The TCA was the only one of 11 not to sign the agreement reached between industry and environment groups before the lower house voted on legislation to enact the agreement.

The TCA wanted to give its members a chance to have a say first, but despite a strong majority rejecting the agreement at a vote at the weekend the board yesterday vowed to support it anyway.

The agreement, designed to end the 30-year conflict, guarantees 137,000 cubic metres of wood supply for industry and could lead to 504,000 hectares of new reserves.

TCA chief executive officer Jim Adams said it was a difficult decision.

"The board grappled with the views expressed by the membership over the weekend, and took those views into account at great length, but on balance we made the decision that the TCA could best continue to represent its membership from within the process rather than on the outer," Mr Adams said after the board meeting.

Mr Adams said the board wanted to be part of the council of signatories that will assess the durability outcomes before any reserves are created.

The TCA will now push for amendments to the legislation to be debated in the Legislative Council next week to ensure it closely matches the agreement.

This includes a requirement for the Forest Protection Authority to consider social and economic impacts as well as environmental factors when it considers applications to harvest coups.

TCA member Kelly Wilton said many members had not received notification of the weekend's meetings and she was considering pulling out of the group.

"We have been shafted," Ms Wilton said.

Deputy Premier Bryan Green said the TCA had made the right decision.

He said the low turnout, with less than 10 per cent attending the weekend's meetings, indicated that most just wanted the government to fix this issue.