Spatial Mapping of Heavy Metals Using Lichen Bioaccumulation Capacity to Assess Air Contamination in Morocco

Abstract

Spatial mapping of the distribution of heavy metals was performed with the Inverse Distance
Weighted technique (IDW) of ArcGis-10 information system (GIS).We propose an innovative
study based on information system technology and lichen biomonitoring to assess air pollution.
The results demonstrated that the contamination of heavy metals (HM) fluctuates with certain
hotspots with a high concentration of Cr, Pd, Cu, Cr, and Fe.The spatial mapping showed that
“SidiYayha El Gharb” is the most contaminated area not only due to lithogenic sources but also
from industries and traffic. Spatial mapping shows that the environment is highly affected by
industrial discharges, and remediation activities should be carried out urgently to prevent serious
health problems and ecological disasters.