PowerPoint Presentation€¦ · Photosynthesis and Energy Conversion . Virtual Water and Food...

Preview:

Citation preview

• Globally

• Agriculture Uses 70% of all Water

• Only 20% of the Ag-Land is Irrigated

• But Produces 40% of all Food

According to Poore & Nemecek 2016. Reducing Food’s Environmental Impacts Through Producers & Consumers. Science 360, 987-992

Agriculture uses 43% of the Terrestrial Land Surface87% is used for Food Production13% is for Non-Food (Biofuel, Textiles, Wool & Leather)

Environmental Impacts:13% of Global GHG is Generated from Food Production 26% of Global GHG is Generated from Production & Consumption32% of Terrestrial Acidification is from Agriculture78% of Eutrophication is from Agriculture45-50% of Water is used for Irrigated Agriculture

0

100000

200000

300000

400000

500000

600000

700000

800000

Agriculture GHG Emission By Key Countriesin giga grams / year

% of Globally Traded Food from Key Countries

Note, the USA and Brazil are responsible for 77% of all Soybeans ,41% of all Maize, 35% of all Beef, 56% of all Chickens and 30% of all Pork the was Globally Exported in 2013. This makes the Global Trade highly Vulnerable to disruption due to Climatic Events (Floods & Drought) and Crop and Livestock Diseases.

How much Water does it take to Maintain you Daily Diet?

What food do you like most?

And how much water is required to produce different Food Items?

Recommended