Effects of heavy metals from road traffic on the community structure and spatial distribution of cropland soil animals
Cropland soils located along the No. 104 national highways of Shangyu City, Zhejiang Province were significantly contaminated with heavy metals from road traffic. This paper was to estimate whether soil animals and heavy metal concentrations in coincide in polluted by emissions from automobile exhau...
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Veröffentlicht in: | Sheng tai xue bao 2010-01, Vol.30 (18), p.5001-5011 |
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Format: | Artikel |
Sprache: | chi ; eng |
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Zusammenfassung: | Cropland soils located along the No. 104 national highways of Shangyu City, Zhejiang Province were significantly contaminated with heavy metals from road traffic. This paper was to estimate whether soil animals and heavy metal concentrations in coincide in polluted by emissions from automobile exhaust. So the concentration of heavy metals, and their effects on soil animal communities, were investigated in five contaminated sites and one uncontaminated control site. Soil samples were collected from a sampling area of 30 cm x 30 cm at three depths (0-5 cm, 5-10 cm, 10-15 cm) five times each site over four seasons. Soil animals were extracted using Tullgren and Baermann funnels. Soil pH was measured with TFW-VI acidity meter; organic carbon was determined by K sub(2) Cr sub(2) O sub(7) oxidation method and bulk density of soils by a simple method; total N was determined with Kjeldahl method and total K by flame photometer; total P was analyzed using the colorimetric method with molybdenum in sodium hydroxide. An X-ray fluorescent analysis was used to determine the concentrations of heavy metal in the study area (Pb, Cu, Zn, Cr, and Ni). Statistical analysis was performed with the SPSS 13.0 program package. The results indicated that Pb, Cu, Zn, Cr and Ni were higher than the control group, the datas showed that total P, pH, Pb, Cu, Zn, Cr and Ni were significantly different between the five sampling sites and the control group (P |
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ISSN: | 1000-0933 |