Both countries will particularly support the least developed countries, island nations and African countries in battling climate change damage. They reiterated $100 billion promised by developed countries to fund developing economies in fight against climate change. In the statement, China and the US urged developed countries to continue their support for developing countries in emissions reduction.

China and the US endorsed the cooperation of their provinces, states and cities. Now 24 agreements have been signed among China's provinces and cities with US states and cities in a bid to reach a reduction target of greenhouse gases.

The two countries also reaffirmed their commitment to bilateral cooperation, both at the federal and sub-national levels.

Since 2011, China has launched pilot projects for carbon trading in locations that include Shenzhen, Beijing, Shanghai, Tianjin and Chongqing, and in Hubei and Guangdong provinces.

Li Shuo, senior climate and energy policy officer at Greenpeace East Asia, said creating a national market and putting a price on greenhouse gas emissions, particularly in energy-guzzling and highly polluting industries, will help China implement its climate change goals as well as help it realize a revolutionary transition from coal to renewable energies.

The plan is part of China's larger strategy to promote green, low-carbon development and meet its goals for cutting greenhouse gas emissions. Its commitment is expected to galvanize delegates going into this year's climate change summit in Paris, experts said.

In late June, the central government submitted proposals for cutting greenhouse gas emissions to the UN Framework Convention on Climate Change.

In June, during a visit to Paris, Premier Li Keqiang announced the nation's ambitious targets for cutting energy consumption per unit of economic output by 60 to 65 percent from its 2005 level.

The blueprint also includes green energy rules to increase renewable energy into the electrical grid, to improve the energy efficiency of green buildings.