Forest covering an area more than 50 times the size of the combined central business districts of Sydney and Melbourne is set to be bulldozed near the Great Barrier Reef, official data shows, triggering claims the Turnbull government is thwarting its $500 million reef survival package.

Figures provided to Fairfax Media by Queensland’s Department of Natural Resources, Mines and Energy show that 36,600 hectares of land in Great Barrier Reef water catchments has been approved for tree clearing and is awaiting destruction.

The approvals were granted by the Queensland government over the past five years. About 9000 hectares under those approvals has already been cleared.

Despite the dire consequences of land clearing for the Great Barrier Reef – and billions of dollars of public money spent over the years to tackle the problem – neither Labor nor the government would commit to intervening to stop the mass deforestation.