跳转到内容

File:Land-use-of-different-diets-Poore-Nemecek.png

页面内容不支持其他语言。
这个文件来自维基共享资源
维基百科,自由的百科全书

原始文件 (2,048 × 1,259像素,文件大小:1.12 MB,MIME类型:image/png


摘要

描述
English: If we would shift towards a more plant-based diet we don’t only need less agricultural land overall, we also need less cropland. This might go against our intuition: if we substitute beans, peas, tofu and cereals for meat and dairy, surely we would need more cropland to grow them?

Let’s look at why this is not the case. In the chart here we see the amount of agricultural land the world would need to provide food for everyone. This comes from the work of Joseph Poore and Thomas Nemecek, the largest meta-analysis of global food systems to date. The top bar shows the current land use based on the global average diet in 2010.

As we see, almost three-quarters of this land is used as pasture, the remaining quarter is cropland. If we combine pastures and cropland for animal feed, around 80% of all agricultural land is used for meat and dairy production.

This has a large impact on how land requirements change as we shift towards a more plant-based diet. If the world population ate less meat and dairy we would be eating more crops. The consequence – as the following bar chart shows – would be that the ‘human food’ component of cropland would increase while the land area used for animal feed would shrink.

In the hypothetical scenario in which the entire world adopted a vegan diet the researchers estimate that our total agricultural land use would shrink from 4.1 billion hectares to 1 billion hectares. A reduction of 75%. That’s equal to an area the size of North America and Brazil combined.

But importantly large land use reductions would be possible even without a fully vegan diet. Cutting out beef, mutton and dairy makes the biggest difference to agricultural land use as it would free up the land that is used for pastures. But it’s not just pasture; it also reduces the amount of cropland we need.

This is an important insight from this research: cutting out beef and dairy (by substituting chicken, eggs, fish or plant-based food) has a much larger impact than eliminating chicken or fish.
日期
来源 https://ourworldindata.org/land-use-diets
作者 Hannah Ritchie
授权
(二次使用本文件)

“All visualizations, data, and code produced by Our World in Data are completely open access under the Creative Commons BY license. You have the permission to use, distribute, and reproduce these in any medium, provided the source and authors are credited.

“The data produced by third parties and made available by Our World in Data is subject to the license terms from the original third-party authors. We will always indicate the original source of the data in our documentation, so you should always check the license of any such third-party data before use and redistribution.”

许可协议

w:zh:知识共享
署名 相同方式共享
本文件采用知识共享署名-相同方式共享 4.0 国际许可协议授权。
您可以自由地:
  • 共享 – 复制、发行并传播本作品
  • 修改 – 改编作品
惟须遵守下列条件:
  • 署名 – 您必须对作品进行署名,提供授权条款的链接,并说明是否对原始内容进行了更改。您可以用任何合理的方式来署名,但不得以任何方式表明许可人认可您或您的使用。
  • 相同方式共享 – 如果您再混合、转换或者基于本作品进行创作,您必须以与原先许可协议相同或相兼容的许可协议分发您贡献的作品。

说明

添加一行文字以描述该文件所表现的内容
The amount of globally needed agricultural land would be reduced by almost half if no beef or mutton would be eaten.

此文件中描述的项目

描绘内容

弹性素食主义 中文(已转写)

image/png

文件历史

点击某个日期/时间查看对应时刻的文件。

日期/时间缩⁠略⁠图大小用户备注
当前2021年3月6日 (六) 20:022021年3月6日 (六) 20:02版本的缩略图2,048 × 1,259(1.12 MB)PJ GeestUploaded a work by Hannah Ritchie from https://ourworldindata.org/land-use-diets with UploadWizard

以下2个页面使用本文件:

全域文件用途

以下其他wiki使用此文件:

元数据