Journal of Digital Landscape Architecture

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Blue-Green Factor (BGF) Indication as a Hybrid Method for Mapping the Spatial-temporal Dynamics of Post Socialist Urban Landscapes

Post-socialist countries have experienced accelerated urban expansion trends during the last three decades. Tirana, the capital city of Albania, has expanded dramatically through unsupervised urban sprawl processes. This trend manifested with the expansion of the artificial surfaces towards the urban-wildland interface at the expense of agricultural and natural lands. The hard-scape to soft-scape ratio has changed dramatically. It affects the water-retaining capacities of urban lands, raising urban life's vulnerability to hazards such as flooding, urban heat stress, and air pollution. This study illustrates the spatial-temporal transformation process of a neighbourhood in Tirana. The Blue-Green Factor (BGF) method enables assessing both quantitative and qualitative landscape features within a locality area. BGF is applied in QGIS, and results are interpreted via descriptive statistics. Here, we bring BGF as a hybrid mapping method that relies on analogue and digital data gathering and mapping techniques. The temporal analysis relies on geospatial evidence supplied by orthophotos of 1997, 2007, 2018 (via ASIG geoportal). The empirical work was done within a graduate course in the architecture department at Epoka University in Tirana. The team was composed of master-level students in architecture with no background information in either landscape research methods or GIS technologies. The results of this work show that the study area has experienced significant artificialization ratios in two decades. The presence of soft-scape surfaces and other landscape features have been reduced drastically, while the new investments rarely integrate minimal solutions for landscape features. This study aims to raise awareness that new urban developments must integrate designed landscape features to enhance naturebased solutions for current urban challenges.

Autor / Author: Hysa, Artan; Hysa, Desantila
Institution / Institution: Epoka University, Tirana/Albania; Epoka University, Tirana/Albania
Seitenzahl / Pages: 8
Sprache / Language: Englisch
Veröffentlichung / Publication: JoDLA – Journal of Digital Landscape Architecture, 7-2022
Tagung / Conference: Digital Landscape Architecture 2022 – Hybrid Landscapes
Veranstaltungsort, -datum / Venue, Date: Harvard University, Cambridge Mass, USA 09-06-22 - 10-06-22
Schlüsselwörter (de):
Keywords (en): Blue-green infrastructure, hybrid research methods, orthophoto, QGIS, Tirana
Paper review type: Full Paper Review
DOI: doi:10.14627/537724056
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