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Distribution and Transformation of Soil Phosphorus Forms under Different Land Use Patterns in an Urban Area of the Lower Yangtze River Basin, South China

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  • Weibing Yan

    (Geological Exploration Technology Institute of Jiangsu Province, Nanjing 210049, China)

  • Wenbo Rao

    (School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China)

  • Fangwen Zheng

    (School of Hydraulic and Ecological Engineering, Nanchang Institute of Technology, Nanchang 330029, China)

  • Yaning Wang

    (School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China)

  • Chi Zhang

    (School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China)

  • Tianning Li

    (School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China)

Abstract

Understanding the phosphorus (P) cycle is essential for preventing soil P loss, improving environmental quality, and promoting sustainable agriculture, particularly in urban areas. In this study, a representative city of the lower Yangtze River Basin, Nanchang, was chosen to systematically explore the distribution and transformation of soil P forms, which were extracted by an improved SEDEX method and measured by a standard phosphorus–molybdenum blue method under three land use patterns. The contents of soil P forms were the highest in the dryland and the lowest in the paddy field, with total P accumulation in the upper wasteland and paddy field soils but in the lower dryland soil. The pH value and grain size affected soil P form distributions to a variable extent from one land use pattern to another. The transformation of soil P forms was weak in the wasteland. It was first found that some detrital limestone P (De-P) was transformed into exchangeable P (Ex-P) in the paddy field with authigenic calcium-bound phosphorus (Au-P) and organic phosphorus (OP) transformation, and the transformation between Ex-P and iron-bound phosphorus (Fe-P), Au-P, and between Au-P and OP existed in the dryland. Land use pattern was the dominant driver for the P distribution and transformation of soil P. This study highlights the critical role of land use patterns in affecting the P cycle of soils in urban areas and the importance of sustainable urban land management.

Suggested Citation

  • Weibing Yan & Wenbo Rao & Fangwen Zheng & Yaning Wang & Chi Zhang & Tianning Li, 2024. "Distribution and Transformation of Soil Phosphorus Forms under Different Land Use Patterns in an Urban Area of the Lower Yangtze River Basin, South China," Sustainability, MDPI, vol. 16(5), pages 1-17, March.
  • Handle: RePEc:gam:jsusta:v:16:y:2024:i:5:p:2142-:d:1351357
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    References listed on IDEAS

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    1. Benjamin L. Turner & Tania Brenes-Arguedas & Richard Condit, 2018. "Publisher Correction: Pervasive phosphorus limitation of tree species but not communities in tropical forests," Nature, Nature, vol. 559(7713), pages 4-4, July.
    2. Benjamin L. Turner & Tania Brenes-Arguedas & Richard Condit, 2018. "Pervasive phosphorus limitation of tree species but not communities in tropical forests," Nature, Nature, vol. 555(7696), pages 367-370, March.
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