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

Weibing Yan, Wenbo Rao (), Fangwen Zheng, Yaning Wang, Chi Zhang and Tianning Li
Additional contact information
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

Sustainability, 2024, vol. 16, issue 5, 1-17

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.

Keywords: phosphorus form; influences; phosphorus transformation; soil profiles; land use pattern; Nanchang (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/16/5/2142/pdf (application/pdf)
https://www.mdpi.com/2071-1050/16/5/2142/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:16:y:2024:i:5:p:2142-:d:1351357

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().