溧阳市古树名木资源现状分析

Analysis of the existing resources and characteristics ofancient and famous trees in Liyang City

据溧阳市古树名木保存数据调查表明,溧阳市现存古树名木共计123株,其中一级古树(树龄500 a及以上)有7株,占5.69%,二级古树(树龄300—499 a)有18株,占14.63%,三级古树(树龄100—299 a)有98株,占79.67%。溧阳市古树名木资源树种构成为23科32属34种,其中榉树最多,计27株,占21.95%;其次为朴树,计16株,占13.01%;银杏11株,占8.94%;糙叶树7株,占5.69%;其余树种占比在4%以下。溧阳市古树名木资源以戴埠镇和天目湖镇分布较多。古树名木权属以国有和集体为主。古树名木生长环境较好,整体生长势正常,只有少部分出现衰弱和濒危。通过资源分析,对溧阳市后期在古树名木养护管理及利用方面提出了保护建议。

According to the survey and preservation data,123 ancient and famous trees were found in Liyang City,Jiangsu Province,including 7 ClassⅠancient trees(500 years old or above),accounting for 5.69%,18 ClassⅡancient trees(300—499 years old),accounting for 14.63%,and 98 ClassⅢold trees(100—299 years old),accounting for 79.67%.The above-mentioned resource species of ancient and famous trees belong to 34 species,32 genera,23 families.Among them,Zelkova schneideriana,27,accounts for 21.95%;Celtis sinensis,16,accounts for 13.01%;Ginkgo biloba,11,accounts for 8.94%;and Aphananthe aspera,7,accounts for 5.69%;the remaining below 4%.Many ancient and famous trees,distributed in Daibu Town and Tianmu Lake Town in Liyang,mainly state-owned and collective,are growing in good growth environment,only with a minority weak and endangered.Based on the resource analysis,their conservation and development suggestions were also put forward.