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
To best protect threatened plants, inefficient national parks should be sold off and the proceeds used to buy more cost-effectiv
To best protect threatened plants, inefficient national parks should be sold off and the proceeds used to buy more cost-effectiv
admin
2013-08-12
31
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."
What does Richard Fuller regard as the most important factor when a protected site is established?
选项
A、Its economic value.
B、Its historic value.
C、Its bio-diversity value.
D、Its environmental value.
答案
C
解析
题目问,在设立保护区方面,Fuller认为什么才是最重要的因素。从第2段Fuller的话中我们知道,许多保护区的设立并不是以生物多样性的价值(not for their bio-divemity value)为前提,结果是导致自然保护区效率低下。就此推断,Fuller认为bio-diversity value比其他因素更重要,选C。
转载请注明原文地址:https://kaotiyun.com/show/CH97777K
0
大学英语六级
相关试题推荐
Mostworthwhilecareersrequiresomekindofspecializedtraining.Ideally,therefore,thechoiceofan【C1】______shouldbemade
A、Theolderanimalslookaftertheyoungerones.B、Theyoungeranimalslookaftertheolderones.C、Themothersteachtheirdaug
Aproblemmorespecifictoschoolsthemselvesispervasivestudentpassivity—alackofactiveparticipationinlearning.Thispr
A、Themanattendedtheconcertbutdidn’tlikeit.B、Themanwassorrytomissthefootballgame.C、Themanismoreinterestedi
Languageshavebeenchangedthroughtheages.Therearethousandsofspeechvarietiesintheworld.
Ithasbeennecessarytoreferrepeatedlytotheeffectsofthetwoworldwarsinpromotingallkindsofinnovation.Itshouldb
A、Turningherselfintoalegend.B、Collectingmoneyforthepoor.C、Doingbusinessandhelpingothers.D、Goingaboutresearchan
Peoplecouldeatmorecocoa-richproductssuchasdarkchocolatebutnotdrinkteaiftheywanttolowertheirbloodpressure,G
Thispassagegivesageneraldescriptionoftheadvantagesanddisadvantagesofahybridauto-mobile.Oneoftheadvantagesof
A、Hedoesn’tknowwhattoolstobring.B、Hedoesn’tmindhelpingthewoman.C、Thewomanwon’thavetocarrythetools.D、Thedon
随机试题
A.NADH脱氢酶B.丙酮酸脱氢酶C.苹果酸脱氢酶D.葡萄糖-6-磷酸酶
A.血行转移B.直接蔓延C.淋巴转移D.种植性转移E.胃肠道管腔内转移直肠癌转移到肝是
糖尿病血糖浓度的诊断标准为
门静脉高压症最危险的并发症是
评价心脏功能最常用的检查方法是()
一存活多年的同种异体肾移植接受者的体内虽有供体Ⅲ人抗原表达却未发生明显的排斥反应,其原因可能是
一些自然科学家没有学习马克思主义哲学也能在科学上取得伟大成就,是由于他们()。
刑讯逼供罪是指司法工作人员对犯罪嫌疑人、被告人使用肉刑或者变相肉刑,逼取口供的行为。根据定义,下列不构成刑讯逼供罪的是()。
Directions:Inthispart,youaretowritewithin30minutesacompositionofnolessthan150wordsaboutMyHopeforWhatChin
共享单车是指企业在校园站点、公交站点、居民区、商业区、公共服务区等提供自行车共享服务,是一种分时租赁模式。共享单车是一种新型环保共享经济。共享单车的实质是一种新型的交通工具租赁业务——自行车租赁业务,其主要载体为自行车,可以充分利用城市因快速的经济发展而带
最新回复
(
0
)