳定器”作用可以通过政府税收的自动变化实现。当经济繁荣时,失业率
社会工作者介入司法过程自司法判决前的案件审理阶段就已经开始,其主要工作对象包括(
某单位年初无偿为甲村建设一个光伏发电站,每年发电2.5万千瓦时,每千瓦时收益为1
2021年3月12日,《中华人民共和国国民经济和社会发展第十四个五年规划和
对项目计算期相同而原始投资不同的两个互斥投资项目进行决策时,适宜单独采用的方法是
下列属于资金业务前台交易操作风险的有()。A.交易员未及时止损,未授权交易或超
最新回复
(
0
)