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<p>Socio-hydrological approach is a new science that is aimed at understanding the dynamics and co-evolution of coupled human-water systems. We use this concept to analyze how flood risk related to social resilience in Can Tho city, one of the biggest urban area located in the Vietnamese Mekong delta. The study employed both secondary and primary data collected in two inner districts of Ninh Kieu and Cai Rang. Key informant interview with related stakeholders and focus group discussion with local community were conducted in the reserach sites. The results showed that urban flood tends to rise up year by year because of various drivers such as increase of rainfall in a short time combined with the blockage of sewers due to garbage or/and lack of green areas. In term of hydrological aspect, rainfall, river water level and discharge are key factors. In addition, the social drivers like ineffective urban planning and inappropriate human behaviour also play an important role causing serious inundation. We also found that flood risk contributes to reduce social resilience by different ways including infrastructure damages, transportation disruption, livelihood decline, social network discontinuance, landscape degradation, environmental poluttion, human health and fatality. Therefore, it is necessary to take into account both social and hydrological drivers to mitigate the flood risk on one hand and enhance social resilience on the other. Green urban development which has the greatest potential for improving the quality of ecosystem services and providing opportunities for urban dwellers to reconnect with nature should be a good strategy for disaster risk reduction in this situation.</p>

Green transition is an urgent need for all countries, but there are many challenges in its implementation, especially in developing countries like Vietnam. This study was carried out through an analysis of relevant policies and a case study of conversion from rice monoculture to an integrated rice-shrimp farming system in the Vietnamese Mekong Delta. The results showed that Vietnam has many policies, strategies, and plans to promote economic transformation toward sustainable, green, low emission, and climate change adaptation. However, the implementation of these policies in practice still faces some difficulties. The case study's result revealed that the rice-shrimp model is suitable and brings many benefits to society, economy, and environment. The success of the transition depends on many factors including initiative, creativity, and consensus at the local level. A theoretical framework was built to promote the transition toward green and sustainable development in the future.