Ecosystem services are ecological processes that humans can profit from Urban forests provide valuable services including carbon sequestration, air and water quality improvement, energy conservation (shade), noise reduction, climate mitigation and recreational/aesthetic value. Perception of the value of urban forests can be divided into two groups. The first group consists of those who acknowledge the monetary value of pollution mitigation and associated health benefits. The second group consists of those who value the aesthetic, recreational and spiritual aspects of urban forests. Factors that influence an individual’s perception can be education, health, or proximity of their home to green space.