نشریه محیط زیست طبیعی

بررسی قابلیت تجمع فلزات سرب و نیکل در ریشه و برگ اجتماعات دست‌کاشت درختان حرا (Avicennia marina) در بندر امام

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد، گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران

2 دانشیار، گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران و نویسندۀ مسئول

3 استاد، گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران

4 استادیار، گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران

چکیده

جنگل‏های مانگرو جزء اکوسیستم‌های جنگلی مستقر در اراضی کم‌شیب دانه‌ریز ساحلی گرمسیر و نیمه‏گرمسیرند. این اکوسیستم به‌دلیل وجود شرایط اکسیداسیون و احیا، آب‏گرفتگی دوره‏ای توسط جریان جزر و مد و محتویات بالای رس و مواد آلی، نقش مهمی در حذف فلزات و آلاینده‏های آلی از آب در اکوسیستم‏های ساحلی دارد و می‏تواند به‌منزلۀ منبعی برای ذخیرۀ فلزات عمل کند. با توجه به توسعۀ مراکز صنعتی در جنوب ایران، به‌منظور بهره‏مندی از خدمات این اکوسیستم و نقش این جنگل‏ها در به دام انداختن آلاینده‏ها و حذف آن‌ها از ستون آبی، با بررسی شرایط مورد نیاز برای رشد و توسعۀ این درختان، اقدام به کاشت آن‌ها در برخی مناطق ساحلی جنوب ایران ازجمله بندر امام در دورترین‌ نقطۀ شمال‏غربی خلیج‌فارس شده است. به‏منظور اندازه‏گیری فلزات سرب و نیکل در این اکوسیستم، 36 ایستگاه تصادفی انتخاب شد و نمونه‏برداری از رسوب، ریشه و برگ این درختان در اردیبهشت 1391 انجام گرفت. نتایج نشان داد میانگین غلظت فلز سرب در رسوب 71/19، ‏در برگ 95/5 و در ریشه 18/1 میکروگرم بر گرم و غلظت فلز نیکل نیز به‌ترتیب 8/77، 92/36 و 94/11 میکروگرم بر گرم است. علاوه بر این همبستگی آماری بالا و درخور توجهی بین فلزات تجمع‌یافته در رسوبات، ریشه و برگ مشاهده شد. یافته‌ها نشان داد میزان انتقال فلز سرب از رسوب به ریشه بیشتر از برگ است به‌طوری‌که میزان انتقال این فلز به ریشه 29/0 برابر رسوبات و در برگ 05/0 برابر رسوبات مشاهده شد. میزان انتقال فلز نیکل نیز به ریشه 74/0 برابر رسوب و در برگ 15/0 رسوب مشاهده شد.

کلیدواژه‌ها

عنوان مقاله [English]

An investigation on Accumulation of Lead and Nickel in Roots and Leaves of Planted mangrove Forest (Avicennia marina) in Imam Khomeini Port

نویسندگان [English]

  • Farzaneh Mansouri 1
  • afshin danehkar 2
  • Nematolah Khorasani 3
  • Sohrab Ashrafi 4

1 Master of Environmental Science, Faculty of Natural resource, University of Tehran

2 Associate Professor, Faculty of Natural resource, University of Tehran

3 Professor, Faculty of Natural resource, University of Tehran

4 Assistant Professor, Faculty of Natural resource, University of Tehran

چکیده [English]

Mangrove forests are tropical forest ecosystems located in coastal areas. Because of the redox conditions, periodic flooding, high content of clay and organic matters, Mangroves have an important role to remove heavy metals and organic pollutant from water and adjacent coastal ecosystems, and they often act as sinks for heavy metals. There has been an increase in development trend recently in Southern Iran. The pollution related to these developments has to somehow become under control. One of the ways to deal with such a problem is to benefit from ecosystem services. Mangroves can be a good solution to absorb and collect many pollutants from the water column. In some south coastal areas of Iran, including the local mudflats, these trees have been planted. In order to measure the concentration of Lead and Nickel (two of the most important polluting heavy metals) in mangrove ecosystem, 36 stations were randomly located. In each site, sediments, roots, and leaves of these trees were sampled on May 2012. The results indicated that the mean Lead concentration in the sediment, roots and leaves were 19.7, 5.95 and 1.18 mg/g respectively and the mean Nickel concentrations were 77.8, 36.92 and 11.94 mg/g respectively. There was a significant difference between metal concentration in tissues and sediments (P<0.05). Results depicted that the transition of lead to root tissue is more than leaves. The transition of lead to root tissues was 0.29 times the amount of sediments, and in leaves was 0.05, and transition of Nickel to root tissues was 0.74 of sediments while in leaves was 0.15.
 

