The Premier Colin Barnett says the Department of Environment and Conservation will be separated into two separate agencies, if the Liberal Party is re-elected.

He says the DEC will be replaced by the Western Australian Parks Authority and the Department of Environment Regulation.

Mr Barnett says the DER will take care of regulations and licensing and remain in Perth.

The newly created WAPA will be based in Bunbury, as will a dedicated science and conservation facility.

Mr Barnett says sending half the current department to a regional centre is a logical move.

"I think it's desirable to separate the parks, their promotion and management and the science and the conservation role, away from the normal regulatory role and licensing role from the environmental agency," he said.

The Premier has pledged $20 million to build more low-cost camping and accommodation facilities in WA's national parks and reserves.

The funds would go towards camp shelters, communal kitchens, boardwalks and parking.

Mr Barnett says the Liberal Party will also spend $15 million creating the science and conservation headquarters in Bunbury.

The Labor Party has labelled the Liberal announcement as a token.

Its environment spokeswoman, Sally Talbot, says Mr Barnett and Environment Minister, Bill Marmion are late to the party.

"It's perfectly clear that neither Colin Barnett nor Bill Marmion has a vision or a plan to ensure that the state's most precious natural assets are protected," she said.