广州市两所高校校园主要行道树种的风险评价  

Risk assessment on main campus street trees in two universities in Guangzhou City

作　　者：黄滢 钟宇婷 刘佳玲 张卉儿 翁殊斐 HUANG Ying;ZHONG Yuting;LIU Jialing;ZHANG Huier;WENG Shufei(College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou 510642,Guangdong,China)

机构地区：[1]华南农业大学林学与风景园林学院,广东广州510642

出　　处：《湖南林业科技》2024年第2期16-24,共9页Hunan Forestry Science & Technology

基　　金：粤教高函[2023]4号(融合“树医生”理念的《园林植物栽植与养护》课程思政与实践教学改革研究);广东省大学生创新创业项目(S20221056407)。

摘　　要：校园行道树是高校校园绿化最重要的组成部分,具有美化校园景观、提供遮荫、展现校园文化、维护校园生态环境的作用。华南农业大学和华南理工大学是广州市两所历史悠久的高校,校园行道树景观具有华南本土特色。通过对校园行道树风险评价,对其潜在风险做出准确判断,及时采取相应的管理措施,从而降低有风险的行道树造成事故发生的可能性,提高校园防范和抵御安全性风险的能力,并为广州地区高校校园行道树树种的选用和管理养护提供借鉴和参考。研究采用园林树木风险评价模型和树木可视化诊断(VTA)技术,调查两所大学校园共400株行道树的树体结构和生长状况,评价其风险程度R值,探究R值与胸(地)径、树高的相关性。结果表明:(1)校园行道树评分22.25%为一级、68.5%为二级、8.75%为三级、0.5%为四级,显示校园绝大部分的行道树安全性风险极低和较低;(2)4个树种风险程度R值与胸(地)径显著相关(P<0.05),8个树种R值与树高显著相关(P<0.05);(3)人面子、美丽异木棉和3种棕榈科树种安全性风险较低,宫粉羊蹄甲、细叶榕、黄葛榕风险较高。分析了受调查树种风险状况,总结了高校校园行道树应用、管理和养护方法。提出校园绿化巡查时除继续关注棕榈科叶子枯萎情况外,还应重点关注风险高的树种,以及茎干受损宽度(C_(4))、茎干受损深度(C_(5))、茎干结构(C_(6))、根区受限(C_(7))4项评分较高的指标,并及时采取相应的管护措施。Campus street trees are the most important part of campus greening,which can beautify campus landscape,provide shade,show campus culture and maintain campus ecological environment.South China Agricultural University and South China University of Technology are two universities with a long history in Guangzhou City,and the campus street tree landscape has the local characteristics of South China.Through the risk assessment of campus street trees,accurated judgment of their potential risks could be made,and corresponding management measures could be taken in time to reduce the possibility of accidents caused by risky street trees,which will improved the ability of campus to prevent and resist safety risks,and provided reference for the selection,management and maintenance of street trees on campuses in Guangzhou area.Using the landscape Tree risk assessment model and Visual Tree Assessment(VTA)technology,this study investigated the tree structure and growth status of 400 street trees in two universities,evaluated their risk degree R-value,and explored the correlation between R-value and chest(ground)diameter and height.The results showed that:(1)22.25%of street trees on campus were level I,68.5%were level II,8.75%were level III,and 0.5%were level IV,indicating that the risk of street trees on most campuses was extremely low or low;(2)Risk degree R-value of 4 tree species was significantly correlated with chest diameter,and R-value of 8 tree species was significantly correlated with tree height;(3)Dracontomelon duperreanum,Ceiba speciosa and three palm species had low safety risk.The risk of Bauhinia variegata,Ficus microcarpa and Ficus virens was high.Therefore,the investigated tree species were analyzed and the application,management and maintenance methods of street trees in university campus were summarized.During campus afforestation inspection,we should pay more attention to tree species with high risk,stem damaged width(C_(4)),stem damaged depth(C_(5)),stem structure(C_(6))and root restriction(C_(7)),and took

关 键 词：高校校园 行道树 风险评价 树木可视化诊断 园林树木 广州市 

分 类 号：S731.2[农业科学—林学] S687.1