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Comparative analysis of the effects of climate change and land use on runoff and its prediction in a mountainous watershed in Northwestern Iran | ||
| مدل سازی و مدیریت آب و خاک | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 12 شهریور 1404 | ||
| نوع مقاله: Special Issue: New Approaches to Water and Soil Management and Modeling | ||
| شناسه دیجیتال (DOI): 10.22098/mmws.2025.18107.1644 | ||
| نویسندگان | ||
| Tayebeh Irani1؛ Hirad Abghari* 2؛ Ali Akbar Rasouli3 | ||
| 1PhD graduate, Department of Range and Watershed Management, Faculty of Natural Resources, Urmia University, Urmia, Iran. | ||
| 2Associate Professor, Department of Range and Watershed Management, Faculty of Natural Resources, Urmia University, Urmia, Iran. | ||
| 3Professor Department Faculty of Science and Engineering, Macquarie University, Sydney, NSW, Australia | ||
| چکیده | ||
| Sustainable water resource management in semi-arid regions requires a precise understanding of the impacts of climate change and land use on hydrological processes. Climate change and land use are primary factors influencing the hydrological processes of mountainous watersheds in semi-arid areas. This study conducts a comparative analysis of their effects on runoff and water retention in the Zolachai watershed, located in northwestern Iran, using the InVEST model. Climate data, including SSP2-4.5 and SSP5-8.5 scenarios from the ACCESS-CM2 model, Sentinel-2 satellite imagery for 2016, 2020, and 2023, and hydrological soil group data (A, B, C) were used to generate runoff and water retention maps for 2016, 2023, and projections for 2030. Results revealed that residential areas, with Curve Numbers (CN) of 70–90, exhibit the lowest water retention and highest runoff (359.4–647 mm) due to impervious surfaces. Conversely, orchards and irrigated lands, with CN 36–80, demonstrate the highest water retention and lowest runoff (137.2–333.8 mm) owing to high soil permeability and vegetation cover. Projections for 2030 indicate an increase in orchards and irrigated lands from 221.11 to 528.18 km² and a decrease in pastures and bare soils, leading to increased water consumption and reduced surface flows. Climate change, particularly under the SSP5-8.5 scenario, intensifies rainfall, elevating flood risks. These findings highlight the need for integrated water resource management to mitigate environmental risks such as soil erosion and flooding. This study provides a model for sustainable management of mountainous watersheds. | ||
| کلیدواژه‌ها | ||
| Watershed Management؛ Monitoring and Assessment؛ Climate Scenarios؛ Runoff Retention؛ InVEST Model | ||
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آمار تعداد مشاهده مقاله: 31 |
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