کلیدواژه‌ها [English]

  • Mangrove forest
  • Heavy metals
  • Imam Khomeini Port
  • Persian Gulf
  • Coastal Environment
 
References
Aizpuru, M., F. Achard, and F. Blasco, 2000. Global Assessment of Cover Change of the Mangrove Forest Using Satellite imagery at Medium to High resolution. EEC Research Project no. 15017-1999-05 FIED ISP FR. Joint Research Center, Ispra.
Alongi, D.M. 2002. Present State and Future of the World’s Mangrove Forests. Environmental Conservation, 29(3): 331–349.
Baker, A.J. and P.I. Walker, 1990. Ecophysiology of Metal Uptake by Tolerant Plants. In: Shaw AJ (ed) Heavy Metal Tolerance in Plants; Evolutionary Aspects. CRC Press, Florida : 155-178.
Bryan GW. 1979. Bioaccumulation of Marine Pollutants. Phil Trans R Soc Lond B 286: 483–505.
Davari, A., A.Danehkar, N.Khorasani and A.Javanshir. 2010. An Investigation on Accumulation of Heavy Metals in Roots and Leaves of Avicennia marina the Sediment, Bushehr, the Persian Gulf. Journal of Natural Environment, 63: 267-276.
Defew, L.H., J.M. Mair, H.M. Guzman. 2005. An Assessment of Metal Contamination in Mangrove Sediments and leaves from Punta Mala Bay, Pacific Panama. Marine Pollution Bulletin 50: 547– 552.
Einollahi pir, F. 2012. Survey of Heavy Metals Cd, Cu, Ni and Zn Accumulation in the Sediment and Different Tissues of Avicennia marina in Gulf of Gowater, Oman Sea. Oceanography 3: 73-82.
Ellison, A.M., E.J. Farnsworth. 1996. Anthropogenic Disturbance of Caribbean Mangrove Ecosystems: Past Impacts, Present Trends and Future Disturbances. Biotropica 28: 549–565.
Ferletta, M., P.Bramer, A.K.Semesi, M.Bjork. 1996. Heavy Metal Contents in Macroalgae in the Zanzibar Channele an Initial Study. In: Bjork, M., A.K. Semesi, M.Perdersen, B.Bergman (Eds.), Current Trends in Marine Botanical Research in the East African Region. Proceedings on the Biology of Macroalgae and Seagrasses in the Western Indian Ocean. Sida, Stockholm: 332e346.
Furukawa, K., E. Wolanski and H. Mueller. 1997. Currentsand Sediment Transport in Mangrove Forests. Estuar.Coast. Shelf Sci. 44: 301-310.
Kalantarhormozi, S., M. Javaheri Baboli, A.Askari Sari. 2012. Role of Organic Matter on Nickle, Mercury and Cadmium Variation in Sediment and leaf of Mangrove Forest (Avicennia marina) in Imam Khomeini Coastal area. journal of Khoramshahr marine science and Technology 11: 68-76.
Kamaruzzaman, B. Y., M. Z.Rina Sharlinda, B.Akbar John, A.Siti Waznah. 2011. Accumulation and Distribution of Lead and Copper in Avicennia marina and Rhizophora apiculata from Balok Mangrove Forest, Pahang, Malaysia. Sains Malaysiana 40(6): 555–560.
Kannappan, T., M. Shanmugavelu, M.M. Karthikeyan. 2012. Concentration on Heavy Metals in Sediment and Mangroves from Manakudy Estuary. European Journal of Biological Sciences 4 (4): 109-113.
Kathiresan, K. and B.L. Bingham. 2001. Biology of Mangroves and Mangrove ecosystems. Advance. Mar.Biol. 40: 81-251.
Kathiresan, K. 2002. Greening the Blue Mud! Rev. Biol.Trop. 50: 869-874.
Lawton, J.R., Todd, A., Naidoo, D.K., 1981. Preliminary investigations into the structure of the roots of the mangroves, Avicennia marina and Bruguiera gymnorrhiza, in relation to ion uptake. New Phytologist 88: 713–722.
