More than mitigation: The role of forests in climate adaptation.

Forests regulate global and local climates in ways that impact human well-being. In this Review, we discuss the scale-dependent mechanisms through which forests regulate climate, highlighting their contributions to global mitigation and local adaptation. Locally, forests tend to buffer temperatures, cooling in warm conditions and warming in cold ones. In regions that naturally support dense forest cover, trees contribute to global cooling primarily through carbon uptake, with some offsetting from albedo-related warming. By enhancing rainfall interception, evapotranspiration, and cloud formation, forests also influence the hydrological cycle, lowering flood risks in humid regions but often reducing downstream water availability, especially in drier climates. Collectively, these interacting processes show that the greatest climate benefits occur where forests are native, highlighting their importance for both climate adaptation and mitigation. Editor's summary: Planting, maintaining, and restoring forests are among the suite of strategies used to mitigate climate change through carbon storage. However, forests can also contribute to climate adaptation by cooling the local environment, altering hydrology, and improving human health and well-being. Reek et al. synthesized data and findings on forests' effects on temperature and hydrology and discuss how these effects vary depending on the environmental context, with implications for forest management and climate adaptation planning. —Bianca Lopez [ABSTRACT FROM AUTHOR]