The Greens will defy intense lobbying from former leaders Bob Brown and Christine Milne and vote against a Nationals motion to kill off the scheme.

The debate over carbon credits and its impact on native logging has divided the Greens. Some even compare the issue to the party's rejection of Rudd's CPRS.

The Greens are pushing for tweaks to a controversial new plan to end logging in native forests in an attempt to resolve a major internal dispute.