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[1]XI Weihua,LIU Rentao,ZHAO Juan,et al.Distribution of Soil Heavy Metal Contents in Caragana korshinskii Shrub Habitats on the Proximity of Expressway and Its Relationship With Soil Fractal Dimension in Deserted Region[J].Research of Soil and Water Conservation,2018,25(06):196-202.

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Distribution of Soil Heavy Metal Contents in Caragana korshinskii Shrub Habitats on the Proximity of Expressway and Its Relationship With Soil Fractal Dimension in Deserted Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 06 Page number: 196-202 Column: Public date: 2018-10-26

Title:: Distribution of Soil Heavy Metal Contents in Caragana korshinskii Shrub Habitats on the Proximity of Expressway and Its Relationship With Soil Fractal Dimension in Deserted Region

Author(s):: XI Weihua^1,2, LIU Rentao², ZHAO Juan², LIU Jianan²; 1. Breeding Base for the State Key Laboratory of Land Degradation and Ecological Restoration in Northwestern China, Ningxia University, Yinchuan 750021 China;
2. School of Life Science, Shanxi Normal University, Linfen, Shanxi 041000, China

Keywords:: arid aeolian sand region; expressway; soil heavy metal; fractal dimension; Caragana korshinskii plantation

CLC:: X53;S152.3

DOI:: -

Abstract:: In order to understand the distributions of heavy metals in Caragana korshinskii shrub habitats nearby expressway in deserted region, an investigation on soil heavy metal content and its relationship with different size of particles and fractal dimension of soil particles at the distances of 0, 30 m, 60 m, 100 m, 150 m and 200 m away from expressway, respectively, was carried. It was showed that: (1) there was a ‘single peak’， type for soil Pb, Cu, Cd, and Zn contents spatially ranging from 0 m to 200 m away from expressway, with the peaks at the distances of 150 m, 30 m, 0 m, 60 m, respectively; (2) with the increase of the distance from the expressway, soil clay contents increased, while soil fine sand contents decreased; the soil fractal dimension was found to present the slowly increasing trend; (3) the correlation analysis showed that there was a significant enrichment of soil Cd and Zn in clay, whereas there was no enrichment of soil Pb and Cu regarding in the particle sizes; there was no correlation between soil Pb, Cu, Cd, Zn and soil fractal dimension, while there was a linear correlation between soil clay, fine sand and soil fractal dimension, suggesting that there was remarkable changes of soil heavy metal contents on the proximity of expressway in shrub soil habitats. There was a strong accumulation of soil metals in clay fraction, which had the implications on diffusion range of soil heavy metal nearby expressway; in addition, the change of soil fractal dimension could characterize the soil physical and chemical properties in this deserted region.

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