Assessment of Trends of Spatial Land Use Changes using Geographic Information Systems and Landsat Images During the 1991-2016 Period

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Pajoohesh M.; Yousefi M. Mahammad; HONARBAKHSH A.; Reyahi Bakhtyari H. R.

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Journal: Journal of Water and Soil Science Year:2020 | Volume:24 | Issue:1 Page(s): 197-211

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Title

Assessment of Trends of Spatial Land Use Changes using Geographic Information Systems and Landsat Images During the 1991-2016 Period

Author(s)

Pajoohesh M. | Yousefi M. Mahammad | HONARBAKHSH A. | Reyahi Bakhtyari H. R. | Issue Writer Certificate

Keywords

Land Use ChangesQ1

Remote SensingQ2

Hybrid methodQ1

Beheshtabad watershedQ1

Abstract

In order to plan and manage the land and its changes, it is necessary to identify and evaluate the factors affecting it. Land use / cover changes are one of the main factors in global environmental change that is defined as a change in the type of land use; it is one of the major factors changing hydrologic flow, land erosion and destruction of biodiversity. The main purpose of this study was to assess the trends of Land Use Changes in Beheshtabad watershed of Chaharmahal and Bakhtiari Province with an area about 3847 square kilometers by using Remote Sensing and GIS during a 25-year period. In this research, first, analyzing and pre-processing the satellite images of Landsat 5 TM sensors from 1991 and 2008 were done, and Landsat 8 of OLI sensor of 2016 was applied. Then, by using the hybrid classification method, 5 land use classes including pasture lands, urban-building lands, agricultural lands, garden lands and bare lands, land use maps for the three time periods were prepared. The overall accuracy of the obtained land use maps for 1991, 2008 and 2016, was 92. 17%, 94. 29% and 93. 41%, respectively, indicating the acceptable accuracy of the maps. Then, the process of land use change and the contribution of each land use classes and the percentage of changes in each land use class were determined in two study periods. The results of this study showed some changes occurred in the studied watershed. The total area of pasture lands during two periods indicated the decreasing trend, but urban-building and garden lands during two periods represented the increasing one. Agricultural lands during the first period indicated the decreasing trend and during the second period showed the increasing trend, while bare lands during the first period showed the increasing trend and during the second period, reflected the decreasing trend. In general, it should be noted that in the Beheshtabad watershed, we could see an increase in the replacement of pastures by urban-building class, rainfed agriculture, gardens, and bare lands, the incidence of destruction in the region.

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APA: Copy

Pajoohesh, M., Yousefi, M. Mahammad, HONARBAKHSH, A., & Reyahi Bakhtyari, H. R.. (2020). Assessment of Trends of Spatial Land Use Changes using Geographic Information Systems and Landsat Images During the 1991-2016 Period. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 24(1 ), 197-211. SID. https://sid.ir/paper/367992/en

Vancouver: Copy

Pajoohesh M., Yousefi M. Mahammad, HONARBAKHSH A., Reyahi Bakhtyari H. R.. Assessment of Trends of Spatial Land Use Changes using Geographic Information Systems and Landsat Images During the 1991-2016 Period. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2020;24(1 ):197-211. Available from: https://sid.ir/paper/367992/en

IEEE: Copy

M. Pajoohesh, M. Mahammad Yousefi, A. HONARBAKHSH, and H. R. Reyahi Bakhtyari, “Assessment of Trends of Spatial Land Use Changes using Geographic Information Systems and Landsat Images During the 1991-2016 Period,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 24, no. 1 , pp. 197–211, 2020, [Online]. Available: https://sid.ir/paper/367992/en

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