Climate change could mean fewer opportunities for farmers to grow crops and other food crops in areas that are at risk of being devastated by the weather, according to a report released Tuesday.

The National Academy of Sciences report said that, if temperatures continue to rise, climate change could reduce the number of potential food crops grown in the United States.

The loss of crop productivity could result in the loss of tens of millions of dollars in crop value, and the loss in revenue could be catastrophic, the report said.

The U.S. Department of Agriculture (USDA) said the report, which was prepared for the National Academy’s annual meeting in Chicago, does not include estimates of how many people would lose jobs because of climate change.

But the USDA estimated that in 2050, the average income of a farmer could decline by nearly $5,000 annually, the agency said.

Farmers are already struggling to keep up with the rapid increases in climate change, as the world is becoming warmer, and they may not be able to afford to pay for more efficient machinery, pesticides and other resources, the USDA said. 

The report, “Climate Change in Agriculture: A Comprehensive Assessment of Risk,” also said that climate change can make farmers more vulnerable to diseases that crop plants, livestock and livestock products depend on. 

“Climate change could have adverse impacts on crop yields, yields of certain crops, the health and well-being of crops, and economic productivity,” the report concluded. 

For instance, the U.N. Food and Agriculture Organization (FAO) says climate change may lead to “lower crop yields because climate-induced stresses could reduce crop yields.” 

The FAO report said climate change might also affect food safety, as climate change would increase the likelihood that farmers would not use pest-control chemicals. 

Climate change can also cause crops to fail, according the report. 

In the study, the authors estimated that climate-related damages to agricultural output would be $4.7 trillion by 2050. 

There are already about 2.5 billion farmers in the U .

S., with about 2 million of them working in the agricultural industry. 

If the projected impacts on the U  are not mitigated, they could reduce agricultural production by up to 30 percent and leave the country with a loss of $2.5 trillion, according a 2012 report by the National Academies. 

According to the report: “With the number and magnitude of projected changes in temperature and precipitation associated with global warming, there is an urgent need to address the threat to crop yields and food security in the US, which may not occur until well into the century.” 

“The US has already experienced extreme drought and crop failure in recent years, and more and more farmers are finding it increasingly difficult to find suitable soil to grow their crops, especially in states and regions experiencing drought, such as the Midwest, Southeast and the Southwest.”