The Liberals, Labor and Jacqui Lambie have voted down a Greens motion to defend the priceless Aboriginal cultural heritage in the takayna/Tarkine against the Tasmanian Government's senseless vandalism.

"It is deeply disappointing that all Tasmanian Labor Senators and Senator Lambie chose to ignore the huge damage that will be done if the tracks in the Arthur Pieman Conservation Area are reopened," Greens Senator for Tasmania Nick McKim said.

"These are globally significant areas that need to be protected against hooning - both legal and illegal."