Influence of different fractions of heavy metals on microbial ecophysiological indicators and enzyme activities in century old municipal solid waste amended soil

Interactive Effect of Radioactive and Heavy-Metal Contamination on Soil Enzyme Activity in a Former Uranium Mine

“…Soil enzyme activities are used to evaluate the adverse effects of different pollutants on soil quality [11]. In the present study, ß-glucosidase and invertase activities, which are related to soil carbon cycles, were significantly lower in the former core area (ZT2, ZT3, ZT4) of the multi-metal deposit than in the control plots (ZT1, ZT5; Fig.…”

“…Soil pollution by heavy metals is an environmental problem, especially in mining areas, which impact soil quality and the regional environment [11]. Soil enzyme activities are indicators of the soil physico-chemical conditions and microbial status, which are sensitive to soil pollution.…”

“…The inhibition of ß-glucosidase and invertase activities by heavy-metal pollution has been reported by many scientists [8][9][10]. Most of them have suggested that heavy metals influenced the microbial community and soil respiration and have negative relationships with soil enzyme activities [11][12]. However, most of these studies have focused on the effect of individual heavy metals on soil enzyme activity or the incubation of heavy metals in soils in a laboratory, but have neglected the radiation effect on the soil environment [12][13].…”

Effects of gravel on soil and vegetation properties of alpine grassland on the Qinghai-Tibetan plateau

“…Secondly, the junction of gravel and fine mineral earth creates favorable micro-conditions for the decay of soil organic matter: a previous study observed numerous hyphae, other living forms and microbial activity on the surface of gravels (Certini et al, 2004). Thirdly, the gravel-dependent changes in soil moisture and temperature may influence soil enzyme activity (Wu et al, 2011), which is an important mediator for organic matter degradation, mineralization and nutrient recycling (Huang et al, 2013;Tripathy et al, 2014). Studies by Corti et al (1998Corti et al ( , 2002 found that rock fragments (skeleton or gravel) in stony soil with alteration contained substantial amount of organic carbon.…”

Ten years of application of sewage sludge on tropical soil. A balance sheet on agricultural crops and environmental quality

“…toxic trace elements, toxic substances and degree of contamination (Patel and Patra, 2014;Bhattacharyya et al, 2008). Likewise, quantifications of carbon microbial biomass (CMB) and soil basal respiration (SBR) are crucial to detect early symptoms of soil stress, caused by waste application (Santos et al, 2011;Tripathya et al, 2014). Both SMB and enzyme activity have a high sensitivity to waste application, even in conditions of small environmental changes in the soil (Tejada et al, 2014;Zhang et al, 2010).…”