Abstract
This paper examines how large growth rates of rice yields will be necessary for long-term national food security of Bangladesh in the climate change era, using a food demand-supply model. A criterion of 2% growth rate for dry season rice production and 1% for rainy season rice production, which was presented by a previous study, is shown to be enough for sustainable food security under a climate change scenario with 2.6 degrees Celsius rise in temperature by the end of the 21st century, but it is also shown not to be enough for a climate change scenario with 3.4 degrees Celsius rise.