text: meantime, the huge differences in yield changes in different regions provide a small chance for the world, espe- 
  cially under global warming by 1.5 °C. In the near future, if the global temperature can be effectively controlled 
  under 1.5 °C warming scenario, there would be an increase in the potential for maize yield in the worldwide. 
  All regions and countries should take actions to reduce the yield loss risk. For the yield-increasing regions, the 
  potentials of climate resources should be fully utilized to guarantee maize yield under future scenarios; for the 
  yield-reducing regions, the targeted adaptation actions should be taken in advance under global warming by 
  1.5 °C and 2.0 °C. 
  
  Meanwhile, the risk of price fluctuations caused by global corn trade due to future climate change should be 
  paid more attention to, especially for developing and undeveloped countries. In the view of supply and demand, 
  the population would go up quickly in the next 30 years; the demand for maize would increase hugely; however, 
  the supply of maize would go down in the future, especially under global warming by 2.0 °C; it would intensify 
  the contradiction between supply and demand, which would threaten the food security and sustainable develop- 
  ment in the whole world. 