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[1]TAN Shaojun,XIE Xianjian,WANG Li,et al.Spatial Distribution Characteristics of Cd and Evaluation on Cd Pollution Situation in Urban Area Based on GIS[J].Research of Soil and Water Conservation,2016,23(03):333-337.

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Spatial Distribution Characteristics of Cd and Evaluation on Cd Pollution Situation in Urban Area Based on GIS

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 03 Page number: 333-337 Column: Public date: 2016-06-28

Title:: Spatial Distribution Characteristics of Cd and Evaluation on Cd Pollution Situation in Urban Area Based on GIS

Author(s):: TAN Shaojun, XIE Xianjian, WANG Li, HU Yandan, HU Qin, HE Zhubi; College of Geography and Resources Science, Neijiang Normal University, Neijiang, Sichuan 641000, China

Keywords:: soil; city; Cd; GIS; pollution assessment

CLC:: X53;X833

DOI:: -

Abstract:: We selected Neijiang City proper as the study area, used GIS and combined single-factor pollution index method with statistical method to analyze the spatial distribution characteristics of soil Cd in Neijiang City. The contents of Cd in soil and pollution levels in Neijiang urban area are high, on the whole, Cd content of the topsoil (0—15 cm) is (0.823 9±0.429) mg/kg, which is greater than that in the deep soil (15—30 cm) where the content is (0.637 5±0.306) mg/kg, and they are higher than the national standard value in soil (0.3 mg/kg), respectively. The contents of Cd are different land-use types vary greatly. Meanwhile, the pollution degree of top soil is more severer than deep soil, and the moderate and severe pollution occupies 95.07% in surface; however, areas of slight and moderate pollution in deep soil occupy 82.26%, indicating the less contamination.

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