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
2024-03-09
28
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."
选项
答案
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3517824.html
相关试题推荐
[originaltext]Todaywe’lltalkaboutnationalparksintheUnitedStates.
A、Artisseparatefromtechnicalskills.B、Artshouldbeenjoyedbyeverybody.C
A、Thenumberofprotectedsiteswouldincreaseto54.B、Theprotectedvegetation
I此处需要名词作get的宾语。根据后文onhowtoprotectthemselves“关于如何保护自己”,可知正确答案为tips“提示。技巧”。
A、Cookedmeatproductsaresafetoeat.B、Peopleshouldeatlesspopularprepare
A、Helearnsproblemsshouldbesolvedwithviolence.B、Heknowsthepainisnatu
A、Theyshouldbecarefullyavoided.B、Theyarejustlikethestore-boughtskelet
[originaltext]Shouldgirlsgotoschoolonlywithothergirls?Isitbetter
[originaltext]IndependenceDayisthenationalholidayoftheUnitedStates
[originaltext]IndependenceDayisthenationalholidayoftheUnitedStates
随机试题
[originaltext]Today,I’dliketotalkabouthowsittingforalongtimewill
[originaltext]W:Hey,Jake,riseandshine.M:Whattimeisit,Sheila?Ihave
Reynold五联征:
治疗惊风抽搐,无论寒热虚实皆可选用的药物是A.羚羊角 B.天麻 C.钩藤
根据下列资料回答问题。 2010年,我国进出口贸易总额为29727.6亿美元
A.当C=C0时,电路的功率因数最大 B.当C<C0时,cosφ’>cosφ
下列说法中,正确的是( )。A.大赦既赦其刑,又赦其罪B.特赦只赦其刑
下列关于个人存款业务的描述错误的是()。A.个人存款又称储蓄存款,是银行对存款
现代预算管理制度的核心内容有()。A.预算编制科学完整 B.预算执行规范有效
某建设工程于5月21日进行了图纸会审,并形成了图纸会审纪要,各参加单位签字盖章。
最新回复
(
0
)