【摘要】 采用典型样方法,调查重庆市核心区半自然林地的物种组成及群落特征。结果表明,物种共计150种,分属于132属74科;有5个植被型,14个群系,植物群落分布以落叶阔叶林及常绿落叶阔叶混交林为主,分别占调查群落的36.7%和31.6%;生活型谱以高位芽为主,占48.23%,乔木和常绿落叶树种比为1∶1.1;不同样地多样性指数变化不大,常绿阔叶林多样性指数最低;群落中更新能力较强的树种有香樟、梧桐、女贞、栾树、麻栎等,更新不足的树种有马尾松、刺桐;可推广于城市森林建设的植物有香樟、栾树、梧桐、麻栎、刺槐、胡颓子、黄荆等。并为城市风景林构建和城市生态恢复林构建推荐了优势群落模式。更多还原

【Abstract】 This paper applies plot method to study the species composition and community characteristics of semi- natural communities in core districts of Chongqing. The result shows that there are altogether150 species belonging to 132 genera and 74 families respectively,5 vegetation types and 14 plant formations. The distribution of plant communities is dominated by deciduous broad- leaved forest and mixed evergreen- deciduous broad- leaved mixed forest,which accounting for 36. 7% and 31. 6% respectively of the surveyed communities. The main life form spectrum is Phanerophytes,which accounted for48. 23%. The proportion of macrophanerophytes and evergreen- deciduous trees is 1 ∶ 1. 1. The species diversity index in different places has no clear difference,and the species diversity index of the evergreen broad- leaf forest is the lowest of all vegetation types. In the community,species with strong renewable capacity are Cinnamomum appelianum Schewe,Firmiana simplex( L.) W. Wight,Ligustrum lucidum Ait.,Koelreuteria bipinnata Franch.,Quercus acutissima Carruth; species which lack of renewable capacity are Pinus massoniana Lamb.,Erythrina variegata Linn.; species can be promoted for ur ban forest construction include C. appelianum Schewe,K. bipinnata Franch.,F. simplex( L.) W. Wight,Q. acutissima Carruth, Robinia pseudoacacia Linn., Elaeagnus pungens Thunb., Vitex negundo Linn.,etc.更多还原