Fig. 7

Tree species of the same tree diameter can differ considerably in crown size and required growing space. This is demonstrated for ¹⁾ Quercus nigra L., ²⁾ Platanus x hispanica Münchh., ³⁾ Carpinus betulus L., ⁴⁾ Tilia cordata Mill., ⁵⁾ Khaya senegalensis (Desr.) A.Juss., ⁶⁾ Fagus sylvatica L., ⁷⁾ Aesculus hippocastanum, ⁸⁾ Robinia pseudoacacia L., ⁹⁾ Alnus glutinosa [L.] Gaertn., ¹⁰⁾ Araucaria cunninghamii Aiton ex. D.Don, ¹¹⁾ Pseudotsuga menziesii [Mirb.], ¹²⁾ Abies alba Mill., ¹³⁾ Sorbus aucuparia L., ¹⁴⁾ Betula pendula Roth, ¹⁵⁾ Acer pseudoplatanus L., ¹⁶⁾ Abies sachalinensis Mast., ¹⁷⁾ Quercus petraea [Matt.] Liebl., ¹⁸⁾ Pinus sylvestris L., ¹⁹⁾ Larix decidua Mill., ²⁰⁾ Fraxinus excelsior L., ²¹⁾ and Picea abies [L.] Karst