PROBLEM TO BE SOLVED: To provide a nature evaluation method and a nature evaluation program by which even a nonexpert can determine nature evaluation in a shorter period of time and on which substance circulation characteristics are reflected.SOLUTION: The nature evaluation program according to one aspect of the invention allows a computer to execute a procedure for obtaining microorganism activity data for vegetation quantity data. Although not limited in this case, it is preferable to obtain the vegetation quantity data and the microorganism activity data in each of a plurality of survey sections. Further, a plurality of survey sections include a plurality of reference sections and at least one section to be surveyed, and it is preferable to evaluate whether or not the microorganism activity data for the vegetation quantity data in the section to be surveyed is within an allowable range of the microorganism activity data for the vegetation quantity data in the plurality of reference sections. Further, the nature evaluation method according to another aspect of the invention obtains microorganism activity data in the soil for vegetation quantity data.
