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Quantitative study of spatiotemporal changes in ecology to monitor land degradation in Alborz Province. | ||
| Desert | ||
| دوره 29، شماره 1، شهریور 2024، صفحه 21-36 اصل مقاله (1.91 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jdesert.2024.97915 | ||
| نویسندگان | ||
| N. Mostafavi1؛ Gh. Zehtabian1؛ H. Azarnivand1؛ H. Keshtkar1؛ Hassan Khosravi* 2 | ||
| 1Department of Arid and Mountainous Regions Reclamation, Faculty of Natural Resources, University of Tehran, Karaj, Iran | ||
| 2Assistance Professors, Faculty of Natural Resources ,University of Tehran ,Karaj, Iran. | ||
| چکیده | ||
| The expansion of human activities has caused widespread disturbances in ecosystems worldwide, necessitating the development of effective tools to monitor and quantify these changes. Remote sensing stands as a powerful tool for monitoring and quantifying ecological changes over time and space. In this study, a remote sensing-based ecological index (RSEI) was used to investigate land degradation and desertification in Alborz province during the period 2000-2020. After examining land use changes, the trend of RSEI outputs was evaluated using the Mann-Kendall test and Theil-Sen estimator. The examination of land use changes during the period 2000-2020 showed that barren lands, rangelands, shrublands and forests decreased by 2.30%, 6.25%, 1.53%, and 0.18%, respectively, while crop lands, built-up lands, and dam increased by 8.23%, 1.85%, and 0.18%, respectively. The analysis of the trend of changes in the RSEI using the Mann-Kendall test showed that the changes in 16.27% of Alborz province was decreasing, of which about 0.5% was statistically significant. This decreasing trend was also shown by the Theil-Sen estimator in 13% of this region. The results of this study using the Mann-Kendall test also showed that the RSEI values increased in 80.73% of the study area, of which about 4% increased significantly. The analysis of changes in this index using the Theil-Sen estimator showed that this index increased in 87% of this region. This study suggests that the RSEI approach performs effectively in quantifying and detecting ecological changes and, as a result, land degradation at various scales. | ||
| کلیدواژهها | ||
| RSEI؛ Remote sensing؛ Land degradation؛ Alborz province | ||
| مراجع | ||
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