Foliar water uptake (FWU) has been identified as a mechanism commonly used by trees and other plants originating from various biomes. However, many questions regarding the pathways and the implications of FWU remain, including its ability to mitigate climate change-driven drought. Therefore, answering these questions is of primary importance to adequately address and comprehend drought stress responses and associated growth. In this review, we discuss the occurrence, pathways, and consequences of FWU, with a focus predominantly on tree species. Subsequently, we highlight the tight coupling between FWU and foliar fertilizer applications, discuss FWU in a changing climate, and conclude with the importance of including FWU in mechanistic vegetation models.

叶吸收水分（FWU）已被确定为树木和其他植物的生物群落常用的一种机制。但是，关于FWU的途径和含义的许多问题仍然存在，包括其缓解气候变化驱动的干旱的能力。因此，回答这些问题对于充分应对和理解干旱胁迫反应及相关生长至关重要。在这篇综述中，我们讨论了FWU的发生，途径和后果，主要侧重于树种。随后，我们强调了FWU和叶面肥施用之间的紧密联系，讨论了气候变化中的FWU，并总结了将FWU包括在机械植被模型中的重要性。