杭州古树树干空洞状况调查研究

Health Status of Old Trees in Hangzhou

使用Fakopp声纳探测仪对杭州市113株古树树干的内部腐烂空洞情况进行检测。按树干内部空洞的比例大小,将古树空洞程度分划为无空洞、轻度空洞、中度空洞、重度空洞4个等级,检测结果显示,古树空洞程度各个等级所占比例分别为25.7%、15.9%、30.1%、28.3%。在此基础上对古树空洞形成的原因进行分析,并提出了保护措施。

Based on the investigation on 113 old trees in Hangzhou, this paper detected the conditions of in- ternal rotten holes by Fakopp sonar detector. According to ratio of the rotten sections to the total area of the sections, these trees were classified into 4 levels, including nil, light, moderate, and heavy hollows. The proportion of the 4 levels accounted for 25.7%, 15. 9%, 30. 1%, and 28.3%, respectively of 113 trees surveyed. Main factors of forming hollows in the trees were discussed, countermeasures were put forward.