UPDATE 1-Rosneft, facing natural output decline, floats idea of oil production cut
* Four nations agreed to freeze oil output at Jan levels in Doha
* Rosneft oil output seen falling 2 pct in 2016 - sources
* Russian oil firms back output freeze deal, not cuts (Adds more quotes, background)
By Olesya Astakhova, Katya Golubkova and Vladimir Soldatkin
MOSCOW, March 2 (Reuters) - Russia's Rosneft, the world's biggest listed oil producer by volume, is floating the idea of a domestic production cut to balance the global market and as the firm faces a natural decline this year, two industry sources said.
It was not immediately clear whether Rosneft was proposing that its own output be reduced or that production across all Russian energy firms go down.
A reduction in Rosneft's output alone would be offset by growth at other producers. According to Russian Energy Ministry data, Gazprom Neft, Bashneft and Tatneft showed growth in February.
Russia, Saudi Arabia, Qatar and Venezuela reached a preliminary agreement last month in Doha to freeze oil production for this year at levels reached in January, in a move to curb surplus supply on the global oil market.
Following a meeting on Tuesday with the heads of Rosneft, Lukoil, Gazprom Neft, Bashneft, Surgutneftegas and others in the Kremlin, Russian President Vladimir Putin said on Wednesday that they agreed to stick to the Doha deal. Continuación...