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Spatial Suitability Analysis for Green Space Expansion in Hue City: A GIS-AHP Approach

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Abstract:

Adding green spaces to developed urban areas is crucial for enhancing ecosystem services and enhancing residents’ health, comfort, and urban resilience. This study presents an integrated GIS–AHP (Analytic Hierarchy Process) framework to evaluate spatial suitability for urban green space expansion in the historic core of Hue City, Vietnam. Nine spatial criteria, including slope, distance to water bodies, land use/land cover, population density, distance to major roads, housing density, proximity to heritage zones, distance to existing parks, and Land Surface Temperature, were analyzed using a multi-criteria decision-making model. The AHP was applied to assign weights based on expert judgment, and spatial datasets were integrated in a GIS environment to generate a composite suitability map. The results classified urban land into five suitability levels, with 0.5% categorized as highly suitable, 6.1% as moderately suitable, 52.9% as appropriate, 37.7% as marginally suitable, and 2.8% as unsuitable. Approximately 29.66% of the total area was identified as having spatial potential for urban green space development beyond existing green coverage. The findings provide planners with spatially explicit guidance on where green space expansion is both feasible and impactful, particularly in dense inner-city areas near transportation and hydrological networks. The study underscores the importance of context-sensitive, data-driven planning tools in addressing land-use challenges in compact, heritage-sensitive cities. The proposed GIS-AHP approach offers a replicable and adaptable framework for supporting sustainable green infrastructure planning in rapidly urbanizing environments.

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Periodical:

Engineering Headway (Volume 40)

Pages:

59-75

DOI:

https://doi.org/10.4028/p-WOl902

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Online since:

July 2026

Authors:

Nguyen Bac Giang, Do Thi Viet Huong*, Nguyen Quang Viet

Keywords:

AHP, Hue City, Land Use Planning, Site Suitability, Urban Green Space (UGS)

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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