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Purpose <p>This study aimed to quantify the spatial and temporal dynamics of soil salinization in China over two decades and to identify the main anthropogenic drivers to inform region-specific mitigation strategies.</p> Materials and methods <p>We assessed the contribution of agricultural, industrial, groundwater extraction, and domestic pollutants using multifactorial regression analysis of electrical conductivity (EC) data from 264 soil samples in China (2003–2022). Regions were categorized according to land use for comparative analysis.</p> Results and discussion <p>Surface soil conductivity increased by 28.6% (0.07 to 0.09 dS/m) nationwide, with salinization higher in the north than the south. Agricultural and industrial activities were the primary drivers, while groundwater extraction and domestic pollution had secondary impacts. Driver analysis revealed significant regional differences: fertilizer use dominated in intensive agricultural areas, whereas groundwater over-extraction was key in eastern coastal and inland arid regions.</p> Conclusion <p>The above analysis shows that the situation of soil salinization in China is becoming increasingly urgent, and there is an urgent need to formulate specialized policies and implement effective interventions according to the situation in different regions in order to deal with the problem of soil salinization.</p>

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Analysis of the dynamic changes and driving factors of soil salinization in China based on multi-source data fusion

  • 期刊论文

  • 发表日期：

    2026年1月28日

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  • Yuqi Jiang,
  • Wangbo Zhang,
  • Xudong Feng,
  • Shuo Dai,
  • Yuxuan He,
  • Yi Zou,
  • Jianping Zuo,
  • Yijun Yao

摘要

Purpose

This study aimed to quantify the spatial and temporal dynamics of soil salinization in China over two decades and to identify the main anthropogenic drivers to inform region-specific mitigation strategies.

Materials and methods

We assessed the contribution of agricultural, industrial, groundwater extraction, and domestic pollutants using multifactorial regression analysis of electrical conductivity (EC) data from 264 soil samples in China (2003–2022). Regions were categorized according to land use for comparative analysis.

Results and discussion

Surface soil conductivity increased by 28.6% (0.07 to 0.09 dS/m) nationwide, with salinization higher in the north than the south. Agricultural and industrial activities were the primary drivers, while groundwater extraction and domestic pollution had secondary impacts. Driver analysis revealed significant regional differences: fertilizer use dominated in intensive agricultural areas, whereas groundwater over-extraction was key in eastern coastal and inland arid regions.

Conclusion

The above analysis shows that the situation of soil salinization in China is becoming increasingly urgent, and there is an urgent need to formulate specialized policies and implement effective interventions according to the situation in different regions in order to deal with the problem of soil salinization.