Investigation of geomorphologic effects of land subsidence and its effects on ecosystem using ArcGIS software (Case study: Tehran)

Document Type : Scientific Paper

Authors

1 Master student of Echo Hydrology, University of Tehran

2 Ph.D Meteorology , Faculty of Agriculture, Rasht Branch, Islamic Azad University, Rasht, Iran./ M. Sc. Ecohydrology,Department of New Energies and Environment, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.

Abstract

The phenomenon of subsidence is one of the environmental hazards that have irreversible effects. Numerous human factors such as fluid extraction (water, gas and oil), compaction due to drainage, mineral extraction, compaction due to heavy loads such as dams and buildings, environmental factors such as tectonic and volcanic deformation, factors Soil geomorphology, disturbance of Isostasis and other factors cause this environmental anomaly. Due to the severe economic, environmental and human losses, programs and strategies should be used to control and manage this crisis. Due to the location of the city of Tehran and the widespread migration to this city during the last 10 years, biological needs have caused the change of land use to provide water, food and housing for citizens. This issue has led to uncontrolled abstraction of water and emptying of aquifers. Acceptable has been specified. This environmental risk causes changes in urban ecosystems and disturbs the balance of the environment.

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