China, Xi said, is willing to work with other countries to reach an ambitious agreement at the upcoming Paris climate conference under the principles of common but differentiated responsibilities, fairness and respective capabilities.
"Against the backdrop of economic globalization, China and the outside world are highly interdependent, sharing weal and woe," said the Chinese foreign minister.
"The stronger China grows, the more secure the peace of the Asia-Pacific region and the world will be; the steadier the Chinese economy runs, the more promising regional and global prosperity will become," Wang added.
JOINTLY FIGHTING AGAINST TERRORISM
On the sidelines of the APEC meeting, Xi on Thursday strongly condemned the Islamic State (IS) for killing a Chinese national and expressed his deep sympathy for the victim's family.
Chinese authorities earlier confirmed the death of Chinese hostage Fan Jinghui, who had been held by the IS, saying those responsible must be brought to justice.
"Terrorism is the common enemy of the mankind," Xi said, adding that China firmly opposes terrorism of all forms and will resolutely crack down on any terrorist crime that challenges the bottom line of human civilization.
Xi's remarks came prior to the joint declaration, in which the leaders also "strongly condemn all acts, methods, and practices of terrorism in all their forms and manifestations."
"We will not allow terrorism to threaten the fundamental values that underpin our free and open economies," said the declaration, adding that economic growth, prosperity and opportunity are among the most powerful tools to address the root causes of terrorism and radicalization.
"We stress the urgent need for increased international cooperation and solidarity in the fight against terrorism," the APEC leaders said in the declaration.