It is the final meeting before the United Nations Climate Change Conference to be held in Cancun at the end of this year, and the first time that such formal meeting has been convened in China, Xie told a media briefing here.

About 3,000 delegates from party and observer countries under the United Nation Framework Convention of Climate Change and the Kyoto Protocol will participate in the meeting from October 4 to 9.

"All parties at the Tianjin Conference should work to expand common ground and lessen disagreement to lay out the negotiation text for the Cancun meeting. The Tianjin meeting will have an important impact on the talks in Cancun," he said.

China would continue its constructive role in the negotiations and hoped all parties could work to push forward the talks, he said.

At the end of last year, China announced plans to cut greenhouse gas emissions per unit of GDP by 40 to 45 per cent by 2020 from the 2005 level.

Nationwide efforts have been made to meet the target of improving energy efficiency by 20 percent from 2005 to 2010, he said.

The government has been stepping up closures of outdated production capacity, which has been blamed for pollution and hindering industrial upgrading.

China has eliminated 7077 million kilowatts of small-scale, outdated power capacity during the 11th Five Year Plan period from 2006 to 2010, official Xinhua news agency reported.