Number of trees per unit area has been used as a guideline for forest management. Unlike the cases of timber production, the qualitative improvement of the forest landscape management cannot be measured only by numbers of trees. In order to achieve this qualitative improvement, visibility and brightness are essential factors. Therefore, in this analysis, it became necessary to create some new numerical indexes capable of reflecting these factors, and as a result, two functions were created that are called "Bole Space Volume" and "Diameter Breast Height Index". These two functions were created with such elements as number of trees, diameter breast height, bole height, floor vegetation height and crown density per unit area. These elements are essentially related to the visibility and the brightness of the forest. It was confirmed that these functions will be a guideline for forest landscape management because they make it possible to assume visible distance and relative light intensity that are influencing on the qualitative improvement by the forest management.
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