Construction of urban ecological green space and ways to explore the theoretical basis

Urban ecological green space is not only the city infrastructure,but also is an important part of the city ecological environment.It plays an irreplaceable role in protecting ecological balance,improving urban ecological environment and creating a good living environment.The quality of urban ecological green space construction has become an important indicator of of a city's development condition and an important criterion to judge whether it reaches the level of the garden city construction.The article elaborates the theoretical basis of urban ecological green space construction: ecological theory,landscape ecological theory and sums up urban ecological green space construction principles:ecological balance,ecological niche and species diversity.In addition,the article puts forward the ways of city ecological green space construction from the aspects of green plaque build,green gallery building and urban ecological green network system.