MOSCOW, Oct. 29 (Xinhua) -- Russia's gross domestic product (GDP) may increase to 3 to 4 percent in 2011, the country's presidential aide Arkadi Dvorkovich said on Friday.

In case of negative scenario of global economic growth, the GDP could raise by 1.5 to 2 percent only, he said.

"I always feel optimistic as the chance for that (negative scenario) is less than 50 percent (in 2011)," Dvorkovich was quoted as saying by the local media.

Recently the Economics Ministry reported that the GDP increase for 2011 has been estimated at 4.2 percent while the European Bank for Reconstruction and Development predicted the GDP growth to 4.6 percent.

However, Dvorkovich said the number will unlikely exceed four percent.

"The most likely rise in 2011 will be over three percent, but unlikely surpass four," he added.