نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مرتعداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران

2 گروه آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران

چکیده

سابقه و هدف:
آلودگی خاک به فلزات سنگین به دلیل پایداری درازمدت در خاک و تاثیرات مضر اکولوژیکی، به یک معضل زیست محیطیتبدیل شده است. در بررسی پوشش گیاهی در مناطق آلوده به فلزات سنگین، گیاهانی که توانایی رشد، سازگاری و جذب فلزات را دارند، ازجنبه های علمی، کاربردی و اقتصادی از اهمیت زیادی برخوردار هستند.9252 و 2222 متر از مرکز کارخانه سیمان کیاسر ساری واقع در استان مازندران، از خاک ،
مواد و روشها:
در این تحقیق در فواصل 522و پوشش گیاهی به روش سیستماتیک نمونهبرداری تصادفی انجام شد. تعداد 3 گونه گیاهی از قبیل گون، درمنه و پیچک با 3 تکرار و 3تیمار )در مجموع 22 نمونه از گیاه و 22 نمونه از خاک ریزوسفری( در غالب طرح آزمایشی بلوکهای کاملا تصادفی آزمایش شد. نمونه های جمع آوری شده برای انجام آزمایشات به آزمایشگاه منتقل و برای تعیین غلظت عناصر سرب، مس و روی از دستگاه ICP-OES استفاده شد.
نتایج و بحث:
نتایج آنالیز واریانس این تحقیق نشان داد که میزان عناصر سنگین با سطح اختلاف معنی دار ) (p ≤ 0.05 در خاک بیشتر ازگونههای مورد بررسی است. همچنین مقایسه میانگین دادهها نشان میدهد که در خاک و گونههای مورد بررسی منطقه با افزایش فاصله ازکارخانه مقدار مس و سرب دارای اختلاف معنیداری ) (p ≤ 0.05 است. این در حالی است که مس با افزایش فاصله روند افزایشی و سربروند کاهشی را نشان میدهد. عنصر روی با تغییرات فاصله در خاک اختلاف معنیداری را نشان نداد ولی در گونههای گیاهی معنیدار شدو از روند منظمی پیروی نکرد. همبستگی عناصر سنگین گونههای مورد بررسی با عناصر خاک نشان میدهد که گون و درمنه همبستگی معنیداری با عناصر مس ) r= 0.7 ( و سرب ) r=0.5 ( دارند ولی گونه پیچک فقط با عنصر روی همبستگی مثبت و معنیداری را نشان داد.
نتیجه گیری:
با توجه به پتانسیل بالای گونه های گون و درمنه در جذب فلزات سنگین میتوان از این گونهها در پالایش مناطق آلوده باشرایط اکولوژیکی یکسان استفاده کرد.

کلیدواژه‌ها

عنوان مقاله [English]

Cu, Pb and Zn heavy metal evaluation in soil and rangeland species (case study: around rangeland of Kiasar cement factory)

نویسندگان [English]

  • Reza Tamartash 1
  • Fatemeh Montazeri 1
  • Mohamadreza Tatian 1
  • Ghorban Vahab Zadeh 2

1 Range Management group, Natural Resources Faculty, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

2 Watershed Mnagement group, Natural Resources Faculty, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

چکیده [English]

Introduction:
Soil pollution by heavy metals in the soil due to long-term sustainability and ecologically harmful effects, has become an environmental problem. In the study of vegetation in polluted areas with heavy metals, plants have the ability to grow and absorption the heavy metals, viewpoint the scientific aspects, functional and economically very important.
Material and methods:
In this study 500, 1250 and 2000 meter from the center Kiasar cement of sari in Mazandaran province, soil and vegetation sampling was conducted using systematic random. Plant species such as Astragalus, Artemisia and Convolvulus with 3 replications and 3 treatments (a total of 27 samples and 27 samples of soil from the plant Rhizosphere) in the form of randomized complete block design was tested. The collected Samples transported to the laboratory for testing. The concentration of Pb, Cu, and Zn of the samples were determined by using ICP Device.
Results and discussion:
Results of statistical analysis of this study showed that heavy metals in soil had difference was greater than the species studied. So compare means of data show amount of cu and pb in soil and species had significant differences with increasing distance (p < 0.05). Copper increased with increasing distance and lead showed decreasing trend. Zn did not show any significant differences with the changes of distance in soil but it was significant differences in species and does not follow the regular process.
Conclusion:
Correlation of heavy elements of species with soil elements showed that Astragalus and Artemisia have significant Correlation with Copper and lead but Convolvulus just significant positive correlation with the Zn.

کلیدواژه‌ها [English]

  • Heavy Metal
  • Soil pollution
  • Cement factory
  • Kiasar
  • Mazandaran

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