Abstract
Afforestation in sandy soils can cause soil acidification and affect Cu and Zn release. The behaviors of Cu and Zn release from contaminated arable sandy soils were investigated in the laboratory with the methods of simulated acidification of the soils. The results showed that soil acidification could change chemical forms of Cu and Zn in the soils, impel the transformation of Cu and Zn from carbonate associated fractions to exchangeable, organic matter and oxides associated fractions, and thus increase the release potential of Cu and Zn in the soils. The effect of the acidification on Zn leaching was more significant than that of Cu. Water solubility of Cu and Zn in the soils was increased with decreasing pH, and the solubility of Cu and Zn was increased exponentially at pH 3.8–4.5, and 6.2–6.5, respectively.
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Foundation item: This paper was supported by the National Key Basic Research Support Foundation (NKBRSF) of China (No. 2005CB121104) and the National Natural Science Foundation of China (No. 40471064).
Biography: ZHANG Ming-kui (1964-), male, Ph.D., Professor in College of Natural Resource and Environmental Sciences, Zhejiang University, Hangzhou 310029, P. R. China.
Responsible editor: Zhu Hong
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Ming-kui, Z., Calvert, D.V. Simulation study on copper and zinc release from contaminated sandy soils due to acidification. Journal of Forestry Research 16, 289–292 (2005). https://doi.org/10.1007/BF02858191
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DOI: https://doi.org/10.1007/BF02858191