Abstract
Land degradation and desertification caused by land use change is mainly due to human activities in arid and semi-arid and affect on the sustainable use of lands. The aim of this study was to evaluate the effects of land use changes on the desertification hazard in Maraveh Tappeh region. In this research, land use maps of 1986, 2000 and 2014 is provided using images of MSS, ETM and OLI sensors of Landsat satellite and land use map of 2024 is predicted using Markov chain model. According to the results, dense forest area is decreased during study period and with passing time, the area of agricultural land has increased. The results for the time interval of 2014-2028, showed it is possible that will be decreased semi-dense forest and dense rangelands and will be increased other land-use areas according to results of model predictions. In the study years, desertification maps were prepared using ESAs method and with the assumption of fixed all factors other than land use factor. The results showed that there was a lack of desertification as a class in 1986, but this class has been removed in other study years and has been added the area of this class into other classes. The compare of desertification hazard classes and theirs percentage of area in studied time periods showed that critical (C3) and fragile (F3) classes had increasing trend, clearly. The difference between classes since 1986 to 2000 is clearer and more specific and destruction seem clearer.
Highlights
Land use is defined as use and management of land cover under human use and can be defined human intervention in the style of a certain type of land cover to produce, change or preservation of land (Orekan, 2007)
Sustainable use of land is under threat due to land degradation in arid and semi-arid that is mostly caused by human activity (Dumanski & Pieri, 2000)
Dewan and Yamaguchi (2009) in the study of land use changes (1975-2003) in Dhaka of Bangladesh reported that many constructions were carried out in the study period, as well as a significant decrease in the amount of water, arable land and vegetation cover due to increased urbanization, population growth and economic development
Summary
Land use is defined as use and management of land cover under human use and can be defined human intervention in the style of a certain type of land cover to produce, change or preservation of land (Orekan, 2007). Common patterns of land use are changed often as a result of human activity in different temporal and spatial scales. Desertification in arid, semi-arid, and dry sub-humid regions, is a global environmental problem. Desertification sensitivity can be defined, in this context, as the response of the environment or part of it to a change in one or more external factors (Smelser & Baltes, 2001). The UN (United Nation) Food and Agriculture Organization (FAO), has announced the agricultural sector causes one-third of global warming and climate change which the result of improper management and land use change (Lal, 2005). Sustainable use of land is under threat due to land degradation in arid and semi-arid that is mostly caused by human activity (Dumanski & Pieri, 2000). Sustainable use of land is under threat due to land degradation in arid and semi-arid that is mostly caused by human activity (Dumanski & Pieri, 2000). Nassauer et al (1999) and Bartel (2000) indicated that landscape pattern and function mas.ccsenet .org
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