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The social divide in environmental action: demographic gaps in public response to microplastic pollution in Taiwan
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A population survey in Taiwan found significant demographic gaps in awareness of and action on microplastic pollution, with education, income, and age being strong predictors of both knowledge and behavioral response. These findings highlight that public health campaigns about microplastics need to be targeted and inclusive, as the populations least engaged may also face the greatest exposure risks.
Public engagement is critical for mitigating environmental threats such as microplastic pollution, yet societal responses are often uneven and socially stratified. This study used a cross-sectional, population-based telephone survey to investigate the demographic determinants of public engagement with microplastic pollution in Taiwan, revealing a significant social divide in microplastic-related environmental knowledge, awareness of microplastic pollution and support for mitigation, and behaviors (KAB). Drawing on a nationwide telephone survey of 1,069 adults and using logistic regression, our findings map the key dimensions of this divide. Notably, a sharp knowledge-action gap emerged among younger adults (18-29), who exhibited lower odds of higher awareness of microplastic pollution and support for mitigation [odds ratio (OR) = 0.29, 95% confidence interval (CI), 0.17-0.51] and microplastic-reducing behaviors (OR = 0.37, 95% CI, 0.22-0.64). Socioeconomic status was a powerful predictor; higher education was linked to greater engagement across all KAB domains, while higher incomes (≥NT$110 000) correlated with higher awareness and stronger support for mitigation (OR = 1.85, 95% CI, 1.08-3.18) and behaviors (OR = 1.82, 95% CI, 1.06-3.11). Furthermore, a persistent gender gap was evident, with men showing lower odds of higher awareness of microplastic pollution and support for mitigation (OR = 0.72, 95% CI, 0.56-0.93) and behaviors (OR = 0.55, 95% CI, 0.42-0.70) than women. These deep-seated demographic gaps challenge the efficacy of one-size-fits-all environmental governance. By identifying the specific populations that are less engaged, this study provides a crucial evidence base for designing the equitable and targeted policy interventions needed to address the escalating threat of microplastic pollution.
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