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پریا مهاجری پریسا علمداری احمد گلچین

چکیده

توپوگرافی تأثیرقابل‌توجهی بر روی مشخصات خاک های هر منطقه دارد. این پژوهش باهدف بررسی تغییرات برخی از ویژگی های فیزیکی و شیمیایی خاک های واقع‌شده در موقعیت های مختلف شیب یک ردیف پستی ‌و بلندی در منطقه دیلمان استان گیلان انجام گرفت. نتایج نشان داد که موقعیت های پایین شیب شامل پا و پنجه شیب دارای حداکثر پایداری خاکدانه، میزان کربن آلی، ظرفیت تبادل کاتیونی، فسفر قابل‌جذب و نیتروژن کل بودند درحالی‌که وزن مخصوص ظاهری برخلاف سایر پارامترها روند معکوسی داشت و در موقعیت قله شیب بیشتر از موقعیت های پایینی شیب بود. همچنین بررسی های صورت گرفته نشان داد که با افزایش عمق از میزان پایداری خاکدانه ها، کربن آلی، ظرفیت تبادل کاتیونی، فسفر قابل‌جذب و نیتروژن کل خاک کاسته شد درحالی‌که میزان رس و وزن مخصوص ظاهری روند معکوسی داشتند و با افزایش عمق میزان آن ها افزایش یافت. تفاوت بسیار فاحش در کیفیت خاک در موقعیت های مختلف شیب به‌طور عمده به تفاوت در میزان رطوبت دریافتی، سرعت فرسایش و تجمع مواد نسبت داده شد.

جزئیات مقاله

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ارجاع به مقاله
مهاجریپ., علمداریپ., & گلچینا. (2015). تأثیر موقعیت های شیب ‌بر خصوصیات فیزیکی وشیمیایی خاک های واقع‌ بر ردیف پستی‌ و بلندی در منطقه دیلمان استان گیلان. آب و خاک, 30(1), 162-171. https://doi.org/10.22067/jsw.v30i1.37607
نوع مقاله
علمی - پژوهشی