Assessing Park Accessibility Based on a Dynamic Huff Two-Step Floating Catchment Area Method and Map Service API

Park green space (PGS) is an important part of urban ecosystem and green infrastructure, and the ease of access to PGS is closely related to the health of residents. A growing number of studies have attempted to identify accessibility disparities, but results have varied because of the travel mode c...

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Bibliographic Details
Published inISPRS international journal of geo-information Vol. 11; no. 7; p. 394
Main Authors Wang, Huimin, Wei, Xiaojian, Ao, Weixuan
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.07.2022
Subjects
Accessibility
Application programming interface
Bivariate analysis
Carbon sequestration
Catchment area
Catchment areas
Compression
dynamic travel mode
Floating
Green infrastructure
Huff 2SFCA
map service API
Measurement methods
Methods
Modal choice
park green space
Population
Public transportation
Supply & demand
Traffic congestion
Transportation planning
Travel modes
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Summary:Park green space (PGS) is an important part of urban ecosystem and green infrastructure, and the ease of access to PGS is closely related to the health of residents. A growing number of studies have attempted to identify accessibility disparities, but results have varied because of the travel mode choice and the measurement method. This study proposes a dynamic Huff two-step floating catchment area (H2SFCA) method based on map service API (Application Programming Interface) to assess the accessibility of PGS, with the Gini coefficient and bivariate local Moran’s I used to analyze accessibility equity. Results show that: (1) driving and biking modes have more significant spatiotemporal compression effects than dynamic modes, public transit, and walking mode. (2) The accessibility values and spatial patterns vary significantly by travel mode. The PGS availability pattern at the local level is more uneven than the distribution of accessibility at the regional level. In comparison with dynamic travel modes, the accessibility values for the single travel mode are more likely to be overestimated or underestimated. (3) The PGS accessibility by the dynamic modes generally has better spatial equity and residents can select suitable travel tools to acquire more equitable park services. In addition, there is a significant accessibility difference between dynamic driving-based mode and dynamic transit-based mode in four subdistricts, which are mainly located in the south of Tianhe District. The public transport facilities linking parks in these areas need to be optimized. This study further improves the accessibility evaluation method, with the findings conducive to the implementation of refined PGS planning and management.
ISSN:2220-9964
2220-9964
DOI:10.3390/ijgi11070394