The department shall designate and regulate those classifications and uses of lands within the system as it shall deem proper to effectuate the purposes of this act and the act to which this act is a supplement, such that the New Jersey Natural Areas System shall include:
a. Areas of limited public access which are dedicated and restricted to ecological research and study, wherein the only permissible development shall be that of temporary, unobtrusive structures erected for scientific purposes and later removed;
b. Areas which provide opportunities for public interpretation of the natural processes, flora and fauna of this State, wherein the development of nature trails and educational facilities shall be permitted;
c. Areas of minimal interference by man wherein those recreational activities at those levels, to be determined by the department, which will not have serious or long-term effects on natural values and processes shall be permitted.