Tasmania's Opposition leader will send Forestry Tasmania into log World Heritage listed areas, if elected at next year's state poll.

The new Coalition Government plans to reverse the heritage listing of 120,000 hectares of forests.

The Liberal Party opposes the state's forestry peace deal and the forest reserves legislation which seeks to shrink the industry.

State Liberal leader Will Hodgman says he would send the state-owned timber company in to the de-listed World Heritage areas to access specialty timbers.

"We'd allow that to happen and to provide that resource that's needed to grow the industry...including in the recently listed world-heritage area," he said.

"We've had specialty timbers obtained to produce world-class products and this is a very important part of value adding."

Upper House independent Adriana Taylor included an amendment to the peace deal legislation allowing for logging in contingency coupes inside the protected areas.

But it is understood the World Heritage listing supersedes that.

Warning war will rage

The Wilderness Society is warning the forestry wars would rage again if the logging goes ahead.

Spokesman Vica Bayley says doing that would plunge the forestry industry back into conflict with conservationists.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Listen Duration: 3 minutes 38 seconds 3 m 38 s Forest controversy reignites in Tasmania ( Felicity Ogilvie ) Download 1.7 MB

"This is an agreement that needs to be delivered in full," Mr Bayley said.

"It's got outcomes for the conservation community and for the environment, it's got outcomes for workers, for the broader community and for the industry.

"You can't just cherry-pick bits of a comprehensive agreement like that and expect it to hold together."

In a statement, acting premier Bryan Green agrees it would reignite forestry conflict and erode international markets.

Mr Green says the Liberal's position is at odds with the timber industry and what its customers want.

Greens leader Nick McKim says any logging will mobilise conservation groups.

"There's no doubt that if this happened...that would be an end to the agreement and it would plunge Tasmania back into conflict and division and I've got no doubt that would translate to protests on the ground and action in the markets."

Law experts have previously doubted whether Australia has the power to ask for the listing to be revoked, without having to pull out of the World Heritage convention altogether.