TY - JOUR T1 - Landscape Below Ground IV: Introduction to a Special Issue JF - Arboriculture & Urban Forestry (AUF) SP - 237 LP - 238 DO - 10.48044/jauf.2019.019 VL - 45 IS - 6 AU - Gary Watson Y1 - 2019/11/01 UR - http://auf.isa-arbor.com/content/45/6/237.abstract N2 - This special issue is dedicated to research presented at the 2018 Landscape Below Ground IV conference. We describe highlights from the ten original research articles included in this issue. With these articles, we aim to support the advancement of tree care practices and inform managers and policymakers to choose, site, plant, and care for healthier, longer-lived trees by focusing on their critical and vulnerable root systems and the soil that surrounds them. ER -