Australia will push for a legally binding pact to tackle climate change in the United Nations summit starts on Monday.

Climate Change Minister Greg Combet will lead a 35-strong Australian delegation taking part in the talks in Cancun, Mexico, which runs until Dec. 10.

Australia is also sending its Climate Change Ambassador Louise Hand and about 35 officials from the departments of Climate Change and Energy Efficiency, Foreign Affairs and Trade, AusAID, Resources, Energy and Tourism and Combet's office to the conference in Mexico.

"The world needs to take strong and credible action to move to a low-pollution future and limit global temperature increase to less than two degrees Celsius," Combet told Canberra Times on Monday.

"Australia seeks a legally binding outcome that includes as many countries as possible. To achieve lasting emissions reductions, all major emitters must be part of the global solution. "

Combet said a final international outcome is not expected to be agreed at Mexico, but the Australian Government will work hard to make progress on key issues including adaptation, reducing emissions from deforestation and forest degradation, transparent reporting, and climate financing.

Meanwhile, Combet pointed out many countries were taking action to tackle climate change since Copenhagen conference in Denmark.

He said more than 80 countries including the U.S., China, India and Brazil have pledged to cut and limit their emissions, representing around 80 percent of global emissions and 90 percent of the global economy.

Prime Minister Julia Gillard on Monday promised to set carbon price in 2011.