Many variables will factor into when China's greenhouse gas emissions will peak, and the issue requires more in-depth analysis, Zhou Dadi, vice-chairman of the National Energy Advisory Committee, told China Daily on Friday.

Recent media reports said China's greenhouse gas emissions might peak before 2025.

The Chinese government has always attached great importance to climate change issues and has actively responded, said Zhou, who is also a professor at the Energy Research Institute of the National Development and Reform Commission.