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Multi-functionality of nature-based and other urban sustainability solutions: New York City study
Stockholm University, Faculty of Science, Department of Physical Geography.
Number of Authors: 42018 (English)In: Land Degradation and Development, ISSN 1085-3278, E-ISSN 1099-145X, Vol. 29, no 10, p. 3653-3662Article in journal (Refereed) Published
Abstract [en]

In an increasingly urban world, developing sustainable cities is crucial for global sustainability. Urban nature-based solutions (NBS), such as green infrastructure, are often promoted for their potential to provide several urban services. These include stormwater mitigation, improving energy efficiency of buildings, and carbon emissions mitigation, but few studies have compared the multifunctionality of NBS to conventional urban solutions providing similar services. Fewer yet have acknowledged the indirect resource (specifically climate, land, energy, water [CLEW] nexus) impacts that these solutions may have. This paper analyzes these aspects, employing a simple CLEW nexus accounting framework, and attempts a consistent comparison across different resource systems. The comparison includes direct and indirect impacts of a set of stylizedand diversesolutions, each with different primary objectives: green roofs, representing a multifunctional urban NBS; permeable pavements targeting mitigation of stormwater flows; window retrofits targeting energy efficiency; and rooftop PV installations targeting CO2 emissions mitigation. The results highlight both the direct and total (CLEW nexus) impacts of green roofs on stormwater retention, energy use, and CO2 emissions. However, also for the studied conventional solutions with primarily a single direct function, CLEW nexus impacts spread across all measured dimensions (energy, water, and CO2) to varying degrees. Although the numerical results are indicative and uncertainty needs to be further assessed, we suggest that the development of this type of multifunctional, multisystem assessment can assist urban sustainability planning, with comprehensive and consistent comparison of diverse (NBS and conventional) solutions.

Place, publisher, year, edition, pages
2018. Vol. 29, no 10, p. 3653-3662
Keywords [en]
CLEW nexus, green roofs, multifunctionality, nature-based solutions, urban sustainability
National Category
Earth and Related Environmental Sciences Agricultural Science, Forestry and Fisheries
Identifiers
URN: urn:nbn:se:su:diva-162001DOI: 10.1002/ldr.3113ISI: 000447651700036OAI: oai:DiVA.org:su-162001DiVA, id: diva2:1264165
Available from: 2018-11-19 Created: 2018-11-19 Last updated: 2018-11-19Bibliographically approved

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