南宁市不同生境下5种园林灌木叶功能性状研究OA
Study on Leaf Functional Traits of Five Garden Shrubs under Different Habitats in Nanning City
为探究城市中不同生境对园林灌木叶片功能性状的影响及其种间适应性差异,以南宁市快速环道分车带和青秀山为研究区,选取龙船花(Ixora chinensis)、灰莉(Fagraea ceilanica)、黄蝉(Allamanda schottii)、黄金榕(Ficus microcarpa)和黄素梅(Duranta erecta)5 种典型园林灌木为研究对象,测定其叶片功能性状;运用单因素方差分析(ANOVA)、相关性分析以及模糊隶属函数分析综合评价植物适应性.结果表明:(1)生境类型显著影响 5 种园林灌木的叶片功能性状(p<0.05);在青秀山生境下,SLA(比叶面积)较快速环道平均提高 13.6%,LDMC(叶干物质含量)降低 5.1%,叶片 N、P、K 含量在青秀山分别增加 4.4%、12.1%和 12.2%.(2)种间适应性差异方面,黄素梅在青秀山具有最高的 SLA(190.34 cm2/g)和叶全氮含量(20.56 mg/g);灰莉快速环道叶全钾含量(24.74 mg/g)高于其他物种(p<0.05);比叶面积在青秀山生境下普遍较高,黄素梅在快速环道中 LDMC 最大(0.347 g/g);叶片 N、P、K 含量因植物种类和生境影响差异显著,在快速环道中灰莉 P、K 含量(0.486、24.74 mg/g)最高.(3)模糊隶属函数分析表明,黄蝉综合适应性最优,黄素梅和灰莉分别在不同生境中表现突出.研究结果说明,不同生境下园林灌木叶功能性状差异显著,建议根据生境特点优先选择适应性强的树种.研究为亚热带城市绿化树种科学配置提供依据.
To explore the effects of different habitats in the city on the leaf functional traits of garden shrubs and the differ-ences in interspecific adaptability,this study took the fast ring road divider belt in Nanning and Qingxiu Mountain,as the research area,and selected five typical garden shrubs,namely,Ixora chinensis,Fagraea ceilanica,Allamanda schottii,Ficus microcarpa,and Duranta erecta as the research objects.The leaf functional traits were measured,and the plant adaptability was comprehensively evaluated by one-way analysis of variance(ANOVA),correlation analysis,and fuzzy membership function analysis.The results showed that:(1)Habitat types significantly affected the leaf functional traits of the five garden shrubs(p<0.05).In the Qingxiu Mountain habitat,SLA increased by 13.6%,and LDMC decreased by 5.1%on average compared with the fast ring road.The contents of N,P,and K in leaves increased by 4.4%,12.1%,and 12.2%,respectively.(2)The highest SLA(190.34 cm2·g-1)and leaf total N(20.56 mg·g-1)were found in the Qingxiu Mountain habitat.The contents of total K(24.74 mg·g-1)in the fast ring road leaves were significantly higher than those in other species(p<0.05).The specific leaf area was generally higher in the Qingxiu Mountain habitat,and the LDMC of Duranta erecta was the largest(0.347 g·g-1)in the fast ring road habitat.The contents of N,P,and K in leaves were significantly different due to plant species and habitats.The contents of P and K were the highest in the fast ring road habitat(0.486,24.74 mg·g-1).(3)The analysis of fuzzy member-ship function showed that Allamanda schottii had the best comprehensive adaptability,and Duranta erecta and Fagraea ceilanica were outstanding in different habitats.The results showed that the leaf functional traits of garden shrubs in different habitats were significantly different.It was suggested that the tree species with strong adaptability should be selected according to the charac-teristics of habitats,so as to provide a basis for the scientific allocation of landscaping tree species in subtropical cities.
赵彩云;朱栗琼;招礼军;吕佳峻;陆尔佳
广西大学林学院 广西 南宁 530004广西农业职业技术大学城乡建设学院 广西 南宁 530007广西大学林学院 广西 南宁 530004||广西森林生态与保育重点实验室 广西 南宁 530004广西大学林学院 广西 南宁 530004广西大学林学院 广西 南宁 530004
农业科技
生境园林灌木叶功能性状适应性南宁市
habitatsgarden shrubsleaf functional traitsadaptabilityNanning City
《热带农业科学》 2026 (7)
32-38,7
国家自然科学基金(No.31560061)广西自然科学基金(No.2013GXNSFAA019057)广西林业科技推广示范项目(No.桂林科研[2022]第1号).
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