N.D. Cent. Code § 55-11-13
Nothing contained in this chapter may be construed as interfering with the purposes stated in the establishment of or pertaining to any state or local park, preserve, wildlife refuge, or other area, or the proper management and development thereof, except that any agency administering a natural area dedicated as a nature preserve under the provisions of this chapter is responsible for preserving the character of the natural area in accordance with the articles of dedication and the applicable rules and regulations with respect thereto established by the department from time to time. Neither the dedication of a natural area as a nature preserve nor any action taken by the department under any of the provisions of this chapter voids or replaces any protective status under law which the natural area would have if it were not a nature preserve, and the protection provisions of this chapter are supplemental thereto. Under the provisions of this chapter, the department may not have or use the right of eminent domain.
N.D.C.C. § 55-11-13