According to study and forecast of the Intergovernmental Panel on Climate
Change (IPPC) and the World Bank, in Vietnam, the sea level rising 1 meter will flood about
0.3-0.5 million hectares in Red River Delta and 1.5-2.0 million hectares in Mekong Delta. In
the high floods, about 90% area of Mekong Delta was flooded for 4-5 months, includes
mainly rice land flooded and salt-penetrated and unproductive. The climate change increases
natural disasters and decreases crop productivity. In the ADB point of view, if temperature
raises more 1oC, rice output will reduce 10%. This will pose a serious threat to national food
security and impact on tens of million people.