Abstract
This study on the effect of land use on soil quality in relation to forms and toxicity of aluminum in red soils (Ultisol) in southeast China showed that in general, the extractable order for soil active aluminum by four extractants was: NaOH 0.5 mol/L > HCl 1 mol/L > NH4Ac 1 mol/L > KCl 1 mol/L. Different uses of the red soils, developed from Quarternary red clay with the similar hydrogeological environment, greatly affected the amount of active aluminum, especially the exchangeable Al3+. The order of exchangeable Al3+ (Al mg/kg) in the red soils with different land uses was: barren land (740) > tea garden (663) > peach garden (432) > citrus garden (234) > paddy soil (127). The content of water soluble aluminum in the red soils was highly sensitive to soil acidity.
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Project (CG, 999011809) supported by the Major State Basic Research & Development (973) Programme of China.
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Ye, Lj., Xie, Zm., Huang, Cy. et al. Aluminum extractability in red soils as influenced by land use patterns. J. Zheijang Univ.-Sci. A 3, 223–227 (2002). https://doi.org/10.1631/BF03396442
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DOI: https://doi.org/10.1631/BF03396442