ارتباط بین اشکال مختلف پتاسیم و کانی های رسی در واحدهای فیزیوگرافی متفاوت

آب و خاک

مقاله 8، دوره 29، شماره 6، بهمن 1394، صفحه 1578-1589   

نوع مقاله: مقالات پژوهشی

شناسه دیجیتال (DOI): 10.22067/jsw.v29i6.34905

نویسندگان

پریسا علمداری^* ؛ ویدا کامرانی؛ محمدحسین محمدی

دانشگاه زنجان

چکیده

جهت مطالعه ارتباط بین نوع کانی های رسی و اشکال مختلف پتاسیم، سه واحد فیزیوگرافی دشت دامنه ای(PP)، دشت رسوبی رودخانه ای (RAP) و اراضی پست(LL) واقع در ترانسکتی در جنوب شرقی آذربایجان شرقی انتخاب گردید. نمونه ها از 9 خاکرخ جمع آوری و اشکال مختلف پتاسیم در نمونه ها اندازه گیری شد. نتایج نشان داد که کانی های رسی موجود در واحدهای فیزیوگرافی تقریباً یکسان و عمدتاً شامل ایلیت، اسمکتیت، کائولینیت و کلریت است ولی فراوانی نسبی آن ها متفاوت می باشد. میزان ایلیت و اسمکتیت در دشت دامنه ای حداکثر مقدار را دارا بود و اسمکتیت در اراضی پست نسبت به دشت رسوبی رودخانه ای مقادیر بیشتری نشان داد. شرایط مختلف ژئومرفولوژیکی و در نتیجه تفاوت در مقادیر کانی های رسی باعث تفاوت معنی داری در شکل های پتاسیم گردید، طوریکه دشت دامنه ای نسبت به بقیه واحدها مقادیر بیشتری از اشکال پتاسیم را داراست. رابطه مثبت و معنی داری بین پتاسیم تبادلی با ایلیت (r2 = 0.81, P

کلیدواژه‌ها

اسمکتیت؛ ایلیت، شکل های مختلف پتاسیم؛ کانی های رسی

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