The governments of Mexico, South Africa and Denmark have agreed to form a three-nation negotiation team on environmental matters, the Mexican Foreign Ministry said Friday.

Denmark was the host for the United Nations climate change conference last year, Mexico will hold the next conference in November this year and South Africa in 2012. They seek to reach a worldwide agreement on the reduction of greenhouse gas emissions.

The troika was formed to "seek continuity and strengthen current negotiations on climate change and to boost leadership," the ministry said in a statement.

"During COP 16 (November conference), a constructive boost can be achieved and last beyond the summit," the statement said.

"The troika realizes that fast initial financing is essential in building trust, while transparency in the contributions made by each party is essential," it added.

Participants in last year's UN conference agreed on a 10-billion-U.S dollar fund for less developed countries to help them reduce emissions.