摘要
文章以成都市人民公园为例,踏查收集其内部8个不同功能区的乔木物种组成及花期,分析其物种的致敏潜力,并计算城市绿地致敏风险指数和多样性指标,探究城市公园乔木特征对诱发花粉致敏风险的影响。结果显示:1)人民公园共有乔木1724棵,分属32科44属50种,出现频率最高的乔木为樟科(1703%),其次为松科(1435%)和桑科(921%)。2)中、高致敏潜力的乔木物种合计占乔木总物种数的64%,公园的花粉致敏风险指数为0695,属于高致敏风险等级,贡献最大的致敏树种为银杏、其次为香樟和水杉,不同季节的致敏风险排序为春季>夏季>秋季>冬季。3)致敏风险指数仅与物种重要值(IV)极显著正相关,物种本身的致敏潜力和中、高致敏潜力树种占比是决定绿地花粉致敏风险的重要因素。最后,根据研究结果提出4项脱敏策略,以期降低城市公园的花粉致敏风险,提升其健康福祉。
The paper investigates the big tree species composition,flowering period and allergenic potential in 8 different functional areas in the People's Park of Chengdu,calculates the values of potential allergenicity(VPA)and species diversity index,and discusses the effect of arbor traits in urban parks on pollen allergenic risk.The results show that:1)There are 1724 trees in the People's Park,belonging to 50 species in 44 genera of 32 families.Lauraceae(17.03%),Pinaceae(14.35%)and Moraceae(921%)are the most used,2)The tree species with medium and high allergenic risk account for 64%of the total number of tree species.IUGZA for the park is 0.695,which is at the high allergenic risk level.Ginkgo biloba,Cinnamomum camphora,and Metasequoia glyptostroboides are the species with the highest allergenic risk.The seasonal allergenic risk is ranked as spring>summer>autumn>winter,and 3)IUGZA is only positively correlated with the species importance value(IV).The allergenic potential of species itself and the proportion of tree species with medium and high VPA are the important factors in determining the risk of high pollen allergy in green spaces.At the end,four targeted desensitisation strategies are proposed to reduce the risk of pollen allergy in urban parks and to improve People's health and well-being.
作者
吴晓奕
黄晓娇
宗桦
唐雨倩
Wu Xiaoyi;Huang Xiaojiao;Zong Hua;Tang Yuqian(School of Architecture,Southwest Jiaotong University,Chengdu 610031,China)
出处
《中国城市林业》
2023年第3期17-23,共7页
Journal of Chinese Urban Forestry
基金
国家自然科学基金面上项目(32271945)
国家自然科学基金面上项目(31971716)。
