A senior Chinese official said on Sunday that all countries should shoulder common but differentiated  responsibility in reducing greenhouse gas emission based on their national situations and levels of economic development.

China is a responsible country in promoting reduction of greenhouse gas emission and has made positive contribution in this regard, Wan Gang, Minister of Science and Technology of China, said in an interview with Xinhua.

He said as a developing country, China's per capita carbon dioxide emission was much less than that of the United States and European countries. However, it has been taking all kinds of measures to reduce gas emission.

Wang Gang stressed that the Chinese government attaches great importance to energy saving and emission reduction and has set the target of reducing greenhouse gas emission by 20 percent per unit GDP during 2006-2010, which is rare in the world.

He added that Chinese scientific and technological departments would do more in concerned research and application and contribute further to emission reduction and environmental protection through technological innovations.