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 Conventionally engineered, ‘grey’ stormwater infrastructure often is outdated and unable to control these increased runoff volumes.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.

中文翻译：

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实施住宅雨水管理绿色基础设施的社会心理决定因素

气候变化影响和不透水程度的增加，导致全球许多城市地区经历更大的降雨径流，需要对其进行管理以保护财产和基础设施，并避免环境污染。传统设计的“灰色”雨水基础设施通常已经过时，无法控制这些增加的径流量。绿色雨水基础设施 (GSI) 可以补充灰色基础设施，但用于安装的公共土地有限。因此，市政当局通常希望住宅物业在地块级别安装 GSI。虽然已经在 GSI 的工程方面进行了许多研究，但对于决定居民在其房产上安装 GSI 的决定的因素知之甚少。为了帮助弥合这一知识鸿沟，我们使用计划行为理论作为理论框架，对住宅 GSI 实施的社会心理决定因素进行了调查，并使用偏最小二乘路径建模分析了我们的数据。来自我们案例研究区三个社区的结果表明，居民安装 GSI 的决定在很大程度上取决于社会规范和感知控制因素，例如可用资金和时间。然而，居民对 GSI 的有效性和吸引力的信念和态度似乎并没有发挥重要作用。包括当地洪水历史在内的社区特征似乎也不影响居民对安装 GSI 的决定。