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东莞市古树名木资源特征分析
苏纯兰1, 严朝东1, 胡秋艳1, 陈灼康, 刘颂颂1, 张　浩2, 张柱森2
1.东莞市林业科学研究所;2.香港高等教育科技学院,中国 香港
摘要:
基于东莞市古树名木普查数据，对东莞市古树名木资源的数量特征、种类组成、区系分布、 结构特征进行统计和分析。结果表明：东莞市共有古树名木 3 859 株，隶属 36 科 68 属 85 种，以豆科 Leguminosae、大戟科 Euphorbiaceae、漆树科 Anacardiaceae、樟科 Lauraceae、桑科 Moraceae、桃金娘科 Myrtaceae 为优势科，科分布具有较强的热带属性；以榕树 Ficus microcarpa、杧果 Mangifera indica、荔 枝 Litchi chinensis、木棉 Bombax malabaricum 和水翁 Cleistocalyx operculatus 等为优势种。东莞各域镇均 有古树名木分布，尤以松山湖片区数量最多、物种最为丰富。从结构特征看，平均树高为 12.34 m，主要 集中在 10-20 m；平均胸径为 1.07 m，主要集中在 0.5-1.5 m；平均冠幅 13.07 m，且树高、胸径和冠幅之 间具有显著的正相关关系。
关键词:  古树资源  东莞市  种类组成  结构特征  分布格局
DOI：
分类号:
基金项目:东莞市国际科技合作项目“莞港古树褐根病普查与防治技术研究”(2016508101008)。
Characteristics of Ancient and Famous Trees Resources in Dongguan City
SU chun lan1, LIU song song1, HU qiu yan1, ZHANG hao2, LI wei bin1, CHEN Kui Xian1
1.Forest Research Institute of Dongguan,Dongguan;2.Technological and Higher Education Institute of Hong Kong,Hong Kong
Abstract:
The quantity, species composition, flora distribution, structure characteristics of ancient and famous tree resources in Dongguan city were analyzed based on the general investigation data. The results showed that there were 3 859 ancient and famous trees belonging to 85 species in 68 genera of 36 families in Dongguan city. The dominant families were Leguminosae, Euphorbiaceae, Anacardiaceae, Lauraceae, Moraceae, Myrtaceae, and the dominant species were Ficus microcarpa, Mangifera indica, Litchi chinensis, Bombax malabaricum, and Cleistocalyx operculatus. The distribution characteristics of the ancient and famous trees resources possessed the strong tropical attributes. From spatial distribution status, ancient and famous trees distributed widely, and more quantities and species mainly concentrated in Songshan Lake area. In terms of structural characteristic, tree height was focused between 10 and 20 and maverage height was 12.34 m, DBH was focused between 0.5 and 1.5 m and average diameter was 1.07 m, average crown breadth was 13.07 m . And there were positive correlation between DBH，height and crown breadth for ancient and famous trees.
Key words:  ancient tree resources  Dongguan city  species composition  structure characteristics  distribution pattern