* Chinese vice minister says dollar to dominate for years

* France, Russia want reserve debate

* Russia sees no obvious replacement for euro, dollar

* ECB's Trichet says U.S strong dollar support important (Updates with Chinese vice minister's comments)

By Silvia Aloisi and Anna Willard

ROME/AIX-EN-PROVENCE, France, July 5 (Reuters) - France and Russia on Sunday urged a debate about the world's reserve currencies, but China said the dollar would keep its pre-eminence for "many years to come."

Beijing, which has floated the idea of an alternative to the dollar as global reserve currency one day, wants the matter discussed at this week's G8 summit in Italy, officials say.

But in remarks that appeared intended to reassure Washington, Chinese Vice Foreign Minister He Yafei told reporters in Rome: "The U.S. dollar is still the most important and major reserve currency of the day, and we believe that that situation will continue for many years to come.