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شناسایی الگوهای ترسیب کربن تحت تاثیر ویژگیهای مختلف اقلیمی، خاکی و پستی و بلندی در مراتع شمال سبلان | ||
| نشریه علمی - پژوهشی مرتع و آبخیزداری | ||
| دوره 78، شماره 4، دی 1404، صفحه 491-512 اصل مقاله (1.49 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jrwm.2025.395345.1831 | ||
| نویسندگان | ||
| وحیده مرادزاده1؛ اردوان قربانی* 2؛ لیلا نعمتی شاماسبی1؛ مهدی معمری2؛ زینب حزباوی2؛ علی تیمورزاده1؛ بهزاد بهتری3 | ||
| 1گروه مرتع و آبخیزداری، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایران | ||
| 2گروه مرتع و آبخیزداری، دانشکده کشاورزی و منابع طبیعی، عضو پژوهشکده مدیریت آب، دانشگاه محقق اردبیلی، اردبیل، ایران | ||
| 3گروه منابع طبیعی، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| چکیده | ||
| مراتع بهعنوان یکی از بومسازگانهای طبیعی، نقش قابل توجهی در حفظ تعادل کربن در محیط زیست ایفا میکنند. تحقیق حاضر با هدف بررسی شناسایی الگوهای ترسیب کربن تحت تاثیر ویژگیهای مختلف اقلیمی، خاکی و پستی و بلندی در مراتع شمال سبلان، شهرستان مشگینشهر انجام شد. در این تحقیق، نمونهبرداری خاک از دو نوع رویشگاه علفزار و بوتهزار در چهار جهت جغرافیایی (شمال، جنوب، شرق و غرب) و از دو عمق مختلف خاک (۰-۱۵ و ۱۵-۳۰ سانتیمتر) انجام شد. در ادامه، اطلاعات مربوط به 24 ویژگی مختلف ثبت شد. بهمنظور انجام تحلیلهای آماری، نرمال بودن دادهها بررسی شد و از تحلیل واریانس یکطرفه (ANOVA) و آزمون چنددامنهای دانکن برای مقایسه میانگین ویژگیهای مختلف علفزار و بوتهزار و برای ارزیابی ساختار از تحلیل مؤلفههای اصلی (PCA) استفاده شد. نتایج نشان داد مقدار رس، سیلت، کربن آلی، کربن آلی ذرهای، نیتروژن کل و ترسیب کربن خاک در رویشگاه علفزار بهطور معنیداری بیشتر از رویشگاه بوتهزار است (p < 0.01). در مقابل، درصد شن، pH و هدایت الکتریکی در رویشگاه بوتهزار بهطور معنیداری بیشتر از علفزار مشاهده شد (p < 0.01). دامنه شمالی نسبت به دامنه جنوبی، مقادیر بالاتری از رس، سیلت، کربن آلی و ترسیب کربن داشت. همچنین، با افزایش عمق، مقدار کربن آلی، نیتروژن کل و ترسیب کربن کاهش یافت. در نهایت، PCA نشان داد که دو مؤلفه اول، بیشترین واریانس دادهها (30/36 درصد) را تبیین میکنند که درصد شن، بارش و کربن آلی بیشترین همبستگی را با مؤلفه اول و درصد شیب و لاشبرگ بیشترین همبستگی را با مؤلفه دوم دارند. بر همین اساس، ویژگیهای فیزیکی و شیمیایی خاک بهویژه در سطوح مختلف اقلیمی و پستی و بلندی تأثیرگذار بر ترسیب کربن هستند. | ||
| کلیدواژهها | ||
| استان اردبیل؛ پایداری بومسازگانهای مرتعی؛ سلامت خاک؛ شاخص بارش استاندارد شده؛ کربن آلی؛ مراتع شمال سبلان | ||
| مراجع | ||
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