Monitoring of land cover changes using remote sensing technology

Document Type : Original Article

Authors

1 Environmental Sciences and Engineering, Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran

2 Department of Physical Geography, Faculty of Geographical Sciences and Planning, Isfahan University, Isfahan, Iran.

10.48308/envs.2023.1341

Abstract

Background and purpose: Investigating changes in land cover is one of the most important aspects of natural resource management and reviewing environmental changes. With the increase of urban and rural areas and the necessities of human life, changes are made on the surface of the earth. These changes are caused by the confrontation of the constant needs of human societies and the environment with the earth. In this research, using remote sensing technique, the monitoring of land surface changes in Khoda Afarin and Kalibar cities was investigated using remote sensing technology during a period of 22 years (2000-2022).
Materials and methods: In order to perform statistical and visual analysis of MODIS sensor images installed on Terra and Aqua satellites, for the period of 2000 to 2020, the method of classification and extraction of the earth's surface cover was studied.
Results and discussion: Twenty MODIS sensor images were analyzed for the period under review and annual maps and change trend charts of each land use were drawn.
Conclusion: The results show that the area of forest and shrub cover has decreased, and instead, there has been a significant increase in barren, water, pasture and agricultural cover, although the increase in water cover is due to the construction of dams in the study area. Also, the results of examining the amount of precipitation and drought show that the trend of precipitation is decreasing and relatively severe droughts have occurred in the region.

Keywords

Environmental Sciences

Articles in Press, Accepted Manuscript
Available Online from 02 January 2024

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