New study: Precipitation can increase stability of some trees in wind storms

left panel shows physical forces present for tree pulling experiment, and the right panel shows an uprooted tree

Root anchorage is one of the main drivers of tree stability in wind storms. Tree winching help to understand forces that tree can withstand. We compared stability of two pine species after wetting the soil and uncovered that wet soil can actually *increase* tree strength by add weight to the root mass. This experiment helped resolve a paradox of soil moisture by distinguish the opposite effects of long-term and short-term soil moisture.