Search Results - ZHANG Ming

The mineral compositions of red and white plinthites separated from Zhijiang plinthitic red clay near Hangzhou, Zhejiang province were analysed by means of XRD and XRF. The total Fe, Mn and P contents in red plinthite were much higher than those in white one, whereas other elements in red plinthite...

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In order to understand the interactions between accumulation of organic matter and heavy metals in contaminated soil, an incubation experiment was conducted by adding different levels of organic materials, Pb and Cu to soil. The soil microbial biomass, CO₂-C released from incu...

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It was concluded from the results on a wide range texture of soils that particle composition of red soils could be analyzed effectively with a micro-pipette method (using 4.00 g soil and sampling 5 mL suspension) that have low coefficient of variation with accuracy and precision comparable to pipett...

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To understand the effects of vegetation types on soil particulate organic carbon and black carbon, samples of soil profiles under six types of forestry vegetations were collected from Wuyanling nature reserve, Taishun County, Zhejiang Province. The contents of total organic carbon, particulate organ...

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The differences of some soil fertility quality indicators between three soil types (quaternary red clay, red loam soil and red sandstone soil), four land use types (Forestry land, Orchard, Tea garden and upland) and two soil horizons (0-15 cm and 15-30 cm) were compared in this paper. The results sh...

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Total concentrations, chemical fractions and release potential of heavy metals in topsoil samples collected at 82 locations in Hangzhou City were measured to: i) assess their distribution in urban environments; ii) understand their differentiation as related to land use; and iii) assess their enviro...

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Predication of the long-term leaching of phosphorus (P) in the soil requires information of soil characteristics and behavior of P forms. This study assessed the mobility of different P forms in sandy soils that have been intensively loaded with P. Two sandy soils with different P concentration were...

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Three typical stagnic anthrosols, including silty-clayey yellow mottled paddy soil on fluvialmarine, blue clayey paddy soil, and gleyed blue clayey paddy soil, were collected from the Hangzhou-Jiaxing-Huzhou Plain to characterize vertical distribution of total organic C, particulate organic C, black...

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To understand the effects of human activity on accumulation of black carbon in soils, 251 surface soil samples were collected from Zhejiang Province. The soil samples had different land uses, including urban green space, road in urban area, manufacture area, vegetable land in suburban area, upland i...

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In order to understand the characteristics of accumulation and loss potential of soil phosphorus in urban complex land use system, this study, taken Huajiachi campus of Zhejiang University as a case, apply chemical analysis methods and GIS technology to explore the spatial heterogeneity in accumulat...

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Based on the measured data of soil nutrients and soil erosion, three afforestation methods, including controlled burning, full cultivation and bunch plantation, were compared. The results showed that both controlled burning and full cultivation enhanced erosion of soil and nutrients, caused decrease...

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The aim of this study was to investigate changes in chemical composition and surface chemical properties of black carbon (BC) in soils due to long-term natural oxidation. Black carbon samples were collected from several historical fire-impacted sites from Zhejiang Province and compared to BC that wa...

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Several pot experiments were done to test the contribution of soil pollution and atmospheric deposition to heavy metal accumulation in Chinese cabbage (Brassica campestris ssp. Pekinensis) in order to understand the effects of atmospheric deposition on heavy metal accumulation in the vegetable. The...

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Accumulation of phosphorus in soils increases the potential of P run off from the soils and thus affects environmental quality. In this study forty-nine soil samples from different residential areas in Hangzhou city, Zhejiang province were collected for analyzing forms and saturation degree of P, an...

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Heavy metal accumulation in the topsoil because traffic, industrial wastes and atmospheric deposition by sedimentation, impaction and interception is well documented. High concentrations of different heavy metals in soil may cause long-term risks to ecosystem and humans. Metals can be mobilized in s...

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In order to improve the high temperature wear resistance of H13 steel, a Fe-based alloy coating was successfully prepared on the surface of H13 steel by laser cladding.High temperature wear tests were carried out for the coating and H13 steel.The high-temperature wear performance of the coating and...

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The toxicity of lead (Pb) in urban soils is a major environmental concern. Understanding the accumulation and chemical forms of Pb in urban soils is necessary for prediction of the potential impact of soil Pb on human health. In this study, a total of 82 urban soil samples were collected from Hangzh...

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In order to understand the effect of heavy metal pollution on mineralization of soil organic matter and added plant materials, incubation experiments were conducted to study dynamics of mineralization and accumulation of particulate organic matter (POM) and microbial biomass C in three soils amended...

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In order to understand the enrichment mechanism of heavy metals in soil particulate organic matter (POM), four chemical species of Cu and Pb in the POM, including exchangeable, complex, organic tightly bound and mineral bound, were characterized by chemical selective extraction. As compared with &am...

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An incubation experiment over three years was conducted to investigate the effects of water regimes (unsaturated and alternating saturated-unsaturated conditions) and differences in black carbon (BC) materials, produced by carbonizing corn residues and bamboo at different temperatures (300,450, and...

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