Urban greenery supports cities in achieving Sustainable Development Goals, but it is increasingly affected by multiple stressors impacting its health. Owing to the high costs of greenery inspection and monitoring, local governments often lack adequate data to effectively manage their urban greenery and prevent damage. In this Review, we present an overview of technology-supported methods and tools to measure the health of urban greenery and discuss the space–time resolution trade-offs associated with the various methods presented. To inform researchers and policymakers in global cities, we highlight how high-resolution urban greenery health data can support in achieving Sustainable Development Goals at scale.

城市绿化支持城市实现可持续发展目标，但它越来越受到影响其健康的多种压力因素的影响。由于绿化检查和监测的成本高昂，地方政府往往缺乏足够的数据来有效管理城市绿化并防止破坏。在这篇综述中，我们概述了用于衡量城市绿化健康状况的技术支持方法和工具，并讨论了与所提出的各种方法相关的时空分辨率权衡。为了向全球城市的研究人员和政策制定者提供信息，我们重点介绍了高分辨率城市绿化健康数据如何支持大规模实现可持续发展目标。