Green Space Accessibility Research Based on GIS:Taking Shenyang as an Example

Urban population increases quickly along with the fast development of urbanization,and the environment improvement becomes one of the key factors for urban sustainable development.Green space can improve the urban environment and urban population's life quality.A method,assessment in Green space landscape accessibility,is proposed in this study based on potential energy model,taking population density,road distribution,land use and green space spatial patterns as parameters.The method emphasizes the spatial distribution pattern of green space and the valid service for urban people of green space.The green space of Shenyang city area was studied as a case.The result indicated that:①68.08% green space in the study area is in 1st level of the accessibility class,and 2nd,3rd,4th,5th levels of area are 21.64%,7.89%,2.00%,0.33% respectively.The spatial distribution pattern of green space is basically reasonable,and the green space may provide a good service for the people in the city.②The result also points out the construction and the direction of the green space in study area in future.③Green space landscape accessibility provides a useful index in the assessment of current situation and in city green space planning.