Assessing plants resistant to heavy elements in the sewage soil of the construction waste recovery center of Gud Abali – Tehran

Document Type : Original Article


Department of Environmental Planning and Design, Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, Iran


Introduction: Environmental pollution caused by growing dumps of increasing urban construction wastes has adverse effects on the health of the environment. This research was carried out with the aim of planting plants resistant to heavy elements in the construction waste recovery center of Gud Abali - Tehran.
Material and methods: The research method, while laying the foundation of cognitive theory, was experimental-analytical, which was carried out cross-sectionally in 2022. The research samples are oleander (Nerium oleander), eucalyptus (Eucalyptus camaldulensis), bitter olive (Melia azedarach), Myrtus communis L., rose (Rosa damascena), pistachio (Pistacia vera) and pine (Pinus). They were randomly selected. Lands were selected based on the necessity of ten percent planting of plants around industrial factories according to the environmental regulations of the Environmental Organization and in the surrounding environment of the sand factory. The samples were planted in the effluent soil of the Abali Mining Center in Tehran and were kept under light and temperature conditions of 37 degrees during several months of care and irrigation. The measurement tool was objective observation, the validity of which was confirmed by experts and the reliability of plant growth criteria. Then the findings were analyzed using laboratory investigation and content analysis and SPSS software.
Results and discussion: The findings showed that the increase in the concentration of heavy metals Cd and Pb in the sewage soil of the region causes a decrease in the diversity and density of plant species, and by managing the planning of plants resistant to heavy elements, the adverse effects of these elements on the diversity and density of vegetation in the region can be reduced. The findings showed that the eucalyptus plant did not grow at the beginning of the growing season due to the high absorption of heavy metals, but the oleander, bitter olive, case, rose, pistachio and pine plants continued to grow. Since it is not possible to expand the vegetation of Gud Abali area of Tehran without evaluating the resilience of resistant plant species to heavy elements of the region, the application of these findings in presenting the species planting pattern will lead to the biological instability of the land's vegetation.
Conclusion: Assessing plants resistant to heavy elements can reduce the adverse effects of heavy elements on plant diversity and density in the region. In this regard, plant remediation is recommended in order to manage the concentration of heavy elements in the effluent soil of Gud Abali Construction Waste Recovery Center of Tehran.


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