Social-psychological Determinants of the Implementation of Green Infrastructure for Residential Stormwater Management
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Social-psychological Determinants of the Implementation of Green Infrastructure for Residential Stormwater Management Michael Descher
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Sarah Sinasac2
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Received: 2 June 2020 / Accepted: 29 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Climate change effects and increasing levels of imperviousness, cause many urban areas globally to experience larger rainfall runoff volumes that need to be managed to protect property and infrastructure, and avoid environmental pollution. Conventionally engineered, ‘grey’ stormwater infrastructure often is outdated and unable to control these increased runoff volumes. Green stormwater infrastructure (GSI) can complement grey infrastructure, but public land for its installation is limited. Consequently, municipalities often look to residential properties to install GSI at the lot-level. While many studies have been conducted in the engineering aspects of GSI, less is known about what determines residents’ decisions to install GSI on their properties. To help close this knowledge gap, we conducted a survey of social-psychological determinants of residential GSI implementation using the Theory of Planned Behavior as theoretical framework, and analyzing our data with partial least squares path modeling. Results from three neighborhoods of our case study area suggest that residents’ decisions to install GSI largely are determined by social norms and perceived control factors such as available finances and time. However, residents’ beliefs and attitudes toward the effectiveness and attractiveness of GSI did not seem to play a significant role. Neighborhood characteristics including local flooding history did not seem to affect residents’ decisions about GSI installation either. We recommend creation of effective municipal education and outreach programs regarding urban stormwater management that speak to residents’ shared responsibility and options for addressing this issue, as well as creation of financial instruments that provide meaningful subsidies for residential GSI adoption. Keywords Climate change Green infrastructure Stormwater Social-psychology Theory of Planned Behavior Urban ●
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Introduction Due to the effects of climatic change many parts of the world can expect increased total precipitation as well as increased intensity and frequency of extreme rainfall events over the next century (Rosenberg et al. 2010). Increasing intensity of extreme weather events has already been observed and many municipalities are not equipped with
Supplementary information The online version of this article (https:// doi.org/10.1007/s00267-020-01393-3) contains supplementary material, which is available to authorized users. * Michael Descher [email protected] 1
School of Planning, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
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Cooperation of the Town of Amherstburg, 271 Sandwich Street South, Amherstburg, ON N9V 2A5, Canada
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the proper infrastructure to deal with th
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