Evaluating Methodology for the Service Extent of Refugee Parks in Changchun, China

Li, Xiaoling; Xiu, Chunliang; Wei, Ye; He, Hong S.

doi:10.3390/su12145715

Cited by 7 publications

(5 citation statements)

References 35 publications

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“…Ye Mingwu et al, used a two-step floating catchment area method (2SFCA) to quantitatively study the accessibility status of parks for sheltering in the central city of Shanghai [22]. Population density indicators are usually used as an important element in the evaluation and planning of disaster preparedness and sheltered green spaces [23][24][25][26]. When a disaster occurs, elements such as the escape routes of residents, the evacuation capacity of the road network and the time costs to reach the RGS should be considered as important indicators for evaluating the service efficiency [27][28][29].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Chengdu is located in the middle of the North-South seismic zone, with the Longmenshan Fault Zone and Longquanshan Fault Zone passing through its territory, and is prone to moderate-to-strong earthquakes [45]. In Chengdu, there have been 20 earthquakes of magnitude 4 or higher, and eight earthquakes that have caused some damage and loss, including a 6.2 magnitude earthquake that occurred 50 km from downtown Chengdu on Land 2023, 12, 1460 4 of 22 24 February 1970 [46]. Besides earthquakes, other geological hazards such as landslides and mudslides have also posed a serious threat to the lives of citizens and resulted in huge economic losses for Chengdu [47].…”

Section: Research Areamentioning

confidence: 99%

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Refuge Green Space Equity: A Case Study of Third Ring Road on Chengdu

Cao,

Guo,

Fang

et al. 2023

Land

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As part of urban green space and emergency shelters, refuge green spaces (RGS) contribute significantly to the resilience of cities to natural disasters. In contrast, few studies have been conducted to assess the equity of RGS in relation to their planning layout. The presented research aims to quantitatively evaluate the equity of RGS within Chengdu’s Third Ring Road, and to propose corresponding optimization measures in conjunction with future green space planning. The rapid evacuation capacity of the RGS was evaluated by calculating the equity of the RGS in walking modes of 5, 10 and 15 min using an improved three-step floating catchment area method (3SFCA). Based on the results, RGS had an average equity in the study area. The total number of RGS within the Third Ring Road of Chengdu was insufficient, with an uneven spatial distribution and a structure to be optimized. The rapid evacuation capacity of RGS in 5 and 10 min needs to be further improved. The short-term resettlement capacity of RGS after 15 min was relatively good. Using Moran’s I index, the RGS equity and house price results were analyzed and no significant aggregation and polarization were observed. Following the evaluation, recommendations are made for optimizing and adding future RGS in accordance with Chengdu Green Space System Planning. The equity of RGS has been significantly improved after optimization, which can meet the needs of over 90% of residents for 15 min. This study provided feasible suggestions for the layout and structural optimization of the future RGS within the Third Ring Road of Chengdu, which aimed to create a RGS network with complex functions, to meet the multiple needs of citizens.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Research Areamentioning

confidence: 99%

Refuge Green Space Equity: A Case Study of Third Ring Road on Chengdu

Cao,

Guo,

Fang

et al. 2023

Land

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“…Remote sensing (RS), Global Positioning System (GPS) and Geographic Information Systems (GIS), collectively called “3S system”, are important tools in this field 34 . Li et al (2020) 35 proposed the nearest neighbor method in combination with GIS, considered road networks and census data, and evaluated the service extent of refugee parks in Changchun. Shi et al (2023) 36 used GIS network analysis technology to evaluate the accessibility of emergency medical aid for kindergartens and nursing homes in the Erqi District of Zhengzhou under different pluvial flooding scenarios.…”

Section: Introductionmentioning

confidence: 99%

Improving urban emergency medical service systems through brownfield transformation in Huangshi, China

Liu,

Feng,

et al. 2024

Sci Rep

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A comprehensive emergency medical service (EMS) system significantly enhances a city’s capacity to prevent and mitigate disasters. Using Huangshi as a case study, this research evaluated the service radium coverage rate of the current EMS system by examining its transport capacity, population density, and prevalence rate, finding it to be only 61.49% with an inefficient spatial layout. To address this, we proposed transforming urban brownfields into EMS parks. By selecting the most suitable brownfields based on capacity and service radius, we increased the coverage rate to 90.21%. We introduced a new "consultation-referral" model, where existing EMS facilities serve as pre-diagnosis and triage centers, and the urban brownfield EMS parks function as isolation and centralized treatment centers. GIS network analysis confirmed the feasibility, showing all transit times to be under 30 min. The methodology outlined in this study—comprising "demand assessment, supply optimization, and feasibility verification"—not only strengthens the city’s EMS system but also facilitates the renewal of urban brownfields. This approach can serve as a valuable reference for enhancing EMS systems in other cities.

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“…The selection of an appropriate RGS location is critical for the rapid evacuation of citizens after a major disaster [ 7 , 14 ]. Recent research on RGSs has mainly focused on site reconstruction, infrastructure supply, and service effectiveness [ 6 , 15 , 16 ], and the last is the core of an RGS establishment [ 17 ]. In China, rough estimates of the population density of the corresponding subdistrict often determine the scale of emergency shelters.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, objectively evaluating the accessibility of RGSs in historic cities and their potential of providing evacuation is an urgent task. Studies on the accessibility of refuge space accessibility have selected street- or block-scale census data for visualization, ignored spatial variations within street/block units, and roughly summarized geographic disparities with respect to RGS access [ 17 , 32 , 33 ]. In addition, most studies have used open spaces with potential refuge services instead of existing RGS [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Measuring spatial accessibility to refuge green space after earthquakes: A case study of Nanjing, China

Liu

et al. 2022

PLoS ONE

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The construction of refuge spaces in rapidly urbanizing historic cities is a challenging task owing to their complex urban form, unique urban fabric, and historic preservation requirements. Refuge green space (RGS) is a green space that can serve as an emergency shelter in cities, providing a flexible means to increase the emergency shelter capacity for rapidly urbanized historic cities. After major earthquakes, spatial accessibility to GRSs is a critical planning strategy for disaster prevention and emergency response in historic cities. To match the RGS planning with the emergency service demand, we must examine the spatial disparity in access to existing RGSs. In this study, the urban area of Nanjing was selected as the target region to analyze the spatial disparity in access to RGSs using the Gaussian two-step floating catchment area method at four evacuation times (10, 20, 30, and 60 min). The results showed that the spatial accessibility exhibited clustering characteristics, where high-accessibility spaces were mainly distributed in the northern and southern regions of Nanjing. The increase in the evacuation time improved accessibility to RGSs, but the existing RGSs still could not sufficiently satisfy the emergency shelter needs of citizens. Based on the bivariate local Moran’s I analysis of the RGS accessibility and population density, the spatial mismatch regions were dominant in the center of the urban area. These findings not only are expected to assist emergency planners by improving their strategic plans for emergency shelter investment in Nanjing and their ability to respond to catastrophic earthquakes, but also provide a strong reference for the construction of a safe environment in other rapidly developing historic cities that face earthquake threats.

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Evaluating Methodology for the Service Extent of Refugee Parks in Changchun, China

Cited by 7 publications

References 35 publications

Refuge Green Space Equity: A Case Study of Third Ring Road on Chengdu

Refuge Green Space Equity: A Case Study of Third Ring Road on Chengdu

Improving urban emergency medical service systems through brownfield transformation in Huangshi, China

Measuring spatial accessibility to refuge green space after earthquakes: A case study of Nanjing, China

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