نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری، دانشکده منابع طبیعی و علوم زمین، دانشگاه کاشان
2 دانشیار، دانشکده منابع طبیعی و علوم زمین، دانشگاه کاشان
3 دانشیار، دانشکده کشاورزی و منابع طبیعی، دانشگاه لرستان
4 دانشیار پژوهشکده حفاظت خاک و آبخیزداری، سازمان تحقیقات، آموزش و ترویج کشاورزی تهران
چکیده
امروزه با افزایش جمعیت، کاربری اراضی بهمنظور برآورد نیازها تغییر کرده است که همین موضوع، اطلاع از وضعیت آینده کاربری اراضی را با اهمیتتر کرده است. بررسی تغییرات کاربری اراضی، نقش اساسی در مطالعات زیستمحیطی، مدلسازی و شبیهسازی تغییرات کاربری اراضی و مدیریت منابع آب داشته، مدیران را در برنامهریزی بهتر کاربری اراضی یاری میدهد. لذا در این پژوهش، ابتدا نقشه کاربری اراضی حوزه آبخیز رحیمآباد برای سالهای 1999 و 2016 بهترتیب با استفاده از سنجندههای ETM+ و Landsat 8 در محیط نرمافزار ENVI5.3 استخراج شد که ضریب کاپا برابر 95 درصد و صحت کلی برابر 97 درصد، حاکی از دقت بالای نقشه کاربری 2016 بود. سپس، نقشههای عوامل مؤثر بر تغییر کاربری اراضی شامل نقشههای فاصله از جاده، فاصله از رودخانه، فاصله از شهر، فاصله از روستا، فاصله از گسل، زمینشناسی، بافت خاک، بارش، تبخیر، مدل رقومی ارتفاع، شیب، سطح آب زیرزمینی و مقدار تابش خورشیدی در محیط ArcGIS 10.6 تهیه شدند. آنگاه، با استفاده از رگرسیون لجیستیک، نقش عوامل مؤثر بر کاربری اراضی تعیین شد و برای ارزیابی رگرسیون لجیستیک، از منحنی ROC استفاده شد. در نهایت، نقشه کاربری اراضی حوضه مطالعاتی برای سال 2026 با استفاده از مدل CLUE-s شبیهسازی شد. نتایج حاصل از پژوهش حاضر، نشان داد که میزان سطح زیر منحنی ROC برای کاربریهای مرتع، اراضی دیم، اراضی آبی، پهنه آبی و مسکونی بهترتیب برابر 0.9، 0.88، 0.9، 0.92 و 0.91 است که بیانگر دقت قابلقبول روش رگرسیون در بررسی عوامل مؤثر بر کاربری اراضی است. همچنین، بیشترین تغییرات کاربری اراضی در سال 2026، مربوط به تبدیل کاربری مرتع به کاربری دیم خواهد بود و 6.47 درصد کاربری مرتع، کاهش و 18 درصد کاربری دیم افزایش خواهد یافت.
کلیدواژهها
عنوان مقاله [English]
Simulation of land use map in 2026 using CLUE-s model in Rahim-Abad Basin
نویسندگان [English]
- Ali Seif 1
- Hoda Ghasemieh 2
- Hossein Zeinivand 3
- Mehran Zand 4
1 PhD Student, Faculty of Natural Resources and Earth Sciences, University of Kashan, Iran
2 Associate Professor, Faculty of Natural Resources and Earth Sciences, University of Kashan, Iran
3 Associate Professor, Faculty of Agriculture, Lorestan UniversityUniversity, Khoramabad, Iran
4 Associate Professor, Soil Conservation and Watershed Management Research Institute, Agricultural Research, Education and Extension Organization (AREEO) of Tehran
چکیده [English]
Today, with the increase in population, land use has been changed to meet the needs, which has made it more important to know the future status of land use. Investigating land use changes plays a fundamental role in environmental studies, modeling and simulation of land use changes and water resources management and helps managers in better land use planning. So, in this research, first, the land use map of Rahim-Abad Basin was extracted for 1999 and 2016, using ETM+ and Landsat 8 sensors in ENVI5.3 software environment, with a kappa coefficient of 95% and overall accuracy of 97% that indicates the high accuracy of the 2016 map.Then, the maps of affecting factors on land use change including maps of distance from the road, distance from the river, distance from the city, distance from the village, distance from the fault, geology, soil texture, rainfall, evaporation, elevation digital model, gradient, groundwater level and the amount of solar radiation were prepared in Arc-GIS 10.6.After, using logistic regression, the role of effective factors on land use was determined and the Relative Operating Characteristics curve (ROC) was used to evaluate the logistic regression. Finally, the land use map of the study basin was simulated for 2026 using the CLUE-s model.Results showed that the area under the ROC curve was 0.9, 0.88, 0.9, 0.92 and 0.91 for grasslands, rain-fed lands, irrigated lands, water and, residential zones, respectively, which expresses the acceptable accuracy of the regression method in investigation of affecting factors on land use.Also, the most changes of land use in 2026 would be related to conversion of rangelands to rainfed lands, and 6.47% rangelands would decrease and 18% rainfed lands would increase.
کلیدواژهها [English]
- CLUE-s
- Land use
- Logistic regression
- Rahim-Abad Basin
- ROC
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