Not all forest soils are the same. This project is helping us understand whether differences in roots drive differences in soils.
Despite decades of research linking leaf properties to soil processes, relationships between tree root traits and soil carbon and nutrient cycling have been largely ignored. Indeed, tree species vary considerably in their root traits, which suggests that a new framework is needed to capture the key drivers of variation in forest soil biogeochemistry. This research addresses the following questions: 1) what are the relationships among tree root traits, microbial traits, and soil biogeochemistry? 2) do more closely related tree species have similar root traits and effects on soils? To address these questions, we are examining root effects on soils under 25 species of native, angiosperm trees at two arboreta: The Morton Arboretum and West Virginia University’s Core Arboretum. As tree ranges shift in response to climate change, understanding the drivers of variation in forest soil properties will enable us to predict how these new tree communities will function.
The Morton Arboretum