Study On The Application Of Three-dimensional Afforestation In North Cities

With the rapid development of industrialization and urbanization, the increasingof urban population, the expansion range of city construction and the rising reinforcedconcrete building, it causes more and more environmental pollution and the urbanenvironment closely related to human survival environment suffered the seriouspersecution. Environmental pollution is paying more and more attention. In moderncities, protecting and creating a good urban environment has become an important taskfor the construction of modern cities. Yet our urban area is finite, which has not enoughspace for city greening development. It's not likely to expand the planar greening areasto improve the urban ecological environment, and we must find a new method toimprove urban ecological environment in the limited greenbelt area. Thethree-dimensional afforestation has come into being in this context. Therefore, by theway of urban three-dimensional greening buildings and roads is an effective measure ofrelieving the less urban greening areas and improving the city green coverage.This paper focuses on the research of three-dimensional afforestation in thenorthern city especially in xi,an,in this paper the application of correct understanding ofthe connotation of three-dimensional afforestation,based on the characteristics of fromstereo, materials,form, function and xi,an three-dimensional afforestation situation,analyses the advantages and xi'an stereo green barriers, development level, developmenttrend and the existing problems,for xi'an three-dimensional afforestation and the weak link forward pointed measures and hope for future development in xi'anthree-dimensional afforestation to provide some useful information.In the center part of my paper, through analyzing four landscape types of thethree-dimensional greening (the case of three-dimensional greening of Xi'an new urbanview and Xi'an underneath type of mutual overpass and the viaduct, the case of BeijingTonghui Park's roof garden) with implementation of project and theory achievements, Iput forward some specific designing methods and theories to improve the effect ofXi'an three-dimensional afforestation and the countermeasures study on development ofthree-dimensional greening for Xi'an, that is, the development of Xi'an characteristicgreening, which includes the logo advertisements, adaptability, characteristics,lamplight, systematicness.