The Federal Government would abandon a plan to log in Tasmania's World Heritage Area if it was not ratified by the United Nations environment committee.

UNESCO has previously said it does not support the logging of specialty species timbers in the Wilderness World Heritage Area, which covers about 20 per cent of Tasmania, about 1.6 million hectares.

The Federal Government has supported the proposal for logging outlined in the Tasmanian Government's draft management plan for the region.

The Government wants to open up just under 200,000 hectares for logging of some kind, about 12 per cent of the World Heritage Area (WHA).

A UN delegation recently visited the state to assess the practices and meet with stakeholders, with a final report expected next year.

The Assistant Minister for Agriculture, South Australian Senator Anne Ruston, said the logging plan would be scrapped if UNESCO did not support it.

"When they bring down that report I would be really surprised if the Federal Government did anything other than respect those decisions," she said.

"We respect the decision of UNESCO."

Tasmanian boat builder Andrew Denman uses specialty species timbers and is worried about the prospect.

"It is a concern, we fully expect the Federal Government to go into bat for the specialty species timber industry," he said.

"It's a major concern that the resource is now essentially behind closed doors."

Senator Ruston said she had some sympathy for users of specialty species timber.

"They also have an argument which is reasonable, that they have very low impact where they take those timbers from," she said.

The Tasmanian Government also said it would abide by UNESCO's call.