In Southeast Asia, projections of rapid urban growth coupled with high water-related risks call for large investments in infrastructure—including in blue–green infrastructure (BGI) such as forests, parks, or vegetated engineered systems. However, most of the knowledge on BGI is produced in the global North, overlooking the diversity of urban contexts globally. Here, we review the literature on BGI for flood risk mitigation and water quality improvement in Southeast Asian cities to understand the scope of practical knowledge and identify research needs. We searched for evidence of local types of BGI in peer-reviewed and grey literature and assessed the performance of BGI based on hydrological, societal, and environmental metrics. The body of literature on BGI in Southeast Asia is small and dominated by wealthier countries but we found evidence of uptake among researchers and practitioners in most countries. Bioretention systems, constructed wetlands, and green cover received the most attention in research. Evidence from modelling and laboratory studies confirmed the potential for BGI to address flooding and water quality issues in the region. However, practical knowledge to mainstream the implementation of BGI remains limited, with insufficient primary hydrological data and information on societal and environmental impacts. In addition, the performance of BGI in combination with grey infrastructure, under climate change, or in informal settlements is poorly studied. Future research and practice should focus on producing and sharing empirical data, ultimately increasing the regional knowledge base to promote efficient BGI strategies.

在东南亚，城市快速增长的预测加上与水相关的高风险要求对基础设施进行大量投资，包括对森林、公园或植被工程系统等蓝绿色基础设施 (BGI) 的投资。然而，关于华大基因的大部分知识都是在全球北方产生的，忽视了全球城市环境的多样性。在这里，我们回顾了关于华大基因在东南亚城市减轻洪水风险和改善水质的文献，以了解实践知识的范围并确定研究需求。我们在同行评审和灰色文献中搜索了 BGI 本地类型的证据，并根据水文、社会和环境指标评估了 BGI 的表现。东南亚关于华大基因的文献数量很少，主要由较富裕的国家主导，但我们发现大多数国家的研究人员和从业者都接受了证据。生物滞留系统、人工湿地和绿化覆盖在研究中受到最多关注。来自建模和实验室研究的证据证实了华大基因解决该地区洪水和水质问题的潜力。然而，将 BGI 实施纳入主流的实践知识仍然有限，主要水文数据和社会和环境影响信息不足。此外，华大基因与灰色基础设施相结合、在气候变化下或在非正规住区的表现也很少被研究。未来的研究和实践应侧重于生产和分享经验数据，