China's economy will slow after 2030, when GDP growth is estimated to be 5.5 percent, creating challenges and risks, a senior economist said on Tuesday.

Li Wei, director of the Development Research Center of the State Council, made the comments at the Fourth World Industrial and Commercial Organizations Forum, held by the China Federation of Industrial Economics.

Li forecast that economic growth would exceed 7 percent in 2014, and expansion would be stable at about that level through 2020.