The Forest Landscape Transformation Of Beijing Olympic Forest Park Based On Optimizing Air Quality

In today’s context,accelerating the reform of the ecological civilization system and building a beautiful China have become an important indicator of urban development.As an important part of the ecological environment,the control of air pollution is an important link in the construction of ecological civilization.As the only system with self-purification function in cities,green space is the core component of urban ecosystem.Previous studies have shown that green space system has a certain abatement effect on air pollution.Therefore,in order to explore optimal design method of air quality in urban forest park in Beijing Olympic forest park as the research object of this research,by combining the vegetation structure factor of ecological cell mapping method as a guide,analysis study related concepts and theoretical research,through on-the-spot investigation,monitoring statistics,explores the green vegetation structure type dust detentions and its corresponding relation,and the dust detentions greenbelt area size and their relationship.Based on the research conclusion,combined with the analysis and study of relevant practical cases at home and abroad,this paper discusses the dust-oriented urban forest park reconstruction design strategies and methods.Finally,based on the conclusion of the study and the summary of the transformation design strategy of the urban forest park with dust retention as the orientation,the practice design was carried out with the Olympic forest park as the reconstruction site,which provides theoretical basis and case reference for the optimization and construction of the urban forest park with dust retention in the future.The main results of the study are as follows:1.Through the city of chengdu longquan mountain forest park,New York’s central park,Beijing area one million mu of afforestation project and green space construction of wuhan iron and steel factory to carry on the case study,draw the conclusion: compared with improving urban air environment and forest parks in general more focuses on the design of the recreational experience,enhance biological diversity,etc.,green design oriented dust detention often focused on industrial pollution area,or focus on large scale afforestation plan,few large forest park in the city within the scope of practice of the case.2.In terms of the influence of vegetation structure type on the dust catching ability of green space,in urban forest park,single-story closed mixed forest has the stronger dust catching ability,followed by single-story closed broad-leaved forest,semi-closed broad-leaved forest,semi-open lawn,and open lawn.The dust catching ability of these three types decreases successively,with hard site being the worst.3.In terms of the influence of area factor on the dust catching ability of green space,the dust catching ability of woodland space will increase with the increase of green space area,but the change trend of the dust catching ability of open and semi-open lawn green space and hard space is opposite.The increase of area will lead to the increase of the concentration of airborne particles in the site.4.On the basis of experimental research conclusions,discusses the dust detention oriented strategy for the design of urban forest park transformation,choose to basis,discussed the reconstruction of discussion and put forward the "overall analysis,field research,partition resizing,landscape,relying on the existing forest resources" design strategy,at the same time,this paper discusses the principle of the division of this kind of design.5.To study space-Beijing Olympic forest park as an example the design practice,on the forest park landscape design through to optimize air quality for the purpose of upgrading plan,made from the plant use,landscape shape and so on practice,can be used as a dust as the guidance of the retrofit design of the urban forest park class reference and thinking of the practice of project.Monitoring to sum up,based on field investigation and data analysis,explores the dust detentions of urban forest park green space respectively with area and the relationship between vegetation structure,at the same time,discusses the optimization of air quality oriented forest park design principles and strategies,and conducted the practice operation,for the future of urban air pollution control is put forward the corresponding theoretical basis and solutions.