There are authorized to be appropriated $4,000,000 for each of fiscal years 1998 through 2003, to enable the Secretary of the Interior to carry out his functions and responsibilities under this subchapter, including data collection, research, planning, and conservation and rehabilitation programs on public lands. Such funds shall be in addition to those authorized for wildlife, range, soil, and water management pursuant to section
1748 of title
43, or other provisions of law.