Except as otherwise provided in section
460uu–45 of this title, any lands or interests therein within the boundaries of the monument or conservation area which after December 31, 1987, may be acquired by the United States shall be incorporated into the monument or conservation area, as the case may be, and managed accordingly, and all provisions of this subchapter and other laws applicable to the monument or the conservation area, as the case may be, shall apply to such incorporated lands.