Huon Valley Environment Centre activists erected a tripod and parked two vehicles across a road under construction in the Esperance area, while a second protest was staged in the Derwent Valley district.

The Greens backed the protests, saying road building in high-conservation forests should cease in line with the forest principles agreement.

But Forestry Tasmania accused the protesters of trying to sabotage the forest peace talks.

Both it and the state government said the coupes targeted yesterday were not on the list of coupes set aside during talks.

The opposition said the protests were evidence the statement of principles should be abandoned.

The state government announced a three-month moratorium on logging in sensitive areas on December 15.

Yesterday, Huon Valley Environment Centre spokeswoman Jenny Weber questioned Forestry Tasmania activity during the forestry phase-out period.

"Why is Forestry Tasmania spending more taxpayer money to lock in new logging around the state when industry, environmentalists and all levels of government have committed to an end to logging in just six weeks' time," she said.

Forestry Tasmania spokesman Ken Jeffreys said yesterday's protests were provocative.

"It is our firm belief that the Huon Valley Environment Centre is opposed to the peace talks, and will do whatever they can to unravel the good work of other environmental groups participating in the process," Mr Jeffreys said.

Mr Jeffreys said none of the areas targeted were on the list of 39 coupes that Forestry Tasmania withdrew from at the request of environmental groups.

He was backed by Resources Minister Bryan Green, who reiterated the government's support of the forestry statement of principles.

Greens leader Nick McKim said the 90-day period leading up to a formal implementation of the moratorium was not intended to allow a last- minute dash to access more forest areas.

"Any new roading into high-value conservation forest coupes should not be proceeded with in light of the fact that these areas will be covered by the agreed moratorium," Mr McKim said.