天河区主要道路行道树结构特征与碳储量研究

对广州天河区5条主要道路行道树进行了调查,并采用生物量转换因子连续函数法对行道树的碳储量进行估算。结果表明:天河区主要道路常用行道树共计10种,分别为杧果、小叶榕、大叶榕、高山榕、垂榕、美丽异木棉、小叶榄仁、假槟榔、樟、海南葡桃。行道树树高一般6.0~8.0 m,胸径一般为25±5 cm。大叶榕的单株生物量、单株碳储量均最高,对应值分别为0.308 t、0.153 t,其碳汇能力最强;美丽异木棉的含量则最低,对应值分别为0.077 t、0.038 t,其碳汇能力最弱。另外,杧果单位面积生物量及碳密度较其他树种高,而美丽异木棉的含量仍最低。

Structural Characteristics and Carbon Storage of Avenue Trees in Main Roads of Tianhe District

Avenue trees in five main roads of Tianhe District of Guangzhou City was investigated .Carbon storage of avenue trees were estimated by BEF(Biomass Expansion Factor) function method.Results showed that there were 10 kinds of avenue trees using in these roads, including Mangifera indica, Ficus microcarpa, Ficus virens, Ficus altissima , Ficus benjamina, Chorisia speciose, Terminalia mantaly, Archontophoenix al-exandrae, Cinnamomum camphora ( L.) Presl and Syzygium cumini.Tree height of the main avenue trees investigated averaged from 6.0 to 8.0 m, and the average DBH was 25 ±5 cm.Among the ten kinds of measured trees, Ficus virens had the highest carbon storage per plant which was 0.153 t, while Chorisia speciose had the lowest carbon storage per plant which was 0.038 t.For the average carbon density of arboreal forest a-mong the measured trees, Mangifera indica had lager value than other species.However, Chorisia speciose still had the lowest one.