Macfarlane, G.R., Koller,C.E., Blomberg,S.P., 2007.Accumulation and partitioning of heavy metals in mangrove: A synthesis of field-based studies.Chemosphere 69: 1454-1464.
MacFarlane, G.R. 2002. Leaf Biochemical Parameters in Avicennia marina (Forsk.) Vierh as Potential Biomarkers of Heavy Metal Stress in Estuarine Ecosystems. Marine Pollution Bulletin 44: 244–256.
MacFarlane, G.R., A. Pulkownik, M.D. Burchett. 2003. Accumulation and Distribution of Heavy Metals in the Grey Mangrove, Avicennia marina (Forsk.)Vierh.: Biological Indication Potential. Environmental Pollution 123 :139–151.
Mansouri, F., A. Danehkar, S.Ashrafi. 2012. Effectivness Assesment of Grey Mangrove Plantation in Imam Khomeini Port Mudflat to Improve Shore Erea. 10th International Conference on Coasts, Ports and Marine Structures,Iran : 932-945.
Mermi  S.D.,  Machiwa  J.F., 2003.  Heavy  metal  contamination  of  mangrove  sediment and associated biota in DAR ES SALAAM, Tanzania, Tanzania Journal of  Science, 29(1): 61-75.
Nirmalkumar, I. J., P. R. Sajish, R. Nirmal Kumar, G. Basil, V. Shailendra. 2012. An Assessment of the Accumulation Potential of Pb, Zn and Cd by Avicennia marina (Forssk.) Vierh. In Vamleshwar Mangroves, Gujarat, India. Not Sci Biol, 3(1):36-40.
Odum, E.P. 1971. Fundamentals of Ecology. Philadelphia: W.B Saunders Company and Toppan Company: 574-575.
Parvaresh, H., Z. Abedi, F. Farshchi, M. Karami, N. Khorasani and A. Karbassi. 2011. Bioavailability and Concentration of Heavy Metals in the Sediments and Leaves of Grey Mangrove, Avicennia marina (Forsk.) Vierh, in Sirik Azini Creek, Iran. Biol Trace Elem Res, DOI 10.1007/s12-010-8891-y.
Shirvani Mahdavi, E., A. E. Khajeh Rahimi, H. Vakili Amini. 2012. Pb and Cd Accumulation in Avicennia marina from Qeshm Island, Persian Gulf. Iranian Journal of Fisheries Sciences, 11(4): 867-875.
Tam, N.F.Y., Y.S. Wong. 2000. Spatial Variation of Heavy Metals in Surface Sediments of Hong Kong Mangrove Swamps. Environmental Pollution 110:195–205.
Temu, S.S. 2001. Cost-recovery in Urban Water Supply and Sewerage Services. In: Francis, J., Mohammed, S. (Eds.), Consultative Meeting on Municipal Wastewater for the Eastern Africa Region. Report of the Meeting. United Nations Environment Programme (UNEP), UNEP/GPA Coordination Office. National Environment Management Council (NEMC) and Western Indian Ocean Marine Science Association (WIOMSA).
Thompson, M.F., N.M. Tirmizi. 1995. Mangrove Soil: Its Mineralogy and Texture. Rotterdam: A.A. Balkema: 431-439.
Wang F., J.S. Chen. 2000. Relation of Sediment Characteristics to Trace Metal Concentration: a Statistical Study. Wat Res, 34:694–698.
Wolanski, E. 1994. In Physical Oceanography Processes of the Great Barrier Reef. CRC, Boca Raton, Florida.
Wolanski, E. 1995. Transport of sediment in mangrove swamps. Hydrobiologia, 295: 31-42.
Wolanski, E., Y. Mazda, and P. Ridd, 1992. Mangrove Hydrodynamics. In: A.I.Robertson and D.M. Alongi (Eds.), “Coastal and Estuarine Studies :Tropical Mangrove Ecosystems”. American Geophysical Union, Washington, DC., USA: 43-62.
Woodroffe, C. 1992. Mangrove Sediments and Geomorphology. In : A.I.Robertson and D.M. Alongi (Eds.), “Coastal and Estuarine Studies:Tropical Mangrove Ecosystem”. American Geophysical Union,Washington DC., USA: 7-41.
 
 
 
 
 
نشریه محیط زیست طبیعی
دوره 68، شماره 1 - شماره پیاپی 1
خرداد 1394
صفحه 119-128