Analysis Of Green Space Layout Structural Feature Of Urban At Different Scales

Green space layout structure is the skeletal framework of urban green space system, it decides the form and the integrated function display of urban green space system, its rationality is very important to form a complete solid, organic green space system link. In view of present situation that cities and towns regardless of their scale and characteristics, build the green space according to unified specification and standard, this article take green space layout structure of different scale urban as research breakthrough point, based on the comparative analysis of urban form and green layout structure of different scale urban, try to Summarized the small urban green space layout structure features, and discusses a more reasonable method of constructing a small urban green space system.This paper first reviews the progress of the research and practice of urban green space system layout structure both home and abroad, summarized the development law, construction experience and future trends of urban green space system structure. Taking the theory of system, landscape ecology, sustainable development, public facility service as the instruction, this article refines the general component elements of green space layout structure and lists several common green space layout patterns, based on the analysis of the relationship between urban spatial scale, urban form and green layout, points out the impact of urban scale and urban morphology on green space layout structure.In the case study section, taking the large city Zhengzhou and small cities Yanling, Yuzhou as the research object, this paper uses method which combination of the investigation study and the contrastive analysis, summarizes differences between small city and large city on urban environment and urbanized level, and concluded the urban morphology feature of small city by comparing the urban morphology and development trends of difference scale cities, the characteristics is: urban layout structure is not enough compact and the group function is unitary; the urban land interlocks promiscuously, functional distinction is not obvious, and each construction land is uncoordinated; urban development generally showing the way of spread along transit traffic skeleton line or the city's main roads. On this basis, combining with Fieldwork situation and data which extracted from remote sensing, this article contrast Zhengzhou and Yanling, Yuzhou qualitatively and quantitatively from four elements which are green space form, green space components, structural index and service radius, points out the discrepancy of green space layout structure between difference scale cities, summarized the green space layout structure feature of small city, the characteristics is: green space layout is unsystematic, Take the spot and strip as the main form; green space type is simple, the function of different type green space existence overlapping; green space has more landscape fragmentation, the ecological benefit is not obvious; the distribution of park green space is uneven, its layout and the service radius don't match.Finally, based on the characteristics of small cities, this paper proposes some measures and recommendations how to plan city green space layout rationally, to guide future construction of the small city green space, in order to improve the urban environment and the residents quality of life, promote sustainable urban development.