MANAUS, Brazil, Nov. 26 (Xinhua) -- A summit on climate change held by countries straddling the Amazon basin and France ended Thursday in Brazil's northwestern city of Manaus, with participants urging developed nations to implement their commitments to environmental protection.

    Earlier this month, Brazilian President Luiz Inacio Lula da Silva invited his counterparts from countries straddling the Amazon basin to the summit to discuss a common proposal for next month's United Nations climate change talks in Copenhagen.

    France has also been invited as its overseas department of French Guyana is located in the Amazon region.

    The UN climate change talks in Copenhagen will be held from Dec. 7 to 18, and are an opportunity for world leaders to strike a deal which will succeed the carbon-capping Kyoto Protocol.

    Brazilian Foreign Affairs Minister Celso Amorim said developing countries could not solve problems on climate change by themselves.

    In a declaration released after the summit, leaders and representatives from Brazil, France, Peru, Colombia, Ecuador, Venezuela, Bolivia and Guyana called on all developed countries, including those that have not signed the Kyoto Protocol, to implement their commitments to environmental protection.

    The participating countries also reaffirmed their "commitment to the principles and provisions of the United Nations Framework Convention on Climate Change (UNFCCC) and its Kyoto Protocol, particularly the principle of common but differentiated responsibilities."

    They called on developed countries "to implement significant emission reductions, according to their historical responsibilities."

    "Developing countries should also contribute to addressing the global climate change through mitigation actions according to their national conditions, supported by international funds," the statement said.

    During a press conference after the meeting, French President Nicolas Sarkozy regarded China's new proposals on combating global warming as promising.

    "The latest statements by Barack Obama and China's leaders are extremely encouraging in making Copenhagen a success," Sarkozy said.

    China's State Council announced Thursday that China was going to reduce the intensity of carbon dioxide emissions per unit of gross domestic product (GDP) in 2020 by 40 to 45 percent compared with the level of 2005.

    Lula said that the final document of the summit would guide discussions in the Copenhagen climate change talks.

    Discussions on environmental protection are a political subject rather than a technical one, he said, adding that the Copenhagen talks would probably gather more heads of state than any other conference on this issue.

    Moreover, it would take several decades to repair the environmental damage, but the Copenhagen conference was an auspicious start, Lula believed.

    Developed countries have provided funds to help developing countries deal with the consequences of climate change since it is a worldwide movement, Sarkozy said.

    For his part, Guyana's President Bharrat Jagdeo stressed that developing countries urgently needed financial assistance to cope with climate change.