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To study the spatial distribution characteristics of 10 heavy metals(As, Hg, Mo, Cd, Cr, Zn, Cu, Mn, Pb, Ti) in the soil of Dexing area, Semi-variance function is used to quantitatively describe the structural features of the spatial distribution and map the content distribution. The analysis shows, in addition to cadmium and lead, other elements fit relatively well, which reflects a good spatial...
This study is supported by the agriculture geochemical survey project in Dakang town, Jiangyou city. This paper studies the characteristics of heavy metal pollution in soil and then evaluates heavy metal potentialities in purple soil and paddy soil by adopting the potential ecological risk index(PERI) proposed by Hakanson. In purple soil, the data show that Hg, Cd, and Cu are the top three heavy metals...
To reveal the spatial variability of soil heavy metals under the influence of urban expansion, Yingxing city of Jiangsu province was selected as study area. Three transects were arranged in the urban-rural ecotone. 24 surface soil samples were collected. And the contents of heavy metals including Hg, Pb, Cu and Zn were measured and analyzed. The results were as follows: (1) Hg contamination and Pb,...
A systematic soil sampling including 32 topsoil samples and 80 subsurface soil samples were collected to investigate the distribution of heavy metal (HM) contents of soils in an industrial area of Zibo, China. Both the total contents and water soluble contents of 6 HM (Cu, Pb, Cd, Cr, As, Hg) were analyzed to assess the enrichment and mobilization ability of the elements. The relative cumulative frequency...
A total of 44 topsoil samples (depth=0~20 cm)and 8 deep-soil samples (depth=150 ~ 200 cm) were collected from urban green space and roadside green belt in Sanya in order to : (1) get the total content of eight heavy metals (Hg, As, Cr, Ni, Cu, Pb, Cd and Zn) in urban soils in Sanya; (2) to identify the degree of heavy metal contamination by comparing with other studied cities; and (3) to determine...
With the Sanlidong gangue wastelands as the subject, the basic status of vegetation restoration was investigated through sample plot survey. Gangue efflorescence and vegetation were conducted based on sampling so as to research and analyze the contents of nutrients and toxic elements between gangue efflorescence and vegetation. The reference vegetation was eastablished and the climax communities could...
At a stage of rapid economic development and urbanization in China, most cities are faced with such serious problems caused by environment deterioration as pollution, space press, afforestation degradation and disordering. Kunshan City, one of the most economically vigorous regions in China, has suffered a more prominent confliction between urbanization and environmental safety. In this paper, urban...
Soil samples were collected from farmland near a Pb-Zn factory in a karst area of Guangxi. The Zn, Pb, Cd, Hg, Cu, Ni, As, and Cr content of these samples were determined. The spatial distributions of these heavy metals, as well as the key factors affecting the distribution of the contamination, were examined. The results revealed that the means of Zn, Pb, Cd, and Hg concentrations in the samples...
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