Évaluation de la qualité de l'air à l'aide de Bioindicateurs dans des stations de la région de Sétif

Abstract

The aim of this study is to evaluate air quality at ten rural and urban stations in the Sétif region using epiphytic lichens as bioindicators. A total of 21 epiphytic lichen species were identified across the ten study stations, with Xanthoria parietina being the most predominant. In this region, crustose lichens represent the most common morphological group. The AQI calculated in the study area ranges from 17.98 to 47.52, while the species diversity index ranges between 23.80 and 38.09. These variations in the indices reveal a significant relationship between lichen diversity and air quality, suggesting that atmospheric pollution in the ten stations of the Sétif region is moderate. The increase in urbanization and road traffic indicates a decline in both lichen biodiversity and air purity, particularly in urban areas.