安康城市绿地乔木物种组成及多样性调查张淑兰1,2,景张欣1,王丽1,2,王亚萍1,2,韩勇1,2(1.安康学院旅游与资源环境学院,安康725000;2.安康学院陕西省科协院士专家工作站,安康725000)摘要:城市绿地物种组成及多样性保护,对城市生态环境建设及维持其生态系统服务功能具有重要意义。文章对安康市公园、广场和附属绿地中8个代表性城市绿地的乔木物种进行调查,统计和分析了主要城市绿地的树种组成、重要值及多样性。结果表明:安康市城市绿地乔木共40科77属100种,以香樟、紫薇、桂花为优势树种,且具有较高的重要值;各城市绿地相似性系数为0.26~0.54;从调查样地看,以校园绿地(A6和A7)乔木物种多样性最高,安康大道(A8)则最低,其他居中;但从绿地类型看,Margalef丰富度指数为附属绿地(9.19)>公园绿地(7.15)>广场用地(6.24);Shannon-Wiener指数为公园绿地(3.24)>附属绿地(3.13)>广场用地(3.04);Simpson指数和Pielou均匀度指数均为公园绿地(0.79)>广场用地(0.78)>附属绿地(0.70)。关键词:安康市;城市绿地;园林树木;物种多样性中图分类号:X176文献标志码:ADOI:10.16803/j.cnki.issn.1004−6216.202209005InvestigationonspeciescompositionanddiversityoftreesofurbangreenspaceinAnkangZHANGShulan1,2,JINGZhangxin1,WANGLi1,2,WANGYaping1,2,HANYong1,2(1.SchoolofTourism,ResourcesandEnvironment,AnkangUniversity,Ankang725000,China;2.AcademicianandExpertWorkstationofShaanxiAssociationforScienceandTechnology,AnkangUniversity,Ankang725000,China)Abstract:Thespeciescompositionanddiversityprotectionofurbangreenspaceareofgreatsignificancetotheconstructionofurbanecologicalenvironmentandthemaintenanceofitsecosystemservices.Thespeciesoftreesin8representativeurbangreenspacesincludingparks,squares,andaffiliatedgreenspacesofAnkangcitywereinvestigated,andthecomposition,importancevalue,anddiversityoftreespeciesinmainurbangreenspaceswerestatisticallyanalyzed.Theresultsshowedthattherewere100speciesoftreesbelongingto77generaand40familiesintheurbangreenspaceofAnkang.Camphor,cracermyrtle,andosmanthusfragranswerethedominantspecieswithhighimportancevalues.Thesimilaritycoefficientoftheurbangreenspacerangedfrom0.26to0.54.Accordingtothesur...