China and the United States are committed to working together and with other countries for a successful outcome at Copenhagen summit next month, said a joint statement issued here Tuesday after talks between Chinese President Hu Jintao and his US counterpart Barack Obama.

The two sides has held a constructive and productive dialogue on the issue and maintained that international cooperation is indispensible in dealing with climate change, which poses one of the greatest challenge of the time, the statement said.

Both sides concede that transition to a low-carbon economy is an opportunity to promote continued economic growth and sustainable development in all countries.

Regarding the upcoming Copenhagen summit, the two countries expressed their willingness to strive for an agreed outcome based on the principle of common but differentiated responsibilities and respective capabilities.

"The two sides, consistent with their national circumstances, resolve to take significant mitigation actions and recognized the important role that their countries play in promoting a sustainable outcome that will strengthen the world's ability to combat climate change," said the statement.

The two countries also agreed that the outcome should include the emission reduction targets of developed countries and nationally appropriate mitigation actions of developing countries, adding that it should also substantially scale up financial assistance to developing countries,promote technology development, dissemination and transfer, and pay particular attention to the needs of the poorest and most vulnerable countries to adapt to climate change.