Accessibility Evaluation of Park Green Space in Tianjin Based on an Improved Multi-mode Two-Step Floating Catchment Area Method
The spatial configuration rationality of park green space is of great significance to urban planning and construction and residents'lives.Taking the central urban area of Tianjin as an example,the travel time for various transport modes is obtained based on the Amap API data,the improved multi-mode two-step floating catchment area method is used to calculate the accessi-bility of park green space at the scale of residential areas,and the distribution characteristics of park green space under different transport modes are analyzed.Moran s I and bivariate spatial autocorrelation are used to analyze the differentiation patterns of accessibility and the causes.The results are as follows.①The overall distribution of park green space accessibility in the central urban area of Tianjin shows a trend of decreasing from southwest to northeast.The accessibility of walking,bus,and driving are significantly different.②The spatial agglomeration characteristics of park green space accessibility in the central urban area of Tianjin are similar to their spatial distribution characteristics.Low-low agglomeration of residential areas has the highest pro-portion.③The supply of park green space in the southwestern region exceeds the demand,and the park green space in the northeastern region is in short supply,which urgently needs further improvement.The research has enriched the evaluation case of urban park green space accessibility.The improved multi-mode two-step floating catchment area method can be applied to the layout and planning of urban park green space,and can also provide a reference for the accessibility analysis of other geograph-ical phenomena.
park green spaceaccessibilitymultiple transport modesAmap APITianjin
万方数据
维普
