The Study Of Urban Green Space System Layout Based On GIS

Urban green space as an important part of urban construction land, its bears important task inimproving the urban ecological environment, and the quality of life. From the perspective oflandscape ecology theory, introducing geographic information system (GIS), accessibility theory,the Huff model, this research evaluated Layout features and specific issues of Guanhaiwei Town,Cixi City’s certain scale can be recreational green space, it provided important evidence to makethe study area green space layout adjustments.Research process is: by collecting remote sensing image data and related data in the studyarea, in combination with field investigation, green space classification interpreting remotesensing image to get study area green space information; Using GIS software can establishrecreational green space distribution, traffic network, the grid and grid point Populationdistribution of grid points geospatial database; According to the principle of accessibility, use theHuff model to calculate the attractive value between urban green space and travel point, study thegreen space layout, the service ability and the relationship between urban residents demand; Basedon the theory of landscape ecology as the study area green space planning put forward rationallayout adjustment Suggestions; The application of GIS spatial autocorrelation analysis tools andHuff model analysis before and after optimization results.Research results show that:(1) the Guanhaiwei town green space layout is disequilibrium, mostly concentrated in theMidwest, the quantity of green space area is many and each area is small, its service scope is largeand with expectations of the large number of tourists visiting; Southern town of scenic area greenspace, the amount is little and the area is large, the scope of its services and expect fewer visitingtourists; Northern town is short of green space resources.(2) according to the principle of "patch-gallery-matrix", do function and spatial structureplanning of the study green area, established the "one centre, two parts, six horizontal and sevenvertical, multi-point " green space landscape ecological pattern.(3) do overall spatial autocorrelation analysis of green space area before and after planning,the calculation results Moran ’s value were1.8and1.19, range ability is34%, it indicate that gather phenomenon significantly decreased after planning, green space layout is more rational andbalanced after planning.(4) to use huff model comparative analysis green space before and after the planning, greenspace service increased from the status quo the maximum8311m to12504m after the planning,the average increased by the status quo of4228m to5624m after the planning, the growth rate of50.4%and33%respectively. Service scope and attract visiting number all have certain promotionafter planning, layout optimization effect is obviousGIS and its analytical method play a roll in greenbelt layout adjustments that can not bereplaced by other technologies and play a larger potential applications in layout planning. Thisarticle will analysis combine qualitative and quantitative, to provide a more scientific means ofurban green space system planning.