| 摘要: |
| 以广东省古树名木普查数据为基础, 采用皮尔逊相关系数 (Pearson??s correlation) 和线性混合
模型分析广东省古樟树 Camphora officinarum 的资源特征及影响因子。 结果表明: 广东省现存古樟树 5 816
株, 树龄、 树高、 胸径和冠幅主要集中在 100 ~ 199 a, 12. 0 ~ 20. 0 m, 63. 7 ~ 127. 4 cm 和 12. 0 ~ 20. 0 m。
古樟树空间分布差异大, 粤北山区多, 粤东沿海少。 古樟树树龄、 树高、 胸径和冠幅与多数环境因子呈极
显著相关性, 与坡向相关性不显著。 年均降雨量、 海拔和年均温度是影响古樟树树龄、 树高、 胸径和冠幅
的重要因子; 寄生、 根系裸露和树洞对古樟树树龄、 树高、 胸径和冠幅的影响最大。 总之, 广东省古樟树
数量较多, 以三级古树为主; 生长在高海拔寒冷地区的古樟树比低海拔高温地区的挺拔、 雄壮; 古樟树的
生长势和生长状况整体较好, 但仍有部分生长受病虫害、 生长空间、 环境污染等因素影响。 |
| 关键词: 古樟树 空间分布 生长状况 相关性分析 广东省 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技创新项目(2020KJCX004) |
|
| Study on Resource Characteristics and Impact Factors of Ancient Camphor Trees (Camphora officinarum) in Guangdong Province |
|
CHEN Pan, GUO Shengcai, CHEN Qiuju, TAN Zhiquan, ZHANG Hongai, DENG Dongwang
|
|
Guangdong Forestry Survey and Planning Institut
|
| Abstract: |
| Based on the census data of ancient and famous trees in Guangdong province, this study analyzed the resource characteristics of Camphora officinarum and the underlying factors using Pearson??s correlation and linear mixed model. The results showed that there were 5 816 ancient camphor trees in Guangdong Province, and the age, height, DBH, and crown width of the ancient camphor tree were mainly concentrated in
theranges of 100-199 a, 12. 0-20. 0 m, 63. 7-127. 4 cm, and 12. 0-20. 0 m, respectively. The ancient camphor
trees were distributed unevenly across Guangdong Province, most of which lived in the mountainous areas of
northern Guangdong, and few lived in the coastal areas of eastern Guangdong. The age, height, DBH, and
crown width of the ancient camphor tree were significantly correlated with most of the tested environmental factors, but not with the slope direction. Average annual rainfall, altitude, and average annual temperature were
the most important factors influencing the age, height, DBH, and crown width of ancient camphor trees. Parasitism, bare roots, and tree holes had the strongest effects on age, height, DBH, and crown width. In short, there are a large number of ancient camphor trees in Guangdong province, mainlythree-classancient trees. The
ancient camphor tree growing in the high-altitudecold areais taller and stronger than that in thelow-altitudehigh temperature area. The growth status and potential of ancient camphor trees are generally good, but some growth
is still affected by diseases and insect pests, limited growth space, environmental pollution, and other factors. |
| Key words: ancient Cinnamomum camphora growth status spatial distribution correlation analysis Guangdong Province |
