Research On The Urban Green Space Layout Structure Model Of State-level New Areas

With the carbon neutrality and peaking carbon dioxide emissions being written into the focus of work in 2021,carbon peaking and carbon neutrality have gradually become important issues of social concern.The construction of Beautiful China depends on the improvement of the urban ecological environment,and the high-quality development of urban green spaces is conducive to improving urban ecological resilience and stabilizing the urban ecological background.Demonstrative and driving national-level new districts have become the main way of urban expansion under the rapid social and economic development.Urban green space is constantly being invaded and gradually transformed into scarce resources.There are many differences between the urbanization development of cities and new districts.Contradictions,explore the difference between urban green space and urban green space in new districts,analyze the relationship between the structural elements of urban green space layout and the overall pattern,refine the influencing factors of urban green space,and build a structural model of urban green space layout suitable for national-level new districts.The key to make urban green space respond to the impact of urban problems and maximize ecological benefits.Guiding and maintaining the healthy development of the urban green space layout structure will help the overall improvement of the ecological benefits of urban green space in the urban built environment.This paper takes 18 national-level new districts with a certain construction scale as the research object,and proposes a classification and identification method of urban green space land composition based on the real construction environment of the new district.By defining the concept of urban green space studied in this paper,the urban green space is divided into four main types: forest land,grassland,cultivated land and water body.The study selected 18 remote sensing images of national new districts in 2017 and 2018,and used ENVI software and Arc GIS platform to identify and measure the urban green space of national new districts.Combining the natural conditions of the national new districts,the construction sequence,the corresponding indicators of the current green space composition types and the current green space structure,it is proposed that the current national new districts have insufficient total amount of urban green space and uneven distribution of composition types,and the urban green space layout structure is ecological Corridors have existing problems such as fragmentation,isolated and scattered green patches and no networked structure.Secondly,by summarizing the green space layout structure of cities at home and abroad,dividing and comparing the green space layout structure patterns of typical cities at home and abroad,summarizing the ring-shaped green belt,the network of green corridors,and the mosaic of wedge-shaped green spaces.There are four basic modes:urban green heart mode and urban green heart mode.Through remote sensing technology and Arc GIS platform,combined with the technical path of the morphological spatial pattern analysis method,the selected 18 national-level new urban green spaces are identified as a whole and the structural elements of the urban green space are extracted,so as to facilitate the construction of the national-level new urban green space The layout structure pattern of the space.Finally,in view of the main problems existing in the current urban green space of the national-level new area,analyze the core area,patch fragmentation and connectivity of the urban green space of the national-level new area,and analyze the space structure of the urban green space of the national-level new area.The morphology,the extracted urban green space layout structural elements are combined with the analysis results of the7 types of landscape types in the morphological space pattern analysis method,and the national green space of the new urban area is proposed based on the characteristics of the extracted urban green space layout structure patterns at home and abroad The three main patterns of the layout structure,namely the centralized green core combined structure mode,the corridor network radial layout structure mode,and the ecological base composite layout structure mode,are verified by the specific overall planning scheme of the new district and the constructed mode.Based on remote sensing image data and MSPA morphological spatial pattern analysis method,this paper measures and recognizes the urban green space pattern of national new districts from two perspectives of qualitative assessment and quantitative identification,and uses the results of MSPA analysis to construct urban green spaces of national new districts.Layout structure optimization model.Through the combination of the quantitative analysis of the morphological spatial pattern method based on remote sensing data and the construction of the urban green space layout structure model,and the construction of ideas based on the urban green space layout structural elements,we try to build a national-level new district urban green space layout structure model,It is of great significance to the green and intensive urban ecological development of national new districts.