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Assessment of soil salinization based on a low-cost method and its influencing factors in a semi-arid agricultural area, northwest China

Environmental Earth Sciences volume 71, pages 3465–3475 (2014)Cite this article

Abstract

An investigation of soil salinization was carried out in the Nanshantaizi area (Northwest China) with WET Sensor. This device can measure such soil parameters as bulk soil electrical conductivity, water content, and the pore water electrical conductivity that are important for soil salinization assessments. A distribution map of soil salinization was produced, and the factors influencing soil salinization and its processes were discussed in detail. The study shows that moderately salinized to salt soils are mainly observed in the alluvial plain, where groundwater level is high and lateral recharge water contains high salinity. Nanshantaizi is covered by slightly salinized soils. The soil salinization distribution estimated by WET Sensor is generally consistent with the actual levels of salinization. Soil salinity in Nanshantaizi is mostly of natural origin and accumulated salts could leach to deeper soils or aquifers by water percolation during irrigation. Groundwater evaporation, groundwater level depth and quality of recharge water are important factors influencing soil salinization in the alluvial plain.

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Acknowledgments

The research was supported by the Doctor Postgraduate Technical Project of Chang’an University (2013G5290002 and CHD2011ZY022) and the National Natural Science Foundation of China (41172212). We are thankful to the anonymous reviewers for their useful comments that have helped us a lot in improving the quality of our paper.

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Authors and Affiliations

  1. School of Environmental Science and Engineering, Chang’an University, No. 126 Yanta Road, Xi’an, 710054, China

    Jianhua Wu, Peiyue Li, Hui Qian & Yuan Fang

  2. Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, No. 126 Yanta Road, Xi’an, 710054, China

    Jianhua Wu, Peiyue Li, Hui Qian & Yuan Fang

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  1. Jianhua Wu
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  2. Peiyue Li
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  4. Yuan Fang
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Correspondence to Peiyue Li.

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Wu, J., Li, P., Qian, H. et al. Assessment of soil salinization based on a low-cost method and its influencing factors in a semi-arid agricultural area, northwest China. Environ Earth Sci 71, 3465–3475 (2014). https://doi.org/10.1007/s12665-013-2736-x

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  • DOI: https://doi.org/10.1007/s12665-013-2736-x

Keywords

  • Soil salinity
  • Soil salinization investigation
  • Soil electrical conductivity
  • WET sensor
  • Agricultural irrigation
  • Water percolation