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Predicting the impact of climate change on the area of wetlands using remote sensing

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Abstract

Climate change has been the main environmental challenge in recent years. In this research, the impact of climate change on the Arjan Wetland, Iran, has been investigated. The global climate models of canESM2 and hadGEM2 were used to predict the air temperature and precipitation for 2025–2066 in scenarios of RCP 2.6, 4.5, and 8.5. Temperature and precipitation data were downscaled using SDSM and LARS-WG software, respectively. Then, the wetland area was measured by processing the Landsat satellite images using the MNDWI algorithm. Forecast data were applied to estimate the wetland area for 2025–2066 and the scPDSI drought index. The results indicate that the estimated areas of the future period will slightly decrease; as a result, 90% of the areas in the years 2045–2066 are less than 800 hectares, and more than1100 hectares have not been dried in these years. The reduction of the area compared to the observation period is due to climate change and it shows the Arjan wetland is going towards drought. In 2036–2039, 2042, 2052, 2056–2058, and 2062, severe droughts will occur in wetlands under three scenarios with an area of less than 200 ha. According to the climate projections, the wetland will experience severe wet years in 2025, 2044, and 2045. So, the wetlands are probably less threatened by climate change than anticipated prior to this study.

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The data that support the findings of this study are available from the corresponding author upon reasonable request.

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The authors declare that no funds, grants, or other supports were received during the preparation of this manuscript.

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“All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Mahdiyeh Eghbal, and Nima Heidarzadeh. The first draft of the manuscript was written by Negar Esmaeili and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.”

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Correspondence to Nima Heidarzadeh.

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Heidarzadeh, N., Eghbal, M., Esmaeili, N. et al. Predicting the impact of climate change on the area of wetlands using remote sensing. Theor Appl Climatol (2024). https://doi.org/10.1007/s00704-024-04969-9

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  • DOI: https://doi.org/10.1007/s00704-024-04969-9

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