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不同台风等级对珠海城市绿化树木的影响
唐洪辉1, 宋 磊1, 李毓琦1, 杨清1, 许东先1, 钱万惠1, 唐敏聪2, 赵庆1
1.广东省林业科学研究院 广东省森林培育与保护利用重点实验室;2.广东省龙眼洞林场
摘要:
为探明不同台风等级对城市绿化树木的影响,根据台风“天鸽”及“海高斯”在珠海市的登 陆路径,划分 14、12、10 共 3 种风力等级影响范围,按城市绿地分类,选取 113 个调查样区,采用典型 抽样法,每个调查样区设置 1 个 400 m2 样方,调查记录样方内所有径级超过 5 cm 树种名称、受灾特征 等因子,并用 Excel 2010 和 SPSS 20.0 软件进行相关数据处理,结果表明:(1)风力等级越大,受害树 种种类及数量越多、受害程度越严重,风害值越大;在 14、12、10 级风力侵击下,其受害树种比例分别 为 92.65%、58.14% 和 44.74%,受害树木数量比例分别为 46.45%、31.29% 和 16.01%;平均风害值分别 为 0.344、0.181 和 0.072。(2)风力对不同树种侵击产生的风害值存在极显著差异(P < 0.01);风害值 可用作分析树木受害情况的量度指标,预判或评价树木抗风的能力。(3)台风侵击后风害值较小的树木, 可选择为沿海城市绿化树种;风害值中等的树种,应在台风季节前应做好防护措施;风害值较高的树种, 建议慎用。
关键词:  珠海市  绿化树木  台风等级  受害程度  风害值
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基金项目:广东省林业科技创新项目(2018KJCX029)。
Impacts of Typhoons with Different Wind Scales on the Urban Greening Trees in Zhuhai City
TANG Honghui1, SONG Lei1, LI Yuqi1, YANG Qing1, Xu Dongxian1, QIAN Wanhui1, tangmincong2, zhaoqing1
1.Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry,Guangzhou;2.Longyandong Forest Farm of Guangdong Province
Abstract:
To explore different typhoons’ impacts on urban greening trees, we selected 113 surveyed regions and used typical sampling method to set sample plots with 400 m2 on the basis of the landing paths of ‘Hato’and ‘Higos’as well as the classification of three typhoons’ wind scales at level 14, 12, and 10. We investigated and recorded all the trees with diameter over 5 cm and damaged characteristics and analyzed them with Excel 2010 and Spss 20.0. Our results showed: (1) With higher wind scale, a higher number of tree species were damaged seriously and the wind damage values (WDV) were hight. Under the wind scales at level 14, 12 and 10, the percentages of affected tree species were 92.65%, 58.14%, and 44.74%. The percentages of affected trees were 46.45%, 31.29%, and 16.01%. The averaged WDV were 0.344, 0.181 and 0.072.(2) WDV caused by different wind scales were extremely significantly different (P < 0.01). WDV could be used to analyze how much the treeswere damaged by typhoons and to predict trees’ anti-wind capacities. (3) The trees with low WDV after the attacking of a typhoon can be selected as coastal urban greening trees; the trees with medium WDV should be well pre-protected before typhoon comes; the trees with high WDV were suggested to be cautiously considered in coastal urban areas.
Key words:  Zhuhai city  greening trees  wind scale  damaged levels  wind damage values