Proposed legislative changes will make it easier for big companies to exploit mineral reserves, the Green Party says.
The government on Wednesday released a discussion paper on proposed changes to the Crown Minerals Act, which is open for public submissions.
Green's mining and energy spokesman Gareth Hughes says the changes would make it easier for companies to exploit oil and gas resources such as methane hydrates and coal seam gas.
"The government increased funding to promote mining and drilling in last year's budget and now it's proposing legislative changes to accelerate this backward-looking economic strategy," he said.
The party's onshore mining spokeswoman Catherine Delahunty says if the proposals are implemented there's going to be more pressure to mine conservation land.
The Greens are urging people to make submissions rejecting the proposals.