Half of the population may face a food crisis

This is a painful problem, around the equatorial belt - from the 35th latitude North to the 35th South latitude - the most crowded in the world and especially it tends to rise faster than anywhere other.

Global food science professor David Battisti said: 'Food production in high temperatures like this is a big challenge, and that is us. Excluding the provision of irrigation water for this region if the temperature continues to rise even higher. '

He published his research in Science magazine on January 9, 2009. In this study he collaborated with Stanford University's Director of Environmental and Food Protection Program, Rosamond Naylor, to investigate the effects of climate change on world food sources.

Naylor said: 'This is a very compelling reason for us to invest in adaptation, because it is clear that we are moving in the same direction with global warming and losing goods. The new decade can develop new crop varieties adapted to this climate. '

'We are suffering from the worst consequences ever and certainly the future is worse if we do not have adaptation.'

Collecting observations from 23 climate models around the world in a 2007 Nobel Prize-winning study, Battisti and Naylor claim that by 2100, there are up to 90% of the lowest temperatures in the region Tropical or semi-tropical will be higher than any temperature ever.

Half of the population may face food crisis in 2100. (Photo: internationalministries.org)

They also used the research materials as a filter to look back at all historical evidence of not ensuring a serious food supply, and concluded that this situation became widespread in many places. another. These examples include the situation in France in 2003 and in Ukraine in 1972. In Ukraine's issue, record record temperatures have reduced wheat production and led to disruption of the ranks of the market. The cup lasts for 2 years.

'I think what frightens us the most is going back to the previous period, so we can find a way to solve the problem within a year. People can still go somewhere looking for food. But in the future there is no place for us to go unless we have to change the way we think about our own food supply. ' Naylor said.

This serious earth climate will not be able to stop the tropical climate, scientists conclude. As a proof, they cited record temperatures that raged in Western Europe in June, July and August 2003, killing nearly 52,000 people.

The heat during the long summer in France and Italy has reduced wheat production and produced hay for cattle to a third. In France, temperatures are close to 6.4 degrees Fahrenheit for a long time and scientists say this temperature may become normal in the country by 2100.

In the tropics, higher temperatures are the main reason for the decline in production of food crops such as corn and rice by 20-40%. However, the rise in temperature may also devastate the nutrient moisture in the soil, reducing the crop yield much lower.

'We are trying to think about changing the entire agricultural system, not only thinking of new varieties, but also seeing that many people will quit farming, and even leave the land where they are living, ' Naylor commented.

Nearly 3 billion people now live in the tropics and subtropics, which is almost double by the end of the century. The region stretches from South America to Northern Argentina and Southern Brazil, from North India and South China to South Australia and the whole of Africa.

Scientists say many people currently living in these regions earn only $ 2 a day and rely entirely on agriculture for their lives.

'When all the signals point in the same direction, it is a bad direction and you can more or less know what's going to happen. You are talking about hundreds of extra people every day looking for food because they can't find where they are. ' Battisti said.

He also said wheat flour makes up a quarter of the calories consumed every day in India, but the growing of wheat has been stagnant for the past decade.

The increase in temperature due to climate change is slower in sub-equatorial regions than in higher latitudes, but because the average temperature in tropical regions is now much higher at The regions between the rhinos and the rising temperatures will have a greater impact on this tropical crop.

The recent UW study demonstrated that the smaller the temperature rise in tropical regions is, the more affected the temperature is because the life in the tropics does not undergo frequent changes in climate and therefore less adaptive. That urges scientists to seek ways to face the current warming conditions of the earth.

Mr. Battisti said: 'You can let that happen and suffer or you can plan it now. You can also alleviate it and not let it happen soon to you, but we ourselves are not doing our job well on it. '