Urban forests, Trees and Environmental health

Evaluation of heavy metals concentration in soil and plants in environment are the most important subject according to the health of ecosystem. Phytoremediation is an emerging technology that uses plants to clean up pollutants (metals and organics) from the environment.The studies showed that the trees such as: Platanus occidentalis , Cupressus arizonica, Populus deltoids, Mulberry nigra, Arizona cypress can be use for decrease heavy metals in soil and environment.