As the backbone tree species of road greening,street trees play an irreplaceable role in beautifying the city and improving the ecological environment. Due to the complexity of the urban environment and the growth characteristics of street trees,the safety of street trees faces many challenges. In order to scientifically evaluate the safety of street trees on Shennan Avenue in Shenzhen,this paper uses Visual Tree Assessment (VTA) and Instrument Detection Method to determine the safety indexes of street trees on Shennan Avenue,such as tree appearance,species,internal damage rate of trunk,site environment and root growth,and carry out sub-item evaluation and overall evaluation. The results showed that the main trunks of the street trees had different degrees of hollow rot,and some of the trees had poor standing habitats and poor root growth. The diameter at breast height had a highly significant positive correlation with the degree of internal damage and external damage (P<0.01),tree height had a highly significant positive correlation with the degree of internal damage (P<0.01) and has a significant positive correlation with the degree of external damage (P<0.05),and crown width only had a significant positive correlation with the degree of external damage (P<0.05). Finally,this paper proposes management and protection suggestions such as selecting appropriate tree species,regular pruning and trimming,strengthening soil moisture and nutrient management,and controlling pests and diseases,to improve the city's ability to prevent and resist safety risks such as tree fall and breakage.
Street treeTree risk factorTree safety evaluationPlant maintenance
维普
万方数据
