China will take the lead among the world's biggest carbon emitters in starting domestic procedures to ratify the Paris Agreement ahead of the G20 summit in Hangzhou.

The move comes as global heavyweight investors urged world leaders to speed up their own ratification process.

China's legislators are scheduled to debate and review the Paris Agreement next week, which was agreed by over 190 members of the United Nations at the end of 2015, while the government has proposed ratifying the resolution, according to an earlier report.