This is a beautiful ornamental tree species, a relict originating from millions years ago which can spread widely and can be planted in urban areas. Because of tree shape, unconventional shape of leaves and their autumn colour, this tree is particularly attractive. Its main advantage, however, is high resistance to adverse conditions prevailing in city areas, mainly to air pollution. The gingko tree is also resistant to air deficit in soil, to frost and fire. Thus, actions should be taken to introduce this species quickly in city areas.
The rapid increase in the concentration of atmospheric carbon dioxide may exert a substantial impact on the biosphere. The paper presents the effects of elevated CO₂ concentration on the growth of tree species on the base of literature data. Both physiological responses as weil as changes in growth and development of plants are discussed. Furthermore, water and nutrient requirements of trees grown under high CO₂ are considered. Practical aspects of the problem are also included.
The article presents the results of cataloguing trees and shrubs on the area of Miedzychód, Wielkopolska. Multifactor characterization of the dendroflora included spatial diversity of its richness (with reference to basic squares and complexes of spatial utility) and the analysis of participation of species groups distinguished upon their origin, as well as systematic and syntaxonomic status of plants and plant communities.