BALI, Indonesia, Dec. 3 (Xinhua) -- Chinese delegate Su Wei to the UN climate change conference, which is opened here Monday, said any future agreement on climate change should continue to follow the principles of common but differentiated responsibilities established in the United Nations Framework Convention on Climate Change (UNFCCC).

Addressing the conference, Su said developed countries should at least reduce their greenhouse gas emissions by 25 percent to 40 percent by 2020 compared to 1990 levels.

Su said the task of adaptation is especially urgent for developing countries who are most vulnerable to the adverse impacts of climate change.

The future arrangement should focus specifically on strengthening adaptation, so as to improve the adaptation capabilities of developing countries, Su said.

Su said the future arrangement to address climate change should focus on enhancing implementation of current provisions of the Convention and its Kyodo Protocol, and further strengthen those provisions in accordance to the latest scientific assessments.