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1、扬州瘦西湖公园绿地空间格局与结构的量化研究王晓春1，2，周晓峰2，何小弟2，姚江潮3，吉琳3，马燕兰2(1.南京林业大学森林资源与环境学院，江苏，南京210037；2.扬州大学农学院，江苏，扬州225009；3.扬州市园林局，江苏，扬州225009)摘要：采用遥感图像判读和野外调查相结合的方法，定量分析了扬州瘦西湖公园绿地的空间格局及植物群落的物种结构。结果表明,扬州瘦西湖公园共有绿地斑块230个，而斑块形状指数≥1.50的绿地斑块为105个，绿地斑块形状受人为干扰程度较大。绿地景观类型较多，多样性指数亦较高。植被的生长状况良好；物种丰富，其中垂柳、桃、意杨、枫杨在树木株数和相对优势度上均占优
2、势；植被在高度和胸径上的分布均表现为具有向上发展的潜力，属于发挥生态效益的最佳时期。扬州瘦西湖公园的树种多度与基于叶面积的相对优势度之间无明显关联，数量上占优势的树种，其相对优势度不一定很高。植被树木株数与不同树高等级间的分布关系表现为略显上凸的曲线，随着树木高度级的增加，树木株数相应减少；树木株数分布与不同胸径等级间的关系也呈现类似的情况。关键词：公园绿地，空间格局，结构，绿量，人为干扰Quantitativeanalysisofurbanforeststructure:AcasestudyonSlenderWestLakeWANGXiao-chun1，2,ZHOUXiao-feng2,HE
3、Xiao-di2,YAOJiang-chao3,JILin3,MAYan-lan2(1.ForestResourcesandEnvironmentColl,NanjingForestryUniversity,Nanjing,210037,China;(2.AgricColl,YangzhouUniversity,Yangzhou225009,Chian;(3.GardensBureauofYangzhouCityinJiangsuProv,225009,China)Abstract:ThespatialfeaturesandattributedataofurbanforestsinSlende
4、rWestLakewereacquiredbyusingsatellitephotographsandfieldinvestigation.Throughselectingtheindicessuchaspatchsize,patchshapeindex,fractaldimension,diversityanddominanceindex,etc.,thelandscapepatternwasanalyzedandthefollowingresultswereachieved:1)thenumberofthepatchesintheresearchingareawere230,while10
5、5patchesthepatchshapeindexwaslargethan1.5.2)thetypeofthelandscapewasrich,andthediversityindexwashigh.Andaftersystemicandquantitativeanalysisofthespeciescompositionandspatialdistributionpatternofurbanforestcommunitybasedongeographicinformationsystem(GIS),thefollowingresultswereachieved:1)thevegetatio
6、nintheparkwasrichandinagoodcondition.Salixbabylonica,Prunuspersica,Populuseuramevicana‘I-214’andPterocaryastenopterawerethemainspeciesaccordingtotheirabundantindividualsandrelativedominance.Thespatialdistributionpatternofthisvegetationindicatedthatitwasinagrowinglevelandinthebeststateforecologicalbe
7、nefits;2)thetreespeciesrelativedominancebasedonvegetationquantityhadnodistinctrelationshipwiththespeciesabundance,andthespecieshavingabundantindividualsmighthavealowrelative11dominance;and3)thecurvedi
