Green Alert: Monitoring Tree Health in Urban Landscapes

Urban environments present a multitude of environmental stressors that negatively impact tree biology. These stressors include soil deoxygenation due to waterlogging from poor or impeded drainage, soil compaction from human activities, increased frequency of drought and heat waves due to climatic changes, aerial pollution from elevated atmospheric pollutants caused by traffic and industry and the application of de-icing salts during subzero temperatures.