南宁市西乡塘区古树空间分布特征分析  

Analysis on Spatial Distribution Characteristics of Old Trees in Xixiangtang District in Nanning

作　　者：李瑞岚 张文柳 李嘉亮 罗应华[1] 陆珍先 林建勇[3] Li Ruilan;Zhang Wenliu;Li Jialiang;Luo Yinghua;Lu Zhenxian;Lin Jianyong(College of Forestry,Guangxi University,Nanning,Guangxi 530004,China;Guangxi State-owned Gaofeng Forest Farm,Nanning,Guangxi 530001,China;Guangxi Forestry Research Institute,Nanning,Guangxi 530002,China)

机构地区：[1]广西大学林学院,广西南宁530004 [2]广西壮族自治区国有高峰林场,广西南宁530001 [3]广西壮族自治区林业科学研究院,广西南宁530002

出　　处：《广西林业科学》2024年第5期636-643,共8页Guangxi Forestry Science

基　　金：国家自然科学基金项目(31200330);广西林草种质资源普查与收集(桂林科字[2021]第34号)。

摘　　要：为给南宁市西乡塘区古树保护与利用提供参考,采用ArcGIS软件分析西乡塘区古树空间分布特征及其影响因素。结果表明,西乡塘区共有古树786株,隶属于13科14属19种,优势种为高山榕(Ficus altissima)和榕树(Ficus microcarpa),以乡土植物和常绿阔叶树为主,三级古树最多;古树分布呈较强空间聚集性,古树主要分布在石埠街道、心圩街道和安宁街道南部;古树在平坡、阴坡、耕地和人口稀疏区分布较多,且离水系越近,古树分布越多;影响古树分布的因素表现为人口密度>用地类型>水系距离>坡度>坡向。对西乡塘区古树保护提出一些建议,包括在古树数量丰富区域创建古树主题公园,在古树数量稀缺区域加强古树养护,在耕地区域加强古树监管,在城镇区域减少硬化地面对古树的影响;提高公众对古树的保护意识;利用现代技术监测古树生长状况;限制距水系0.5 km范围内土地开发程度等。In order to provide references for protection and utilization of old trees in Xixiangtang district in Nanning,ArcGIS software was used to analyze characteristics and influencing factors of spatial distribution of old trees in Xixiangtang district.Results showed that there were 786 old trees in Xixiangtang district belonging to 13 families,14 genera and 19 species,dominated by native plants and evergreen broad-leaved trees.Dominant species were Ficus altissima and Ficus microcarpa.Number of tertiary old trees was the most.Distribution of old trees showed strong spatial aggregation,and old trees were concentrated in Shibu streeet,Xinxu street and southern Anning street.More old trees distributed in flat slopes,shady slopes,cultivated lands and sparsely populated areas.There were more old trees in places closer to waters.Factors influencing distributions of old trees followed order of population density>land use type>distance to water>slope gradient>slope aspect.Some suggestions for protection of old trees in Xixiangtang district were proposed,including creating themed parks of old trees in areas where old trees were abundant,strengthening maintenance of old trees in areas where old trees were scarce,strengthening supervision of old trees in cultivated lands,reducing impacts of hardened surfaces on old trees in urban areas,raising public awareness for protection of old trees,monitoring growths of old trees by modern techniques,and limiting development degrees of lands within 0.5 km of waters.

关 键 词：空间分布 古树保护 GIS 

分 类 号：S788[农业科学—林学]