SA at risk of more bushfires: report

South Australia is at risk of more frequent and "ferocious" bushfires unless deep cuts to carbon emissions are made, the Climate Council says.

A report released on Monday warns that heatwaves in SA have increased in frequency, intensity and duration due to a spike in greenhouse gas emissions, making the risk of bushfires much greater.

It comes after a Country Fire Service volunteer, 38, suffered severe burns and died on Friday while helping a neighbour contain a fire in the state's mid-north.

Report author Professor Lesley Hughes says the state is likely be exposed to serious health risks and economic costs unless carbon emissions are cut "rapidly and deeply".

"We need to be prepared for this increasing risk," she told reporters.

"Part of that is being prepared to spend more money to deal with the risk."

It's estimated the annual cost of bushfires in SA will jump to $79 million by 2050.

Earlier studies have suggested Australia will need to double its number of professional firefighters to effectively combat longer bushfire seasons.

Fire bans have been fast-tracked in eight of SA's 14 districts, with dry conditions and above average temperatures expected until at least the end of the year.