Australian Greens Leader Christine Milne says Tony Abbott has once again made a disastrous captain's call in backing his Liberal ideologues on Tasmanian forests, and now risks repeating the mistake.

"The disaster that is the Tasmanian forest industry is clearly at the feet of Tony Abbott with his stupid captain's call. Don't do it again, Prime Minister.

"Forestry Tasmania is never going to get FSC certification and the blame lies squarely with Mr Abbott and Tasmanian Liberals.