Namares—A Surface Inventory and Intervention Assessment Model for Urban Resource Management

Elias Naber, Rebekka Volk, Kai Mörmann, Denise Boehnke, Thomas Lützkendorf and Frank Schultmann
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Elias Naber: Institute for Industrial Production, Karlsruhe Institute of Technology, 76187 Karlsruhe, Germany
Rebekka Volk: Institute for Industrial Production, Karlsruhe Institute of Technology, 76187 Karlsruhe, Germany
Kai Mörmann: Institute of Sustainable Management of Housing and Real Estate, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Denise Boehnke: Division 4—Natural and Built Environment, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
Thomas Lützkendorf: Institute of Sustainable Management of Housing and Real Estate, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Frank Schultmann: Institute for Industrial Production, Karlsruhe Institute of Technology, 76187 Karlsruhe, Germany

Sustainability, 2022, vol. 14, issue 14, 1-34

Abstract: Densely built-up areas are challenged by reduced biodiversity, high volumes of runoff water, reduced evaporation, and heat accumulation. Such phenomena are associated with imperviousness and low, unsustainable utilisation of land and exterior building surfaces. Local authorities have multiple objectives when (re-)developing future-proof districts. Hence, exploiting local potentials to mitigate adverse anthropogenic effects and managing the resource of urban land/surfaces have become key priorities. Accordingly, a five-level hierarchy for a land-sensitive urban development strategy was derived. To support the operationalisation of the hierarchy, we present the model Namares, a highly resolved GIS-based approach to enable spatially explicit identification and techno-economic and environmental assessment of intervention measures for advantageous utilisation of available surfaces per land parcel. It uses existing data and covers the management of economic, natural, and technical resources. Nine intervention measures are implemented to identify potentials, estimate investments and annual costs, and assess the appeal of existing subsidies. The approach was applied to a case study redevelopment area in a large city in Germany. The results provide spatially explicit information on greening potentials, estimated investments, subsidy demand, and other quantified benefits. The case study results show the limited potential for additional unsealing of impervious surfaces by transforming ca. 10% of sealed ground surface area into new urban gardens. At the same time, up to 47% of roof and 30% of facade surfaces could be utilised for greening and energy harvesting. The approach enables a comprehensive localisation and quantitative assessment of intervention potentials to enhance decision support in land-sensitive urban development strategies.

Keywords: urban surfaces; geographic information system; assessment; soil; facade; roof; plot-level; potential; techno-economic; climate change adaptation; namares (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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