New York, Mar 6: India's Anil Ambani has emerged as the biggest wealth creator, while famed American investor Warren Buffett has overtaken software king Bill Gates and Mexican tycoon Carlos Slim to lead the list of world's richest people released by Forbes on Thursday.

As many as four Indians -- steel tycoon Lakshmi Mittal, Mukesh Ambani, his estranged younger brother Anil and realty baron K P Singh -- have made it to top 10 positions, as against just one, Mittal, a year ago.

India has retained its position as the top source of billionaires in Asia with total 53 people, who have a cumulative networth of 340.9 billion dollars on Forbes ' 2008 World's Billionaires list consisting of 1,125 people with a combined wealth of 4.4 trillion dollars. A year ago, there were just 179 billionaires, Forbes said.

With a networth of 62 billion dollars, Buffett has topped the list, followed by Carlos Slim Helu (60 billion dollars) and Bill Gates (58 billion dollars) on second and third positions.These three are followed by three Indians -- Lakshmi Mittal (45 billion dollars), Mukesh (43 billion dollars) and Anil (42 billion dollars) on fourth, fifth and sixth ranks. Besides, DLF's K P Singh (30 billion dollars) has been ranked, after Sweden's Ingvar Kamprad (31 billion dollars).

Forbes said that Anil Ambani is the biggest gainer with wealth soaring by 23.8 billion dollars since the last list. He is only one billion dollars behind his brother Mukesh, who is the second biggest gainer with a rise of 22.9 billion dollars in his networth.