The purpose of AS 41.21.150 - 41.21.153 is to restrict state-owned land and water described in AS 41.21.151, except as provided in AS 41.21.153, to use as a state park. Under AS 38.05.300, state land, water, or land and water containing more than 640 acres may be closed to multiple use only by act of the legislature. Because the area described in AS 41.21.151 exceeds 640 acres, AS 41.21.150 - 41.21.153 are intended to provide for the closing of the land and water described in AS 41.21.151, as that description is modified by AS 41.21.153, to multiple use in conformity with AS 38.05.300 and its designation as a special purpose area in accord with art. VIII, sec. 7 of the Constitution of the State of Alaska.