Cadmium Behaviour In Urban Soils Of Mashhad : Its Impact On Plants And Soil

IJEP 41(4): 419-426 : Vol. 41 Issue. 4 (April 2021)

Mohsen Shariati, Ali Reza Astaraei*, Amir Lakzian and Hojat Emami

Ferdowsi University of Mashhad, Department of Soil Science, Faculty of Agriculture, Mashhad, Iran


To investigate cadmium (Cd) behaviour in soil due to vehicular traffic under rosemary and grass plants in three urban areas of Mashhad, this study was carried out in a completely randomized design (factorial). In the studied sites,the first 30 cm of upper soil was replaced with new superficial soil (alongwith compost and cow manure) as control, prior to soil contamination. In four seasons, sampling from soil, shoots and roots of rosemary and grass plants was taken and Cd concentrations were measured. The results showed that the average Cd concentration in control soil (without cultivation) in two sites: 100 m (Mosalla complex) sites and Imam Reza bus terminal during the experiment period increased significantly from spring to winter season, while on the third site: Botanical garden, soil Cd was almost constant. The highest soil Cd concentration was noted in winter,while in three sites, the soil Cd concentration decreased. The Cd concentration of aerial parts of each plant was significantly different during the seasons. The plant Cd concentration decreased during the spring and summer, while it increased in the autumn and winter season. It is concluded that rosemary cultivation in urban parks is a good candidate for Cd phytostabilization.


Rosemary, Grass, Soil, Cd toxicity, Urban environment


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