王圳 李凤凤 高亚军 丛日杰 江尧凯 姜雷

摘要： 文章使用泰森多边形法计算变异系数并叠加高程地形数据对连云港市古树名木的空间分布类型进行分析，并在收集历史资料的基础上开展古树名木资源普查，全面分析古树名木树种组成、数量、空间结构、生长势状况和区系组成。结果表明：1）连云港市古树名木资源整体呈现明显的集群分布，其数量和山地面积、土地面积均显著相关。2）古树名木资源极为丰富，隶属于39科64属76种;从单种数量看，银杏、朴树、黄连木、楸树和鹅耳枥占比均超过全部种数量的5%，是典型的优势种。3）古树名木南北过渡的特征明显，即以温带成分为主的同时，热带成分异常丰富。4）古树名木健康状况良好，生长势衰弱多与人工负面干预有关。研究结果可为地区绿化造林和城市森林生态系统构建提供科学参考。

关键词： 古树名木，空间分布，资源组成，连云港市

DOI： 10.12169/zgcsly.2021.08.03.0001

Spatial Distribution Characteristics and Resources Composition of

Ancient and Famous Trees in Lianyungang City

Wang Zhen1Li Fengfeng2Gao Yajun1Cong Rijie1Jiang Yaokai3Jiang Lei3

（1.Lianyungang Forestry Technology Guidance Station， Lianyungang 222100， Jiangsu， China;

2.Haizhou Forestry Technology Guidance Station， Lianyungang 222100， Jiangsu， China;

3.Nanyuntai Forest Farm Management Office， Lianyungang 222100， Jiangsu， China）

Abstract： The paper analyzes the types of spatial distribution of ancient and famous trees in Lianyungang City using Thiessen polygon to calculate the variable coefficient which is then combined with the topographical data of elevation， and carries out a general investigation based on the historical materials collected for the comprehensive analysis of species composition， quantity， spatial structure， growth status and flora of these trees. The results show that： 1） Ancient and famous tree resources are obviously in clustered distribution， and their number is significantly correlated with mountainous area and land area. 2） Lianyungang City is abundant in ancient and famous trees， and there are 76 species belonging to 64 genus and 39 families. In terms of the quantity of single species， ginkgo， hackberry， pistacia， catalpa and carpinus all exceeds 5% in proportion as the dominant species. 3） It suggests significant south-north transitional features of ancient and famous trees， i.e.， the components of the temperate zone dominate and the components of the tropical zone are extraordinarily rich. 4） The ancient and famous trees are in good health on the whole， and the weak growth vigor is mostly resulted from the negative artificial intervention. The study would provide science-based references for regional greening/afforestation and the establishment of urban forest ecosystem.

Keywords：ancient and famous tree， spatial distribution， resources composition， Lianyungang City

古樹名木具有极高的生态保护、历史文化、科学研究和旅游观赏价值[1] ，可以为区域自然地理变迁、植被区系演变和生物多样性保护等方面的研究提供重要参考[2] 。古树名木是区域地带性森林构成的重要指示物种，在区域绿化中具有不可替代的作用。当前，关于古树名木的研究相对较多，主要集中在生长现状分析[1，3] 、调查统计[4-6] 和管理保护[7-8] 等层面，对于古树名木指导地区绿化方面的研究相对较少。

连云港市独特的自然条件使区域内生物多样性丰富，境内的云台山更是不可多得的植物宝库[9] 。……