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مدل‌سازی پراکنش مکانی گونه‌های Artemisia fragrans Willd. و A. chamaemelifolia Vill. در گرادیان ارتفاعی قزل‌اوزن- آق‌داغ خلخال | ||
| تحقیقات مرتع و بیابان ایران | ||
| مقاله 12، دوره 27، شماره 3 - شماره پیاپی 80، مهر 1399، صفحه 545-560 اصل مقاله (1.22 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijrdr.2020.127969.1899 | ||
| نویسندگان | ||
| مریم مولایی شام اسبی1؛ اردوان قربانی* 2؛ مهدی معمری3؛ عسگر حسینزاده1 | ||
| 1دانشجوی دکتری علوم و مهندسی مرتع، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران | ||
| 2دانشیار، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران | ||
| 3استادیار، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران | ||
| چکیده | ||
| هدف از انجام این تحقیق، مدل‌سازی پراکنش مکانی گونه‌های درمنه معطر (Artemisia fragrans) و درمنه بابونه‌ای ((A. chamaemelifolia در مراتع پروفیل ارتفاعی قزل‌اوزن- آق‌داغ شهرستان خلخال بود. به‌منظور مدل‌سازی، اطلاعات مربوط به گونه و عوامل رویشگاهی از قبیل توپوگرافی، عوامل خاکی و اقلیمی استفاده شده و مدل‌سازی پراکنش رویشگاه به‌روش رگرسیون لجستیک انجام شد. تمامی پارامترهای مؤثر بر توزیع گونه‌ها به‌صورت نقشه رستری تهیه شدند. سپس از تلفیق نقشه‌های عوامل تأثیرگذار بر توزیع گونه، نقشه پراکنش از طریق روش رگرسیون لجستیک پیش‌بینی شد. نتایج نشان داد که مهمترین عامل در پیش‌بینی مکانی گونه A. fragrans در منطقه، ارتفاع از سطح دریا است و با هر یک متر افزایش ارتفاع، حضور این گونه به میزان 88/0 درصد کاهش می‌یابد. همچنین نتایج نشان داد که حضور گونه A. chamaemelifolia با ارتفاع، میانگین درجه حرارت و پتاسیم خاک رابطه عکس دارد. برای تعیین میزان توافق مدل‌های پیش‌بینی با واقعیت زمینی نیز از شاخص کاپا (k) استفاده شد. ضریب کاپا برای گونه A.fragrans 91/0 و برای گونه A. chamaemelifolia 62/0 به‌دست آمد که به‌ترتیب بیانگر تطابق عالی و خوب مدل با واقعیت است. با توجه به نقشه پیش‌بینی تهیه شده، برای احیای مراتع ارتفاعات پایین‌دست، گونه A. fragrans و برای مراتع ارتفاعات بالاتر، گونه A. chamaemelifolia می‌توانند مورد توجه قرار گیرند. | ||
| کلیدواژه‌ها | ||
| درمنه؛ عوامل بوم‌شناختی؛ مدل‌سازی رویشگاه؛ A.fragrans؛ A. chamaemelifolia | ||
| عنوان مقاله [English] | ||
| Habitat prediction of Artemisia fragrans Willd. and A. chamaemelifolia Vill. in elevation gradient of Ghezelozan-Aghdagh, Khalkhal | ||
| نویسندگان [English] | ||
| Maryyam Molaei1؛ Ardavan Ghorbani2؛ Mehdi Moameri3؛ Asgar Hossainzadeh1 | ||
| 1PhD candidate of Rangeland Science and Engineering, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran | ||
| 2Associate Professor, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran, | ||
| 3Assistant Professor, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran | ||
| چکیده [English] | ||
| The purpose of this research was to model the spatial distribution of Artemisia fragrans and A. chamaemelifolia in Ghezelozen-Aghdagh elevation profile rangelands of Khalkhal city. For modeling, information about species and habitat factors such as topography, soil, and climatic factors were used, and habitat distribution modeling was performed by a logistic regression method. All parameters affecting the distribution of species were prepared as a raster map. Then, by combining the maps of the factors affecting the species distribution, the distribution map was predicted through the logistic regression method. The results showed that the most important factor in spatial prediction of A. fragrans in the region was altitude and with each meter of elevation, the presence of this species decreased by 0.88%. The results also showed that the presence of A. chamaemelifolia species was inversely related to altitude, mean temperature, and soil potassium. The Kappa index was used to determine the agreement between the prediction models with ground truth. The kappa coefficient was 0.91 for A.fragrans and 0.62 for A. chamaemelifolia, which indicates the excellent agreement of the model with reality. According to the prepared forecast map, A. fragrans and A. Chamaemelifolia species can be considered for lowland and higher altitude rangelands. | ||
| کلیدواژه‌ها [English] | ||
| Artemisia, Ecological Factors, Habitat Modeling, A.fragrans, A. chamaemelifolia | ||
| مراجع | ||
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