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[1]YANG Guo-hai,TIAN Yao-wu.Spatial Distribution of Pb Concentration in Cedar(Cedrus deodara) Needles in the Center of Luoyang City[J].Research of Soil and Water Conservation,2011,18(06):252-255.

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Spatial Distribution of Pb Concentration in Cedar(Cedrus deodara) Needles in the Center of Luoyang City

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 06 Page number: 252-255 Column: Public date: 2011-12-20

Title:: Spatial Distribution of Pb Concentration in Cedar(Cedrus deodara) Needles in the Center of Luoyang City

Author(s):: YANG Guo-hai, TIAN Yao-wu; College of Forestry, Henan University of Science and Technology, Luoyang, He’nan 471003, China

Keywords:: cedar tree needle; Pb concentration; center of Luoyang City; spatial distribution

CLC:: S718.45;X131

DOI:: -

Abstract:: The concentrations of Pb accumulated by air pollution in the cedar(Cedrus deodara) tree needles from the center Luoyang City were measured. The needle samples were collected from 4 types of trees(SA: needles from 10~15-year-old trees, SB: fallen needles on the ground from 10~15-year-old trees, SC: needles from 20~30-years-old, and SD: fallen needles on the ground from 20~30-years-old) from 11 different locations with different degrees of metal pollution(residential, industrial, commercial and scenic regions). Concentrations of Pb were determined for types and sampling regions. Results showed that average value of Pb concentrations in the cedar tree needles was 1.606 mg/kg, and the city was slightly polluted by Pb. There were significant differences in the Pb among residential region, commercial region, industrial region and scenic region, and decreased in the order of industrial region > commercial region and residential region > scenic region. The spatial variability of test heavy metals in cedar needles was mainly affected by the industrial discharge of the metals. The concentration of Pb in cedar tree needles can objectively and better indicate the air environmental pollution of heavy metals. It has been proved that this method is a good way in environmental protection by means of using the concentrations of heavy metals in cedar tree needles.

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