楼璐 何云核

摘要 [目的]掌握宁波主要园林树种的抗风能力。[方法]调查9号、18号台风过后宁波主城区园林树种的受害情况，筛选出8个种植范围较广且较为典型的园林树种进行相关试验分析。测定8个树种枝条的木材纤维特性、木材力学性质、抗风性能，分析木材性质与抗风值的相关性，综合评价抗风性。[结果]抗风值与枝条纤维长宽比（相关系数0.843）、枝条弯曲弹性模量（相关系数0.779）存在强正相关。8个树种中，以柚、木犀、樟、水杉的抗风能力较好，广玉兰、构树、意杨的枝条抗风能力较差。[结论]该研究为今后宁波市区园林树种的选择与应用提供了科学依据。

关键词 园林树种;纤维长度;纤维宽度;弹性模量;抗风能力

中图分类号 S-781  文献标识码 A

文章编号 0517-6611（2021）12-0116-05

doi：10.3969/j.issn.0517-6611.2021.12.029

开放科学（资源服务）标识码（OSID）：

Evaluation of Wood Properties and Wind Resistance of Branches of Major Garden Trees in Ningbo

LOU Lu，HE Yun he （School of Landscape Architecture，Zhejiang A&F University，Hangzhou，Zhejiang 311300）

Abstract [Objective]To master the wind resistance ability of main garden trees in Ningbo.[Method]The damage of landscape tree species in the main urban area of Ningbo after typhoon No.9 and No.18 was investigated.Eight typical landscape tree species with wide planting range were selected and analyzed.The wood fiber properties，wood mechanical properties and wind resistance of 8 tree species were measured，and the correlation between wood properties and wind resistance was analyzed.[Result]There was a strong positive correlation between wind resistance value and fiber aspect ratio （correlation coefficient 0.843） and bending modulus of elasticity （correlation coefficient 0.779）.Among the 8 tree species，Citrus maxima，Osmanthus fragrans，Cinnamomum camphora，Metasequoia glyptostroboides，while Magnolia grandiflora，Broussonetia papyrifera and Populus euramevicana had lower wind resistance.[Conclusion]This study provides a scientific basis for the selection and application of landscape tree species in Ningbo City in the future.

Key words Garden tree species;Fiber length;Fiber width;Modulus of elasticity;The wind resistance ability

寧波地处我国东南沿海台风多发地区。在夏季，风害是宁波等多风地区毁坏城市绿化的主要自然灾害之一。因此，选择抗风性良好的植物作为行道树、沿海防护林、园林绿化、建筑绿化等，是城市环境建设的迫切需求[1]。据统计，2007年至今对宁波市造成影响的台风数量为46个，平均每年3.5个[2]，且几乎每年对宁波的农林牧渔业造成巨大影响。历年来，影响宁波的台风数量有增无减，随着气象部门对台风预测能力的提升，群众抗台应急意识的增强，城市绿化部门相关预防及灾后重建措施的完善，使台风对宁波的影响处于可控制范围内。但台风后大量行道树的倒伏对绿化及交通的影响较大，如何选择适宜宁波生长又具有较好抗风能力的行道树树种并进行合理配置是目前值得探讨的问题。……