Global food production capacity affected by climate warming

In the past 30 years, global warming has led to a substantial decline in some food production capacity, which may also be an important factor in the rise of global food prices in recent years, US researchers reported on May 5 Researchers from Stanford University and Columbia University used the model to analyze the relationship between global climate data and four major agricultural products -- corn, wheat, rice and soybean production between 1980 and 2008 They found that during this period, if the global temperature did not rise, Russia's wheat production could have increased by more than 10% compared with the actual level, India, France and China's wheat could have increased by several percentage points; China, Brazil and France's corn production would also have been higher than the actual production In the past 30 years, global corn and wheat production capacity has declined by 3 to 5 percentage points due to climate warming, and the impact on rice and soybean production capacity is negligible, the researchers concluded The researchers also found that although during this period, the average temperature of cultivation season in almost all regions of Europe, most of Asia, Africa and parts of South America increased by several degrees Celsius, which increased the probability of extreme high temperature in these regions, there was a significant exception in the world - unlike the global trend, the corn and soybean belt in the Midwest of the United States The temperature did not rise during the summer farming season Researchers do not yet understand why The research will be published in the new issue of science on May 6 The researchers pointed out that in the coming decades, the trend of global warming is expected to continue, and the impact on food production capacity will be further expanded in the context of the continuous increase of global food demand.