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Enzyme activities of urban soils under different land use in the Shenzhen city, China

Author

Listed:
  • Z.J. Shi

    (South China Botanical Garden, CAS, Guangzhou, P.R. China
    Shenzhen Institute of Landscape Gardening, Shenzhen, P.R. China)

  • Y. Lu

    (College of Natural Resources and Environmental Science, South China Agricultural University, Guangzhou, P.R. China)

  • Z.G. Xu

    (Shenzhen Institute of Landscape Gardening, Shenzhen, P.R. China)

  • S.L. Fu

    (South China Botanical Garden, CAS, Guangzhou, P.R. China)

Abstract

Urbanization has drastically changed soil properties, and an assessment of these changes is essential for soil management and soil health. The activities of urease, acid phosphatase, invertase and catalase, soil organic matter, pH, electrical conductivity (EC) and clay (< 0.01 mm) content of urban soils under two land-uses in the central built-up area of the Shenzhen city were investigated, and multivariate analysis was used to study the relationship between soil enzymes and soil physical-chemical properties. The results showed that invertase activity in roadside soil was significantly higher than that in urban park soil, whereas catalase activity was significantly higher in urban park soil. Soil organic matter had significant positive correlation with activities of invertase, urease and acid phosphatase but not with catalase. Soil pH had a significant negative direct effect on urease and acid phosphatase activity, but the effect was counteracted by positive indirect effect of soil organic matter. Soil EC had a positive direct effect on activities of catalase and there was a significant correlation between soil EC and soil catalase activities. Soil organic matter, soil pH and EC were the major factors influencing activities of soil enzymes.

Suggested Citation

  • Z.J. Shi & Y. Lu & Z.G. Xu & S.L. Fu, 2008. "Enzyme activities of urban soils under different land use in the Shenzhen city, China," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 54(8), pages 341-346.
    • Handle: RePEc:caa:jnlpse:v:54:y:2008:i:8:id:415-pse
    DOI: 10.17221/415-PSE
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