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[1]LU Bao-liang,CHEN Ke-long,CAO Sheng-kui,et al.Spatial Distribution Characteristics of Soil Heavy Metals of Wetlands in Some Representative Regions around Qinghai Lake[J].Research of Soil and Water Conservation,2012,19(03):190-194.

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Spatial Distribution Characteristics of Soil Heavy Metals of Wetlands in Some Representative Regions around Qinghai Lake

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 03 Page number: 190-194 Column: Public date: 2012-06-20

Title:: Spatial Distribution Characteristics of Soil Heavy Metals of Wetlands in Some Representative Regions around Qinghai Lake

Author(s):: LU Bao-liang¹, CHEN Ke-long^1,2, CAO Sheng-kui^1,2, YANG Long¹, CHEN Sheng-yun³, MA Jin¹; 1. College of Life and Geography Science, Qinghai Normal University, Xining 810008, China;
2. Key Laboratory of Qinghai-Tibet Plateau Environment and Resources, Ministry of Education, Qinghai 810008, China;
3. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Keywords:: heavy metals; wetland soil; Qinghai Lake; spatial distribution; correlation

CLC:: X131.3

DOI:: -

Abstract:: The content and distribution characteristics of soil heavy metals such as Cu, Zn, Pb, and Cr in wetlands of Heima River wetlands around Qinghai Lake were studied. The results showed that the average contents of Cu, Cr, Pb and Zn in top soil of 0-10 cm depth were 16.38± 4.95 mg/kg, 65.46±7.34 mg/kg, 14.26±4.28 mg/kg, 46.35±7.27 mg/kg, respectively. In the horizontal direction to perpendicular the shore, the high contents of Cu, Cr, Pb and Zn appeared in the high water level and terrestrial area in wetlands, while low contents appeared in water and land transition zone. In the soil profile direction, different heavy metals showed different distribution.Cu presented a surface aggregation; distribution of Zn showed significant leaching and accumulation trends to soil profile; Pb increased first and then decreased along the soil profile; distribution of Cr showed a significant surface aggregation. Comparison among these elements showed the quality of soil in the study area maintained a good natural level. Cu, Zn, Pb and Cr exhibit a significant positive correlation with each other, which indicated that there was a homology among them in the study area.

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