Study On The Correlations Between Shenzhen Urban Sound Environment Index And Ecological Urban Design Factors

China is in an era of increasing urbanization at present.With the development of urbanization,there is lots of changes and adjustments in urban function,environment,ecology,transportation and other aspects.People's demand for urban space environment has changed from the initial satisfaction of using function to the pursuit of environmental quality,and it is crucial to create a high-quality urban space environment.Ecological urban design based on ecological theory emphasizes the coordinated development of human and nature,human and society,and it is an inevitable trend of urban design to improve the quality of urban space while ensuring the ecological nature of the city.However,nowadays,urban environmental quality is deteriorating,especially in urban acoustic environment quality represented by urban noise.Therefore,it is essential to create a quiet and comfortable sound environment at present.Shenzhen is a typical ecological city with good natural conditions,and its urban design is in the forefront of China as developing in a rational way.The research focuses on Shenzhen,and discusses the relationship between ecological urban design factors and urban sound environment.This paper based on the data of Shenzhen urban soundscape database established by Harbin Institute of Technology Soundscape Research Group,and combined with the distribution of artificial built environment and natural environment in Shenzhen city and selects the representative research samples with typical spatial environment,and extracts the sound environment data of the research samples.According to the characteristics of urban ecological environment,the ecological environment of Shenzhen is divided into three categories: natural ecological area,natural ecological peripheral area and artificial built area.Combined with the patch-corridor-matrix model in landscape ecology theory,the space environment included in the three types of regions is classified into different types of patches and corridors.The acoustic features of patches and corridors in different areas are analyzed from three aspects: sound lev el,natural sound proportion and mechanical sound proportion.The sound features of patches and corridors in different areas are analyzed from three aspects: sound level,natural sound proportion and mechanical sound proportion.The sound environment characteristics of patches and corridors in different areas were analyzed from three aspects: sound level,natural sound ratio and mechanical sound ratio.Using the statistical analysis method to sort out the indicators of ecological urban design factors in different types of patches and corridors.Through the correlation analysis,the influence of different ecological urban design factors on the sound environment indicators of patches and corridors is clarified.It is found that urban sound environment has different characteristics with the change of urban spatial functionality and ecological environment.Different types of ecological urban design factors have different degrees of correlation with the sound environment indicators,and have a significant impact on some sound environment indicators.