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
考研
The rate of deforestation in the Brazilian Amazon has plummeted by 77% in the past seven years, but annual carbon emissions asso
The rate of deforestation in the Brazilian Amazon has plummeted by 77% in the past seven years, but annual carbon emissions asso
admin
2016-01-29
11
问题
The rate of deforestation in the Brazilian Amazon has plummeted by 77% in the past seven years, but annual carbon emissions associated with deforestation have not fallen nearly as much, says a Brazilian study that combines satellite data and biomass maps to model the change.【F1】
The difference is in large part due to a natural lag as carbon stocks slowly decay and make their way into the atmosphere as carbon dioxide.
Brazil has long had a sophisticated satellite-based system for monitoring deforestation, but translating forest clearance into emissions has remained a challenge. The picture is more complex than often assumed. The area cleared each year decreased from 27 ,772 square kilometers in 2004 to 6,418 square kilometres in 2011. A direct conversion of that lost biomass into carbon would suggest a drop in annual carbon dioxide emissions from more than 1. 1 billion tonnes of CO
2
in 2004 to 298 million tonnes of CO
2
—a reduction of nearly 74% .
【F2】
But numbers calculated by Brazil’s National Institute for Space Research(INPE)in Sao Jose dos Campos using the new model, and released on 13 August, suggest a reduction of only 57% in actual emissions.
The difference dues to factors such as the time it takes for roots to decay, and the fact that forest debris cut in one year might be burned in another. A paper describing the model was published last week.
【F3】
" We don’t know how the government is going to use this information at this point, but what we are trying to express is that this is a more correct way to understand carbon emissions," says Jean Ometto, a researcher at INPE who helped to develop the system.
He estimates that efforts to forestall deforestation in the Amazon have lowered Brazil’s overall carbon emissions by roughly 17% since 2004.
The model is a milepost for scientists and policy-makers working at the intersection of forestry, agriculture and global warming.【F4】
Many scientists are busy linking satellite measurements to field and aerial studies to create more accurate maps of forest biomass, which can then be used to calculate emissions.
INPE’s new model carries that work forward, allowing Brazilian scientists to provide annual estimates of both deforestation and carbon emissions, and setting the stage for a deeper analysis of the impacts of logging, agriculture and forest regrowth.
Richard Houghton, a forestry expert at the Woods Hole Research Center in Falmouth, Massachusetts , says that the actual results are not necessarily surprising.【F5】
But he credits INPE with developing a solid emissions model that will help Brazil build on its forest-monitoring system and tackle emissions in a serious way.
"That’s where you’d like the rest of the world to be, where Brazil is. "
【F3】
选项
答案
“在这一点上,我们不知道政府将怎样利用这个信息,但是我们试图阐释的是,这是一个了解碳排放的更加正确的途径,”曾帮助研发该系统的国家空间研究院研究员吉恩·欧姆特说道。
解析
这是一个复合句。直接引语部分是由but连接的两个并列句,前一个句子主语为We,谓语为don’t know,how引导的句子作宾语;后一个句子主语为what we are trying to ex—press,谓语是is,that引导的从句作表语。a researcher at INPE who helped to develop the system作Jean Ometto的同位语。
转载请注明原文地址:https://kaotiyun.com/show/SusZ777K
0
考研英语一
相关试题推荐
Duringthepast34years,wagesforeveryoneatorbelowthe30thpercentileoftheincomedistributionhaveessentiallybeenfl
Whataretheroadsnottakenbecausestudentsmusttakeoutloansforcollege?Foronething,itappearsthatpeoplewithstuden
Whataretheroadsnottakenbecausestudentsmusttakeoutloansforcollege?Foronething,itappearsthatpeoplewithstuden
Thatsomepeoplemakeweirdassociationsbetweenthesenseshasbeenacknowledgedforoveracentury.Theconditionhasevenbee
FiguringoutifmillionsofAmericanworkersareatriskfromon-the-jobexposuretohazardouschemicalshaslongbeenathorny
Let’sbefrank:collegecanbetough.Accordingtoa2007studybytheAmericanCollegeHealthAssociation,43percentofstuden
DoesWallStreetowethepeopleofAmericaanapology?ThatwasSenatorSherrodBrown’ssuggestiontoBenBernankeandHankPaul
AcrossthewesternUnitedStatesalone,trout(akindoffish)fishinggenerateshundredsofmillionsofdollarsannually.Buttro
Inthesummer,whenthesunplayedonthejuniperbushes,andinthefall,whentheairwasclearenoughtoseetothewhitelig
Whatdoconsumersreallywant?That’saquestionmarketresearcherswouldlovetoanswer.Butsincepeopledon’talwayssaywhat
随机试题
棘间韧带损伤多发生于
男性,20岁,重物自头顶砸下,枕颈部疼痛,旋转明显受限,四肢活动自如。
下列哪些内容是衡量医院护理人力资源管理职能的评价指标()
A.平面角,弧度B.压力,帕C.体积,升D.质量,千克E.长度,厘米我国法定计量单位中,属于国际单位制的基本单位是
下列疾病中由血小板数量或功能的异常引起的出血性疾病是()
被宣告缓刑的犯罪分子,在缓刑考验期限内具有下列情形之一的,应当撤销缓刑,前罪和后罪实行数罪并罚()。
______这本著作中提出了“教学相长”的教育原理。
××省人民政府关于调整全省最低工资标准的通知×府发[2012]×号各市(州)人民政府,省政府各部门、各直属机构:省人民政府决定对全省现行月最低工资标准和非全日制用工小时最低工资标准进行调整。一、
数据库系统在其内部具有3级模式,用来描述数据库中全体数据的全局逻辑结构和特性的是
A、Fillintheapplicationform.B、Applyforadifferentposition.C、Filethepaperinthecabinet.D、Showhertheadinthenews
最新回复
(
0
)