The thesis discusses the important meaning for promoting vertical city afforesting activity. In light of current domestic city greening problems,it analyzes vertical city afforesting principles,styles and component factors,puts forward vertical city afforesting suggestions,and finally points out that:vertical city afforesting is a new kind of greening design form for strengthening green land volume and quality on the basis of keeping original city plants.%论述了城市中推行立体绿化的重要意义，针对当前我国城市绿化存在的问题，分析了城市立体绿化的原则、形式及组成要素，提出了发展城市立体绿化的建议，指出立体绿化是在保持城市原有基础上，增强城市绿地总量和质量的一种绿化设计新形式。
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