The purposes of this Act are—
(a) to amend the National Parks Act 1975 to make further provision for parks under that Act; and
(b) to amend the Crown Land (Reserves) Act 1978 to make further provision for reserves under that Act; and
(c) to make other amendments to those Acts; and
(d) to amend the Heritage Rivers Act 1992 and the Mineral Resources Development Act 1990 .