text: Although, so far there are plenty of research on the impacts of global warming by 1.5 °C temperature, includ- 
  ing the impacts comparison of global warming by 1.5 °C versus 2.0 °C44. It is necessary to do more quantitative 
  impacts assessments of global warming by 1.5 °C and 2.0 °C on crops yield and market price to address research 
  gaps and support the requirement of the scientific community and governments. In this paper, the future climate 
  situations were selected and analyzed which are the approximate scenarios with global warming by 1.5 °C and 
  2.0 °C, based on the simulation results from 5 climate models recommended by ISI-MIP under 4 RCP scenarios. 
  Then the per unit yield changes of maize all over the world under global warming by 1.5 °C and 2.0 °C were 
  analyzed and the spatial distributions of changes in maize yield were revealed relative to the baseline from 
  1985 to 2006, applying crop model DSSAT (Decision Support System for Agrotechnology Transfer). Next, we 
  examine the effects of the resulting maize production shocks in different countries; the market price of maize is 
  simulated using GTAP to reveal the impacts of climate change on global crop trade. Finally, the future trend of 
  maize yield and market price in the main breadbasket is assessed and the adaptation suggestions are put forward 
  for maize cultivation. 