广安市古树名木资源特征及保护对策

Resource Characteristics and Protective Strategies of Ancient and FamousTrees in Guang'an City

为进一步加强广安市古树名木保护管理,统计分析了广安市古树名木资源现状。结果表明:广安市共有古树名木792株,一、二、三级古树和名木分别为:7株,占比0.88%;64株,占比8.08%;709株,占比89.52%;12株,占比1.52%。树种多样,隶属21科27属29种,黄葛树占大多数,其次为银杏、柏木、皂荚、木樨、樟、润楠等。古树名木主要为散生分布,在邻水县、岳池县、广安区分布较多,武胜县、华蓥市、前锋区分布较少,集中分布在海拔500 m以下区域,占比91.16%,海拔700 m以上为润楠、樟、扁刺锥等树种。古树名木胸围、树高、冠幅集中分布在100~599 cm、10.00~29.99 m、5.00~24.99 m,胸围、树高、冠幅最大的均为黄葛树。柏木平均树龄317年最高,大多数树种平均树龄低于200年。古树生长环境较差的有51株、占比6.44%,生长势濒危或衰弱的有60株、占比7.58%。剖析了古树名木保护复壮措施和存在的问题,提出了具体保护管理对策及建议。

In order to further strengthen the management and protection of ancient and famous trees in Guang'an City,this paper Statistically analyzed the characteristics of ancient and famous tree resources in Guang'an.There are 792 ancient and famous trees,The number and proportion of ancient trees under primary,secondary,tertiary protection and famous trees were 7 trees(0.88%),64 trees(8.08%),709 trees(61.78%)and 12 trees(1.52%).There are rich tree species,belonging to 21 families,27 genera and 29 species,with Ficus virens accounting for the majority,followed by Ginkgo biloba,Cupressus funebris,Gleditsia sinensis,Osmanthus fragrans,Cinnamomum camphora,Phoebe nanmu and other tree species.The results showed that,ancient and famous trees are mainly scattered and distributed in Linshui County,Yuechi County,Guang'an District.They are less distributed and concentrated in Wusheng County,Huaying City,Qianfeng District.In the area below 500 m above sea level,it accounts for 91.16%.Above 700 m above sea level,there are tree species such as Cinnamomum camphora,Phoebe nanmu,Castanopsis platyacantha.The chest girth,tree height,and crown width of ancient and famous trees are concentrated in the range of 100~599 cm,10.00~29.99 m,5.00~24.99 m.The ones with the largest chest girth,tree height,and crown width are all Ficus virens.The average age of Cupressus funebris is the highest at 317 years,and the average age of most tree species is less than 200 years.51 ancient trees have poor growth environments,accounting for 6.44%,while 60 ancient trees are endangered or weak in growth,accounting for 7.58%.It analyzes the protection and rejuvenation measures and existing problems of ancient and famous trees,and puts forward specific protection and management strategies and suggestions.