The European Union is urging countries including China, the United States and Japan to make further pledges in the run-up to next week's climate summit in Copenhagen.

Sweden presently holds the EU rotating presidency and its Prime Minister Fredrik Reinfeldt is warning that present undertakings on emission reductions fall short of the mark. He is visiting Nanjing in China on behalf of the EU for talks with Chinese Prime Minister Wen Jibao.

Last week, China said it was prepared to reduce CO2 emissions by at least 40 percent of 2005 levels by 2020. Mr Reinfeldt praised China's intentions, but wants details of the measures needed to implement the reduction.

He says China should take more of a leading role in the fight against global warming. The government in Beijing counters that it is making an enormous contribution on the issue.

A draft final communiqué for the Copenhagen summit has appeared in the media. It says greenhouse gas emissions must be reduced to 50 percent of 1990 levels by the year 2050 and that rich countries should shoulder most of the burden involved in achieving the target.

photo: Jose Manuel Barroso, Wen Jiabao and Fredrik Reinfeldt in Nanjing (EPA)