Assessing equity in park accessibility using a travel behavior-based G2SFCA method in Nanjing, China

Li, Zhiming; Fan, Zhengxi; Song, Yan; Chai, Yangbo

doi:10.1016/j.jtrangeo.2021.103179

Cited by 67 publications

(47 citation statements)

References 88 publications

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“…The spatial accessibility of facilities is a crucial criterion for assessing the rationality of public service layout [70]. The supply-demand ratio indicates the magnitude and convenience of inhabitants' access to public service amenities, and it may be used to visualize the spatial distribution of facilities in equilibrium [71].…”

Section: Calculating the Spatial Accessibility Of Elderly Care Facili...mentioning

confidence: 99%

Study on Spatial Distribution Equilibrium of Elderly Care Facilities in Downtown Shanghai

Huang

Gong

White

2022

IJERPH

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With the growing challenge of aging populations around the world, the study of the care services for older adults is an essential initiative to accommodate the particular needs of the disadvantaged communities and promote social equity. Based on open-source data and the geographic information system (GIS), this paper quantifies and visualizes the imbalance in the spatial distribution of elderly care facilities in 14,578 neighborhoods in downtown (seven districts) Shanghai, China. Eight types of elderly care facilities were obtained from Shanghai elderly care service platform, divided into two categories according to their service scale. With the introduction of the improved Gaussian 2-step floating catchment area method, the accessibility of two category facilities was calculated. Through the global autocorrelation analysis, it is found that the accessibility of elderly care facilities has the characteristics of spatial agglomeration. Local autocorrelation analysis indicates the cold and hot spots in the accessibility agglomeration state of the two types of facilities, by which we summarized the characteristics of their spatial heterogeneity. It is found that for Category−Ⅰ, there is a large range of hot spots in Huangpu District. For Category−Ⅱ, the hot-spot and cold-spot areas show staggered distribution, and the two categories of hot spot distribution show a negative correlation. We conclude that the two categories are not evenly distributed in the urban area, which will lead to the low efficiency of resource allocation of elderly care facilities and have a negative impact on social fairness. This research offers a systematic method to study urban access to care services for older adults as well as a new perspective on improving social fairness.

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Section: Calculating the Spatial Accessibility Of Elderly Care Facili...mentioning

confidence: 99%

Study on Spatial Distribution Equilibrium of Elderly Care Facilities in Downtown Shanghai

Huang

Gong

White

2022

IJERPH

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“…where R j is the supply/demand ratio of the boarding/disembarking points for the POI points in the range. Equation ( 6) is a commonly used Gaussian distance decay function and is widely used with the 2SFCA method [32][33][34].…”

Section: Identification Of Travel Origins and Destinationsmentioning

confidence: 99%

“…The value determined after the attenuation calculation is noted as access weigh t W ij for visit i of j (Equation ( 7)). The attenuation is done using the Gaussian attenuation function mentioned above, which has a normal distribution of the computed results and is widely used in various calculations regarding distance attenuation [32][33][34].…”

Section: Identification Of Travel Origins and Destinationsmentioning

confidence: 99%

A Big Data-Based Commuting Carbon Emissions Accounting Method—A Case of Hangzhou

Xue

Xia

et al. 2022

Land

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Commuting carbon emissions are an essential component of urban carbon emissions, and determining how to reduce them is an area of great debate among researchers. The current research lacks a tool and instrument that can extensively account for residents’ commuting. Traditional methods are mainly based on questionnaire surveys, which have low accuracy at spatial and temporal aspects. High accuracy carbon emission accounting methods can effectively assist urban planning and achieve precise urban emissions reductions. This study applies a taxi commuting carbon emissions accounting method divided into two main steps. Firstly, the carbon emissions of taxi trajectories are calculated using taxi trajectory data and a carbon emission calculation method developed based on VSP. Secondly, the taxi trajectory and POI data are used to filter the commuter trajectory with the help of a two-step moving search method. In this way, the taxi commuting carbon emissions were obtained. Then, the spatial distribution characteristics of residential taxi commuting carbon emissions are analysed by spatial autocorrelation tools, which could facilitate low carbon zoning management. A typical working day in Hangzhou was selected as the research object of this study. The results show that (1) morning peak commuting carbon emissions in the main urban area of Hangzhou reached 2065.14 kg per hour, accounting for 13.73% of all taxi travel carbon emissions; and evening peak commuting carbon emissions reached 732.2 kg per hour, accounting for 4% of all taxi travel carbon emissions; (2) At the grid level, the spatial distribution of commuting carbon emissions in Hangzhou shows a single central peak that decays in all directions; and (3) The results at the resident community scale show that urban public transport facilities influence resident community commuting carbon emissions. In areas such as at the urban-rural border, resident community commuting carbon emissions show high levels of aggregation, and in the main urban area, resident community commuting carbon emissions show low levels of aggregation. This study not only provides a new method of commuting investigation but also offers constructive suggestions for future carbon emission reduction under Hangzhou’s urban planning.

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“…In recent years, the use of big data to modify traditional processed data has emerged as a new trend in geographic research [30], allowing for a finer scale of research. Guo [31,32] uses mobile phone signaling data to estimate area population density, but the cost of acquiring data is too high. The data on the number of households by the Anjuke platform can reflect the static population distribution and the precise demand for parks.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Park Accessibility Based on Improved Gaussian Two-Step Floating Catchment Area Method: A Case Study of Xi’an City

Xie

Sun

et al. 2022

Buildings

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Park accessibility plays a critical role in evaluating the quality of park construction. However, the conventional accessibility model ignores non-spatial factors, so it is crucial to use more complex methods for evaluating park accessibility. This study aims to establish an improved Gaussian-based two-step floating catchment area method (iG2SFCA) based on Point of Interest (POI), population data and Baidu map, to measure the park accessibility of various travel modes (walking, riding and driving modes) in 5-min, 15-min and 30-min scenarios, and location quotient is used to assess spatial equity of parks. The results show that: (1) There are clear disparities between park supply and population demand at the street level. (2) iG2SFCA evaluates the level and attractiveness of the park comprehensively. It is more sensitive to identifying accessibility, which can lead to a more realistic assessment of Park accessibility. (3) Under the three modes of transportation, the accessible area of the park increases with time, and the accessibility difference between residential areas is the smallest under the 30-min scenario. Overall, accessibility of park is relatively high; however, there is an obvious tendency for the accessibility level to decrease from the park as the center. The areas with poor accessibility appear in the north and southeast of the research area. (4) There are regional variances in the spatial equity of parks within Xi’an 3 City, and the park configuration needs to be optimized. These findings can provide theoretical support for further optimizing the layout of park in Xi’an in order to improve the spatial equity of urban parks.

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Assessing equity in park accessibility using a travel behavior-based G2SFCA method in Nanjing, China

Cited by 67 publications

References 88 publications

Study on Spatial Distribution Equilibrium of Elderly Care Facilities in Downtown Shanghai

Study on Spatial Distribution Equilibrium of Elderly Care Facilities in Downtown Shanghai

A Big Data-Based Commuting Carbon Emissions Accounting Method—A Case of Hangzhou

Evaluation of Park Accessibility Based on Improved Gaussian Two-Step Floating Catchment Area Method: A Case Study of Xi’an City

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