نتایج جستجو برای: Hor al-Azim Wetland
تعداد نتایج: 453364 فیلتر نتایج به سال:
the major aim of the present study was to investigate element (fe, ni, pb, v, zn) concentrations in sediment and different tissues of phragmities australis and typha latifolia in hor al-azim wetland southwest iran. sampling of sediments and aquatic plants was carried out during spring and summer 2014. results showed that the mean concentrations of elements in phragmities australis in root and...
Examining society’s preferences for any change in the status of wetlands, can translate their direct and indirect benefits into monetary values and provide useful information for the policy makers and planners. Hoor-al-Azim Wetland (also Hoor-al-Hoveizeh) is one of the four large wetlands with an area of over 125 thousand hectares located in Khuzestan province located in southwestern Iran on it...
The present study appear the concentration, source and origin of petroleum hydrocarbons in sediment core two station Hor Al- Azim at Al – Huwaiza ,total hydrocarbon measurement by spectroflurometer were these cores. Higher concentration (20.5 μg/g) dry weight depthe (0-5) cm (I) while lower conceatrations (1.5) μg/g depth (100-105) cm, Al-Azim (II) higher conceantration was (17.52) (1.73) (80 -...
Background and Objectives: Chemical storage of water cannot provide complete information about the extent of bioavailability of metals in the environment, while the study of this storage in the chain of water, sediment and macrobenthos can make the rate of rotation and storage risk more visible in ecosystems. Hur Al-Azim wetland is located in the west of Khuzestan Province. Large parts of it ha...
Background and Objective: Considering the fact that Iran is located in semi-arid climate and the harmful effects of dust storms on different ecosystems, this study aimed to identify and locate dust storms using fungal bio-aerosols (spores) and HYSPLIT model in southwestern region of Iran. Materials and Methods: MODIS satellite images and HYSPLIT model were used to investigate the temporal chan...
Hoor al-Azim wetland, are a large and permanent wetland area located between Iran and Iraq. By entering the flow to the wetland area, the geometry of the wetland, acts in the form of an inverted imperfect pyramid. So that by entering the water flow, the water level of wetland is simultaneous by increasing the surface. In this study by using the geometric relationships of pyramids, was acted t...
introduction hoor-al-azim wetland is one of the most important wildlife refuges and marine ecosystems in the south-west of iran where structure and function has been significantly affected by different changes during the 2 recent decades. changes in water regime of hoor-al-azim wetland and human activities are some of the most important factors. changes in water regime and anthropogenic activit...
The major aim of the present study was to investigate element (Fe, Ni, Pb, V, Zn) concentrations in sediment and different tissues of Phragmities australis and Typha latifolia in Hor al-Azim Wetland Southwest Iran. Sampling of sediments and aquatic plants was carried out during spring and summer 2014. Results showed that the mean concentrations of elements in Phragmities ...
Heavy metals are one of the most important organic pollutants in the environment due to human activities in the environment. This study was carried out to investigate heavy metals in 7 stations of Hur al-Azim wetland in the spring of 2018. The statistical population for measuring heavy metals such as Ni, Pb and vanadium with 3 repetitions included 21 sediment samples, 21 water samples, 21 Phrag...
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