نوع مقاله : مقاله پژوهشی
نویسندگان
1 نویسنده مسئول، عضو هیئت علمی دانشگاه زابل. زابل، ص.پ.538-98615
2 استادیار، دانشکده منابع طبیعی دانشگاه تهران، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج
3 کارشناس ارشد محیط زیست
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Mangrove forests are vegetative formations in tropical and subtropical latitudes at intertidal extension. These vegetative communities have rich biomass as food source in their established regions. Mangrove trees in their biotic extension produce large amount of litter which support food elements circulation in mangrove ecosystems and neighbor habitats. Govater bay is located at the South-East of Iran and is neighbor to Pakistan. Three estuaries with grey mangrove are joined to this small bay. Two estuaries including Govater and Bahu are in Iran and Jiva estuary is in Pakistanian side. Govater bay is a part of international wetland and Gando protected area and has unique ecological values. Mangrove stands of this wetland consist of a single species called Harra (Avicennia marina Frossk. (Vierh.)). In this survey, samples were collected using four transects in Govater and Bahu estuaries. Twigs with three repeats and sediment in two depths were collected in each transect. Some parameters such as N, P, and K, Organic carbon, humidity percent of stem, leaf and sediment were measured and statistic differences and correlations were studied. Based on the obtained results, the sediment of these forests are very rich in terms of P and K amount. There was significant difference between P and N in two different depths. In all stem and leaf parameters significant differences were observed between amount of these factors (expect carbon). Correlation between sediment parameters with twig and leaf was very low and only between K of surface samples with K of stem significant correlation was occured. Investigation on nutrient amount show important role of mangrove trees in food chain and habitat fertility.
کلیدواژه‌ها [English]
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