地位级、立地指数对评定立地质量的作用地位级是评定林分立地条件的质量指标。它标志着该种在当地立地条件下的林分生产力。在林龄相同的情况下,同一林分立木的平均树高能很明显地反映出立木生产力的高低。因此,只要把林分生长过程表中各地位级中不同龄阶的平均树高,按龄阶顺序排列成地位级查定表,即可通过某一林分立木的年 Status level, site index on the assessment of the role of site quality status level is to assess the quality of forest stand quality indicators. It marks the species’s stand productivity at the site. In the same age, the average tree height of the same stand detached wood clearly reflects the productivity of standing wood. Therefore, as long as the average tree height of different ages in different ranks in each growth stage of the stands is arranged in the order of age into status-level checklists,