Abstract
Now world population is near 6 billion and has doubled for the last 35 years. The population increase and its future explosion inevitably attracted the attention of ecologists, because the mankind can face a crisis associated mainly with the fool production for the new six billion of people who will acid to the world community in the middle of next century. The population increase and its future explosion avoiding this food problem? To answer this question, possible effects of carbon dioxide increase and its induced global warming on agriculture should be taken into account.
To reliably assess future agroclimate conditions, it was suggested that GCM generated climate changs and paleoclimate scenarios based on the past warm epochs, when carbon dioxide and mean surface temperature were higher than those in the present time, should be used. The nine models and three paloclimate scenarios have been used to assess agricultural consequences of world climate changes in Russian regions and in the countries of the world.
The major conclusion of the analysis carried out is that expected carbon dioxide increase and anthropogenic warming will in general beneficially affect crop productivity in most agricultural regions of the world, especially in temperate zone and some arid regions.
