The purpose of this study was to determine the influence of socio-demographic variables on willingness to implement Nature-based Solutions (NbS), as well as people's perceptions and awareness of such systems for a more sustainable flood risk management in an urban area, particularly in Davao City, Philippines. Data were collected through an online survey questionnaire with a total of 360 respondents. The results showed that socio-demographic variables generally had no significant influence on the willingness of people to implement NbS. The survey also found a general lack of knowledge about NbS, but a relatively higher perceived efficacy of such systems. Ordinal regression analysis revealed that respondents' level of awareness and perceived efficacy of gray infrastructures are strongly correlated with their willingness to implement NbS. Despite acknowledging the effectiveness of existing flood risk management systems, respondents were still more likely to implement NbS. Approximately 60% of the respondents expressed high willingness to adopt all the evaluated NbS as part of the flood risk management system. Thus, to increase trust in NbS and encourage their adoption, it is highly encouraged that NbS be communicated to the public and policymakers should be clearer and more accessible, highlighting the multifunctionality of these systems.
Maintang et al. (Sat,) studied this question.