Australia's efforts to tackle climate change and fix environmental issues have been branded futile so long as repair programs are dwarfed by actions taking a sledgehammer to nature.

The warning comes on the back of a landmark report into climate risks facing the nation as the government promises to patch up a "broken" system.

Before his successor as agriculture minister trumpeted Australia's sustainable farming, Environment Minister Murray Watt told the Landcare Conference he wanted to reform environment frameworks within months.

The proposed changes stem from an almost five-year-old report that found national environmental laws were "fundamentally broken".

"Those laws are not working for the environment, which experiences ongoing decline," Mr Watt told the conference on Tuesday.

"The

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