metal pollution has become one of the most serious environmental problems resulting from human activity. phytoremediation utilizes plants to uptake contaminants and can potentially be used to remediate metal-contaminated sites. the present study investigates heavy metal uptake (cd, cr, and ni) from soil by different organs of populus alba and morus alba. for this purpose, cd (40, 80, and 160 mg...

in order to study the effect of afforestation in reduction oil pollution, one planted area in dezful, affected by pollutions from kuwaiti oil-wells burning was employed. six species, eucalyptus camaldulensis, eucalyptus microtheca, dalbegia sissoo, acacia salicina, acacia stenophylla, populus euphratica were selected. growth parameters, leaf samples and soil samples from different depths (0-30,...

During driving sleeve of cast-in-place piles by vibratory hammers, soils were squeezed into sleeve and then soil plugging was formed. The physic-mechanical properties of the soil plug have direct influence on the load transmission between the sleeve wall and soil plug. Nevertheless, the researches on this issue are insufficient. In this study, finite element and infinite element coupling model ...

Trees in cropped fields may improve nitrogen (N) use efficiency by intercepting leached N, but crop yield will be reduced if the trees compete strongly with crops for N. Ideal trees for intercropping will take up N from deeper soil layers not accessed by the crop species. Spatiotemporal aspects of tree nitrogen capture niches were investigated within a hedgerow intercropping system by placing 1...

Field and greenhouse studies have confirmed that wattle brush ash may cause marked increases in yield . when sugarcane is grown in certain midland soils. This effect was associated with the following factors: (i) decreased soil acidity (ii) increased P and K uptake by the plant (iii) increased soil exchangeable Ca, Mg, P, K and base saturation values (iv) reduced soil levels of A1 and Mn (v) re...

introduction: arsenic is a highly toxic metalloid in group 15 of periodic table. the information on environmental behaviour of arsenic, however, is still scarce. contamination of soils and water with arsenic and antimony due to their widespread industrial application and mining activities has raised serious environmental concerns. nearly all arsenic-contaminated soils results from human activit...

development of industry in sistan and baluchestan (sb) province in iran, has increased the amount of cadmium (cd) in industrial wastewater, which is used as a secondary water supply in this area. the present study aimed to investigate the variation of cd concentration in soil column and cultivated cucumber plant in greenhouse under short-term simulated industrial wastewater irrigation. to simul...