Federal Environment Minister Tony Burke is set to announce the nomination of long-disputed Tasmanian wild forests to the World Heritage list.

A goal of national environment groups for almost 30 years, the nomination is a central plank in the state's forest peace deal.

More than 130,000 hectares of mainly tall old growth eucalypt forests fringing the existing Western Tasmania Wilderness would be protected by the nomination.

Some of these forests in the Styx, Weld and Florentine valleys were scenes of repeated confrontations between loggers and environmental groups after they were left out of the Western Tasmania World Heritage Wilderness Area.

After two years of talks, the nominated area was agreed by green and industry groups in the peace deal last year.

But the nomination was placed in doubt when the deal was held up by the state parliament's upper house, which has referred it to a select committee.

Mr Burke is in Hobart on Thursday to tie up the nomination before the World Heritage Committee's annual February 1 deadline.

It is understood that he will announce the nomination, securing the prime areas among a total 504,012 hectare of native forests to be protected under the deal.

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