| 摘要: |
| 为了加强对古树的科学保护与管理，通过访谈估测法、文献追踪法、树龄与胸径回归模型估测法等方法，对河源市的古树进行研究。结果表明：1）古树数量共计 1995 株，集中在红锥 Castanopsis hystrix、榕树 Ficus microcarpa、枫香 Liquidambar formosana、木荷 Schima superba、雅榕 Ficus concinna等观赏树种以及龙眼等经济树种；2）古树树龄相对集中，主要属于三级古树，平均年龄为 195.56 a； 3）古树分布特征差异明显，主要集中在丘陵与山区县域，尤以客家乡村最为密集；4）古树健康状况总体较好，受虫害及建设扰动使部分古树出现衰弱与濒死情况；5）古树生长状况较佳（P<0.01）。研究指出，古树保护即将进入一个科技与文化并重的时代，需要做到依照古树类型、古树年龄、文化区域、健康状况、生长系数等多要素兼顾的精细化管理。 |
| 关键词: 河源市 古树 种类 树龄 分布特征 生长状况 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技创新项目（2020KJCX004 ）、广东省林业科技计划项目（2020-KYXM-07） |
|
| Analysis on Characteristics of Ancient Trees Resources in Heyuan City |
|
Wei Dan
|
|
Guangdong Academy of Forestry
|
| Abstract: |
| In order to strengthen the scientific protection and management of ancient trees, the ancient trees in Heyuan city were studied by the methods of interview estimation, literature tracking, tree age and DBH regression model estimation, etc. The results showed that: 1) the total number of ancient trees was 1995, mainly including the ornamental trees such as Castanopsis hystrix, Ficus microcarpa, Liquidambar formosana, Schima superba, Ficus concinna, Castanopsis carlesii, Celtis sinensis, Althingia gracilipes and Photinia davidsoniae, and economic trees such as Dimocarpus longan that can pick fruits. From the structural distribution characteristics. 2) The age of ancient trees is relatively concentrated, mainly belonging to tertiary ancient trees, with an average age of 195.56 a. 3) The distribution characteristics of ancient trees are obviously different, mainly concentrated in Dongyuan county, Heping county, Lianping county and Longchuan county, among which the countryside is the most dense. 4) Ancient trees are in good health on the whole, and some of them are weak and dying due to insect pests and construction disturbance. 5) The growth status of ancient trees was better and the results of correlation analysis showed that there was a significant positive correlation between tree height and DBH, tree height and crown width, and between DBH and crown width of ancient trees in Heyuan city (P<0.01). According to the study, the scientific protection of ancient trees should be carefully controlled according to plant types, plant ages, cultural regions, health conditions and growth conditions. |
| Key words: Heyuan city ancient trees species tree-age distribution characteristics growth status |
