【摘要】 【目的】为适应北京城市新定位新需求,更好的进行城市副中心公园绿地建设。【方法】对北京城市副中心大运河森林公园、减河公园、运河公园3个公园绿地植物群落进行抽样调查,分析不同公园绿地植物物种组成、应用频度以及物种多样性等。【结果】共记录大运河森林公园植物108种,隶属48科73属,减河公园植物55种,隶属26科44属,运河公园植物54种,隶属26科41属。大运河森林公园与减河公园植物种Margalef丰富度指数从大到小依次为草本层、乔木层、灌木层的趋势,运河公园从大到小依次为草本层、灌木层、乔木层。大运河森林公园Simpson指数和Shannon-Wiener多样性指数从大到小依次为草本层、乔木层、灌木层,减河公园与运河公园依次为乔木层、草本层、灌木层。大运河森林公园物种均匀度指数依次表现为乔木层略等于草本层、灌木层,而减河公园与运河公园为乔木层、灌木层略等于草本层,这表明乔木层植物较灌木层与草本层分布均匀。【结论】北京城市副中心公园绿地建设应加大灌木植物和乡土地被植物的应用,以构建物种丰富、结构稳定的植物群落,实现绿地生态效益综合提升。更多还原

【Abstract】 [Objective]To adapt to the new positioning and new needs of Beijing City and better construct the park green spaces of City Sub-center. [Methods]The typical plant communities of Grand Canal Forest Park, Jianhe Park and Canal Park in the Beijing City Sub-center were investigated by sampling survey, to analyze the plant species composition, application frequency and species diversity of different parks. [Results]The results showed that in total 108 plant species were found in Grand Canal Forest Park, belonging to 48 families and 73 genera; 55 plant species were found in Jianhe Park, belonging to 26 families and 44 genera; in total 54 plant species were found in Canal Park, belonging to 26 families and 41 genera. The Margalef richness index in Grand Canal Forest Park and Jianhe Park showed the pattern: herb layer > tree layer > shrub layer, while in Canal Park different pattern was found: herb layer > shrub layer > tree layer. The Simpson index and Shannon-wiener diversity index in Grand Canal Forest Park exhibited a pattern: herb layer > tree layer > shrub layer, which presented a pattern: tree layer > herb layer > shrub layer in the Jianhe Park and Canal Park. For species evenness index, a pattern, tree layer≈herb layer > shrub layer, was observed in Grand Canal Forest Park, and a pattern, tree layer > shrub layer≈herb layer, was found in Jianhe Park and Canal Park, indicating that the plant species distribution in tree layer was moremore even than shrub layer and herb layer. [Conclusion]The species of shrub and native ground cover plants should be increased in green space of Beijing City Sub-center to construct the plant community with rich species and stable structure, and to realize the comprehensive improvement of ecological benefits.更多还原