Mexico's President Felipe Calderon has called on the world's leading nations to contribute $10 billion to endow a Global Green Fund charged with financing programmes to combat climate change.

"We want it to become a financial mechanism that mobilises and brings together the different investment efforts dealing with climate change," Calderon said Monday in this central Mexican city of Jiutepec at the beginning of a two-day preparatory session for a forum next month on energy and climate.