* Says euro zone economy has reached bottom * Finland to turn later * Mkt defined currencies help balancing global econ on long-term (Adds details, quotes) HELSINKI, Sept 10 (Reuters) - The euro zone economy has reached bottom, European Central Bank Governing Council member Erkki Liikanen said on Thursday. "In the euro zone it looks as if bottom has been already reached and some slight positive development is in sight within next year," the Finnish central banker told broadcaster MTV3 in a Finnish language interview. Liikanen said, however, the Finnish economy would pick up later. "For Finland, it looks as if we will have the positive development later." Speaking about balancing the global economy on a longer term, Liikanen said the main currencies should be market determined. "Naturally it helps if all the main currencies are in a position where they are determined in the market and not fixed," Liikanen said. Though the world economy is improving at a much faster pace than forecast, government and central bank stimulus must stay in place until a recovery is on more solid footing, fellow ECB Governing Council member Christian Noyer said on Wednesday. "Central banks have decided to continue their policy of economic support for the moment," he said.

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