【摘要】 在对东营市建成区城市绿地木本植物调查的基础上,研究木本植物物种多样性以及物种多样性与城区分布特征之间的关系.结果表明:绿地木本植物种类共计47科80属166种,乔灌树种比例为1∶0.61,数量比例为1∶0.56;常绿、落叶树种比例为1∶4.2,数量比例为1∶2.03;乡土树种与外来树种比例为1∶3.在3个城区中, Margalef物种丰富度指数、 Simpson多样性指数、 Shannon-Wiener指数结果从大到小排序都为东城区、西城区、技术开发区; Pielou均匀度从大到小排序为技术开发区、西城、东城区,东城区木本植物物种多样性最高,对其他城区有指导和示范作用.基于调查结果提出建议:优化绿地木本植物应用;提高优势植物物种的种类和数量;提升城市绿地木本植物物种多样性水平.更多还原

【Abstract】 Based on an investigation of woody plants in the urban green space of Dongying built-up area, the diversity of plant species in this area and its relationship with the distribution characteristics in the urban area were studied. The results showed that there were 47 families, 80 genera and 166 species of woody plant species in the study area, the ratio of arbor and shrub species being 1∶0.61 and the number ratio 1∶0.56, the ratio of evergreen and deciduous tree species 1∶4.2 and the number ratio 1∶2.03, and the ratio of native tree species to exotic tree species 1∶3. In the three urban areas studied, the order of Margalef species richness index, Simpson diversity index and Shannon-Wiener diversity index was Dongsheng(east city) district > Xicheng(west city) district > Technology Development Area. Pielou evenness index appeared in the order of Technology Development Area > Xicheng district > Dongcheng district. Dongcheng district might play a role of guidance and demonstration for the other urban areas owing to its high woody plant species diversity. Based on the survey results it is recommended that the application of woody plants in green space should be optimized;the kinds and quantity of dominant plant species improved; and the diversity of woody plants in urban green space enhanced.更多还原