Liberal MPs will descend on Canberra as their divided party is poised to ditch its pledge to achieve net-zero emissions by 2050.

The Liberals' formal position on the climate target will be finalised following mid-week meetings in the nation's capital, with the party to negotiate a single policy with the Nationals in the days to follow.

Infighting over the issue has intensified, placing further pressure on Opposition Leader Sussan Ley's leadership since the Nationals announced their position ahead of their coalition colleagues.

Liberal frontbencher and moderate Andrew Bragg on Sunday flagged he would be open to quitting the shadow cabinet if his party decided it would pull out of international climate change treaty the Paris Agreement.

He reaffirmed his support for lowering emissions, s

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