Determination of Risk Indicators for Establishing the Health Evaluation System of Old Trees

Abstract

The protection and management of old trees is important in the context of heritage protection and landscape construction. The purpose of this study is to determine the risk indicators of the health evaluation system for the old trees, and to provide methods for the protection and management of the old trees that are at risk. According to the index and weighted values obtained in the previous study the scores can be calculated on a 100-point scale. According to the score, the grades are divided into 5 levels. This study takes the case of a total of 30 old trees, including a Chinese juniper, located in Gyeongju Yangdong village, to evaluate the degree of danger in their actual condition. The results showed that of the Chinese juniper tree is at the healthy level, with the score of about 70, and is therefore in Level C. The trees in Yangdong village at high risk should be improved quickly. The standards set for the 5-level score graph and the establishment of a health evaluation system can reflect the actual situation of the old trees in Yangdong village, so it is both practical and scientific.