德国是世界上定期举办大规模园林展最为频繁的国家之一,其持久的生命力与城市发展进程相适应,取得了显著的成果[1]。除了2年一届的“联邦园林展”(Bundesgartenschau,简称BUGA),德国每隔10年会将联邦展升级为一次世界性的“国际花园博览会”(Internationale Garten Ausstellung,简称IGA)[2]。历届国际花园博览会不仅展示了最新的花园 Germany is one of the most frequent countries in the world to hold large-scale landscape exhibitions on a regular basis. Its lasting vitality is compatible with the urban development process and has achieved remarkable results [1]. In addition to the biennial Bundesgartenschau (Bundesgartenschau, BUGA), Germany every 10 years will be upgraded to a federal exhibition “International Garden Exposition” (Internationale Garten Ausstellung, referred to as IGA) [2]. The previous International Garden Expo not only shows the latest garden