| 广州市中心城区古樟树生长状况调查及评价指标探讨 |
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| 引用本文： | 张俊涛,陈莹.广州市中心城区古樟树生长状况调查及评价指标探讨[J].安徽农业科学,2017,45(35):172-174,202. |
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| 作者姓名： | 张俊涛 陈莹 |
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| 作者单位： | 广州市林业和园林科学研究院,广东广州,510405;广州市林业和园林科学研究院,广东广州,510405 |
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| 摘 要： | 目的]调查广州市中心城区古樟树(Cinnamomum camphora)生长状况,探讨适合古樟树的健康评价关键指标.方法]采用实地调查的方法,以广州市中心城区前5批古树名木中古樟树为研究对象,对其树龄、生长状况、外貌特征和生长环境进行记录分析.结果]广州市中心城区古樟树树龄集中在100~249 a,总体生长状况处于中等水平,普遍存在树枝切口、树洞腐烂、树干或(及)树枝倾斜和附生植物栖居的现象;胸径、株高与树龄存在正相关性,随着树龄的增加,胸径增幅明显,而株高增幅较小;切口和树洞会对古樟树生长产生一定影响;树干或(及)树枝倾斜,遇到强风存在安全隐患;附生植物对古樟树生长影响较小;从生长环境来看,工程建设、树池面积较小和周边铺装硬化不利于古樟树的生长.结论]为科学评价古樟树健康状况,建议从生长位置、生长指标、树冠情况、树干情况、地面情况五大方面选取古樟树健康评价关键指标,以针对性地提出保护建议和措施.
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| 关 键 词： | 古树 生长状况 评价指标 保护建议 |
Growth State Investigation and Corresponding Evaluation Index Exploration for Ancient Cinnamomum camphora in City Zone of Guangzhou |
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| Abstract: | Objective] To investigate the growth status and select some of these parameters to work as key index to evaluate the health of Cin-namomum camphora located in the urban zone of Guangzhou. Method] Chosing the ancient Cinnamomum camphora trees as research object to record and analyze their age, growth state, appearance and growth environment by on-site investigation method. Result] The age of the ancient Cinnamomum camphora trees located in the urban zone of Guangzhou range from 100 to 249 a, their growth state was located at middle level. The rot of branch incision and tree holes, the tilt of trunk or branch and epiphytes were generally observed. DBH ( diameter at breast height) and CD ( crown diameter) showed a positive correlation with age of trees. As the increasing of age, the growing of DBH was obvious, but the height of tree increases slowly. Branch incision and tree holes impair the growth of tree;the tilt of trunk and branch decreases the re-sistance against to wind and also cause security problem;epiphytes causes relative lower influence on trees. Additionally, artificial activities like engineering construction, space occupation and hardening of the road also do harm to the growth of Cinnamomum camphora. Conclu-sion] The location, growth state, condition of CD, trunk and landscape were recommended as the main indexes to evaluate the health of ancient Cinnamomum camphora, corresponding suggestions and measures can be mentioned out depending on these findings. |
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| Keywords: | Ancient tree Growth state Evaluation index Protection suggestions |
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