32 - Decline in Agricultural Yields


Declines in agricultural yields have already been reasons for conflicts in Rwanda and Syria.
Earth from Space
Global food security is a major challenge in the face of population growth and climate change. One of the first steps in achieving food security for all is to know which crops are growing where and how – each season. ESA’s WorldCereal product demonstrates the world’s first dynamic system to provide seasonally updated crop information to help monitor agricultural production across the world.
Credits :© European Space Agency - ESA
7Causes
In northern countries, a little increase in temperature can lead to better yields, but in southern countries, it's the contrary: Any degree warmer is a decrease in yields.
Bees and worms are indispensable to agriculture.
3Consequences
2Other possible causes
Studies have shown that yields increase with increased CO2, but that the nutrient content of vegetables is reduced as a result, because trace elements are not more abundant when yields increase.
Generally forests burn better than wheat fields.