调查:肉类生产与气候变化的联系
文章来源:未知 文章作者:meng 发布时间:2010-03-24 05:38 字体: [ ]  进入论坛
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UN specialists are to look again at the contribution of meat production to climate change, after claims that an earlier report exaggerated the link.

联合国专家正准备重新调查肉类生产与气候变化之间的关系,因为有人宣称之前的报告夸大了二者之间的联系。

<a href=Livestock1" width="466" height="225" to="" field="" from="" emissions2="" meat-related="" calculated="" shadow="" long="" s="" src="/upimg/100324/4_060302_1.jpg" />
Livestock's Long Shadow calculated meat-related emissions from field to abattoir3

A 2006 report concluded meat production was responsible for 18% of greenhouse gas emissions - more than transport.

The report has been cited(引用,引证) by people campaigning for a more vegetable-based diet, including Sir Paul McCartney.

But a new analysis, presented at a major US science meeting, says the transport comparison was flawed.

Sir Paul was one of the figures launching a campaign late last year centred on the slogan "Less meat = less heat".

But curbing4 meat production and consumption would be less beneficial for the climate than has been claimed, said Frank Mitloehner from the University of California at Davis (UCD).

"Smarter animal farming, not less farming, will equal less heat," he told delegates to the American Chemical Society (ACS) meeting in San Francisco.

"Producing less meat and milk will only mean more hunger in poor countries."

Leading figures in the climate change establishment, such as Intergovernmental Panel on Climate Change (IPCC) chairman Rajendra Pachauri and Lord (Nicholas) Stern, have also quoted the 18% figure as a reason why people should consider eating less meat.

Apples and pears

The 2006 report - Livestock's Long Shadow, published by the UN Food and Agriculture Organization (FAO) - reached the figure by totting up all greenhouse-gas emissions associated with meat production from farm to table, including fertiliser production, land clearance5, methane6(沼气,甲烷) emissions from the animals' digestion7, and vehicle use on farms.

But Dr Mitloehner pointed8 out that the authors had not calculated transport emissions in the same way, instead just using the IPCC's figure, which only included fossil fuel(矿物燃料) burning.

"This lopsided(不平衡的) 'analysis' is a classical apples-and-oranges analogy that truly confused the issue," he said.

One of the authors of Livestock's Long Shadow, FAO livestock policy officer Pierre Gerber, told BBC News he accepted Dr Mitlohner's criticism.

"I must say honestly that he has a point - we factored in(纳入) everything for meat emissions, and we didn't do the same thing with transport," he said.

"But on the rest of the report, I don't think it was really challenged."

FAO is now working on a much more comprehensive analysis of emissions from food production, he said.

It should be complete by the end of the year, and should allow comparisons between diets, including meat and those that are exclusively(专有地,唯一地) vegetarian9.



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1 livestock c0Wx1     
n.家畜,牲畜
参考例句:
  • Both men and livestock are flourishing.人畜两旺。
  • The heavy rains and flooding killed scores of livestock.暴雨和大水淹死了许多牲口。
2 emissions 1a87f8769eb755734e056efecb5e2da9     
排放物( emission的名词复数 ); 散发物(尤指气体)
参考例句:
  • Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
  • Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。
3 abattoir cowyi     
n.屠宰场,角斗场
参考例句:
  • The sheep were driven to the local abattoir.羊被赶到当地的屠宰场。
  • It was surreal meeting her at the abattoir.竟然会在屠宰场里遇见她,真离奇。
4 curbing 8c36e8e7e184a75aca623e404655efad     
n.边石,边石的材料v.限制,克制,抑制( curb的现在分词 )
参考例句:
  • Progress has been made in curbing inflation. 在控制通货膨胀方面已取得了进展。
  • A range of policies have been introduced aimed at curbing inflation. 为了抑制通货膨胀实施了一系列的政策。
5 clearance swFzGa     
n.净空;许可(证);清算;清除,清理
参考例句:
  • There was a clearance of only ten centimetres between the two walls.两堵墙之间只有十厘米的空隙。
  • The ship sailed as soon as it got clearance. 那艘船一办好离港手续立刻启航了。
6 methane t1Eyx     
n.甲烷,沼气
参考例句:
  • The blast was caused by pockets of methane gas that ignited.爆炸是由数袋甲烷气体着火引起的。
  • Methane may have extraterrestrial significance.甲烷具有星际意义。
7 digestion il6zj     
n.消化,吸收
参考例句:
  • This kind of tea acts as an aid to digestion.这种茶可助消化。
  • This food is easy of digestion.这食物容易消化。
8 pointed Il8zB4     
adj.尖的,直截了当的
参考例句:
  • He gave me a very sharp pointed pencil.他给我一支削得非常尖的铅笔。
  • She wished to show Mrs.John Dashwood by this pointed invitation to her brother.她想通过对达茨伍德夫人提出直截了当的邀请向她的哥哥表示出来。
9 vegetarian 7KGzY     
n.素食者;adj.素食的
参考例句:
  • She got used gradually to the vegetarian diet.她逐渐习惯吃素食。
  • I didn't realize you were a vegetarian.我不知道你是个素食者。
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