In the present study, Hg bioconcentration by Puffball (Lycoperdon perlatum) mushroom was investigated. Total Hg content of fruiting bodies and topsoil (0-10 cm layer) were determined by cold-vapour atomic absorption spectroscopy. For ten geographically distant sampling sites of Poland, Hg ranged from 0.91 ± 0.28 to 2.4 ± 0.4 (overall range 0.57-4.5) μg/g dry weight in the carpophores and 0.012 ...

The concentrations of potentially toxic elements (PTEs) in the topsoils Udachny mining area were determined. soil samples taken from 42 topsoil at a depth 0-20 cm. PTEs (Pb, Cd, Cr, Zn) analyzed by atomic absorption method on MGA-1000. In addition, pH and organic matter (humus) measured for each sample. potential ecological risk was quantitatively estimated site. most severe contamination study...

The Summitville Mine was a high-elevation (3500 m) gold mine in southwestern Colorado. The mine was abandoned in 1992, leaving approximately 200 ha of disturbance comprised partially of an open pit, a cyanide heap leach pad, and two large waste rock piles. Reclamation of these mine facilities is challenging due to extreme climatic conditions in conjunction with high acid-production potential an...

Mercury contamination is a serious problem in Chinese cities. In the present study, mercury contamination was evaluated in topsoil and subsoil samples collected in an urban area of Beijing. The level of total mercury in topsoil ranged from 12.1 to 8,487 ng g(-1), and a significant correlation (R = 0.58145, p < 0.0001) with polycyclic aromatic hydrocarbons was observed. Higher levels were genera...

Due to rapid industrialization and urbanization, environmental pollution has become a major concern in developing countries; therefore, the main objective of the current study is to determine heavy metal contents of Pb, and Ni for 42 topsoil samples, collected from 14 green spaces along the 1st and 2nd ring roads in Hamedan City in 2016. For this purpose, after determining some chemical propert...

The Qinghai–Tibetan Plateau is the highest plateau in world and sensitive to climate change. dynamics of soil enzyme activities microbial communities are good indicators alpine biochemical processes during warming. We collected topsoil (0–10 cm) subsoil (10–20 samples at altitudes 3200–4000 m; determined β-1,4-glucosidase (BG), cellobiohydrolase (CBH), β-1,4-N-acetyl-glucosaminidase (NAG) acid ...

Mineral sands mining involves stripping topsoil to access heavy-mineral bearing deposits, which are then rehabilitated to their original state, commonly pasture in south-west Western Australia. Organic amendments such as biosolids (digested sewage sludge) can contribute organic carbon to the rehabilitating system and improve soil chemical fertility and physical conditions. Use of biosolids also...

Abstract Due to the impacts of climate change and reduction in flow Mekong River, saline intrusion into inland has been an emergent pressing issue. The purpose this study is analyze effects various conditions (0–25‰) on changes some soil properties under laboratory conditions. Ten topsoil samples were collected from a depth 0–20 cm dry seasons rice–corn rotation fields with low salinity, Thanh ...

The impact of reforestation on soil organic carbon (OC), especially in deep layer, is poorly understood and deep soil OC stabilization in relation with aggregation and vegetation type in afforested area is unknown. Here, we collected topsoil (0-15 cm) and deep soil (30-45 cm) from six paired coniferous forests (CF) and broad-leaved forests (BF) reforested in the early 1990s in subtropical China...

Alleviation of subsoil acidity with lime or gypsum increases carbon (C) accumulation in deep layers by stimulating root growth and C nitrogen (N) inputs at depth. However, the effects these amendments combined N fertilization on soil CO2 emissions remain controversial. We evaluated superficial application N-fertilizer dynamics microbial use efficiency (MicCUE) samples taken from topsoil (0–10 c...