请选择 进入手机版 | 继续访问电脑版
楼主: ucom
312 0

[休闲其它] 食物供應鏈中的碳足跡 [推广有奖]

大师

15%

还不是VIP/贵宾

-

威望
1
论坛币
22632 个
通用积分
3228.4010
学术水平
314 点
热心指数
396 点
信用等级
189 点
经验
312197 点
帖子
3815
精华
0
在线时间
4957 小时
注册时间
2009-9-7
最后登录
2024-3-29

ucom 发表于 2020-2-11 09:48:09 |显示全部楼层 |坛友微信交流群
相似文件 换一批

+2 论坛币
k人 参与回答

经管之家送您一份

应届毕业生专属福利!

求职就业群
赵安豆老师微信:zhaoandou666

经管之家联合CDA

送您一个全额奖学金名额~ !

感谢您参与论坛问题回答

经管之家送您两个论坛币!

+2 论坛币
The Carbon Footprint of the Food Supply Chain MC.png

Which Foods Have the Greatest Environmental Impact?

[size=1.1]The quantity of greenhouse gases (GHGs) generated by our food can vary considerably across the global food supply chain.

[size=1.1]In fact, the difference between specific food types can vary by orders of magnitude, meaning what we eat could be a significant factor impacting GHG emissions on the environment.

[size=1.1]Today’s modified chart from Our World in Data relies on data from the largest meta-analysis of food systems in history. The study, published in Science was led by Joseph Poore and Thomas Nemecek to highlight the carbon footprint across different food types across the world.

The Foods With the Highest Carbon Footprint

[size=1.1]Worldwide, there are approximately 13.7 billion metric tons of carbon dioxide equivalents (CO2e) emitted through the food supply chain per year.

[size=1.1]Across a database extending through 119 countries and 38,000 commercial farms, the study found that, unsurprisingly, beef and other animal products have an outsize effect on emissions.

[size=1.1]For example, one kilogram (kg) of beef results in 60 kg of GHG emissions—nearly 2.5x the closest food type, lamb and mutton. In contrast, the same weight of apples produce less than one kilogram of GHG emissions.

[size=1.1] MC0.jpg

[size=1.1] MC.jpg

[size=1.1]When it comes to plant-based foods, chocolate is among the highest GHG emitters. One kilogram of chocolate produces 19 kg of GHGs. On average, emissions from plant-based foods are 10 to 50 times lower than animal-based types.

[size=1.1]Bottom line, it is clear that the spectrum of emissions differs significantly across each food type.

Food Supply Chain Stages

[size=1.1]The food supply chain is complex and nuanced as it moves across each stage of the cycle.

[size=1.1]Although the steps behind the supply chain for individual foods can vary considerably, each typically has seven stages:

  • Land Use Change
  • Farm
  • Animal Feed
  • Processing
  • Transport
  • Retail
  • Packaging

[size=1.1]Across all foods, the land use and farm stages of the supply chain account for 80% of GHG emissions. In beef production, for example, there are three key contributing factors to the carbon footprint at these stages: animal feed, land conversion, and methane production from cows. In the U.S., beef production accounts for 40% of total livestock-related land use domestically.

[size=1.1]On the other end of the spectrum is transportation. This stage of the supply chain makes up 10% of total GHG emissions on average. When it comes to beef, the proportion of GHGs that transportation emits is even smaller, at just 0.5% of total emissions.

[size=1.1]Contrary to popular belief, sourcing food locally may not help GHG emissions in a very significant way, especially in the case of foods with a large carbon footprint.

The Rise of Plant-Based Alternatives

[size=1.1]Amid a growing market share of plant-based alternatives in markets around the world, the future of the food supply chain could undergo a significant transition.

[size=1.1]For investors, this shift is already evident. Beyond Meat, a leading provider of meat substitutes, was one of the best performing stocks of 2019—gaining 202% after its IPO in May 2019.

[size=1.1]As rising awareness about the environment becomes more prevalent, is it possible that growing meat consumption could be a thing of the past?



二维码

扫码加我 拉你入群

请注明:姓名-公司-职位

以便审核进群资格,未注明则拒绝


您需要登录后才可以回帖 登录 | 我要注册

本版微信群
加JingGuanBbs
拉您进交流群

京ICP备16021002-2号 京B2-20170662号 京公网安备 11010802022788号 论坛法律顾问:王进律师 知识产权保护声明   免责及隐私声明

GMT+8, 2024-3-29 23:39