Evaluation of Urban growth and Its impact on Vegetation and Environmental Sustainability (case study: Zahedan city)

Document Type : Research Paper

Authors

1 Yazd University

2 Assistant professor, Department of Geography, Yazd University, Yazd, Iran

3 Hakim Sabzevari University

4 PhD Candidate in Remote Sensing, Center for Remote Sensing and GIS Research, Shahid Beheshti University, Tehran, Iran

10.22126/ges.2024.10009.2717

Abstract

unplanned urban physical development inflicts irreparable damages such as Land use change causes, vegetation loss, Increase in the temperature of the earth's surface, The increase in the price of residential land And the tendency to marginalization becomes unplanned . In this research, In order to investigate urban changes during a 25-year study period from 1995 to 2020 in order to prevent the mentioned damages due to physical development without plan three Landsat images for analysis were obtained from the USGS website. Pre-processing and processes to identify the changes on the images to estimate the physical development were done in ArcGIS and ENVI software, the surface temperature was extracted, the marginal areas were determined, the change map was obtained and finally the results were validated. The results showed that in 2020 and 2015, the temperature of the earth's surface in the northern and northeastern regions is higher than in other directions of the city, during 2020-1995, about 1850 hectares have been added to the area of urban areas. The main reason for the physical development of Zahedan city in the east and northeast direction has the expansion of marginalization in agricultural lands. Also, one of the reasons for the expansion of the city of Zahedan in the south and southwest direction is the presence of industrial towns and administrative centers such as universities. Therefore, due to the increase of built-up lands (marginal areas), the agricultural land in the north and northeast of Zahedan city has decreased and its temperature has increased. It is necessary to continuously monitor urban changes so that urban managers can carefully plan for physical development of cities in order to prevent uncontrolled urban physical development and its possible future risks.

Keywords

Main Subjects

Geography and Environmental Sustainability

Articles in Press, Accepted Manuscript
Available Online from 06 May 2024

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