Soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainage
【Background】Soil salinization is a widespread abiotic stress that significantly impacts agricultural productivity and water resource management in the Yinbei region of Ningxia Province. This study explores the inter-annual dynamics of soil salinity and groundwater depth in areas within this region t...
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Science Press
2025-06-01
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| Series: | Guan'gai paishui xuebao |
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| Online Access: | https://www.ggpsxb.com/jgpxxben/ch/reader/view_abstract.aspx?file_no=20250606&flag=1 |
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| author | ZHANG Zhixiang LIU Songtao LI Qian HE Jun LI Haichao ZHANG Wei ZHANG Peipei MA Xiaolong ZHANG Hefei |
| author_facet | ZHANG Zhixiang LIU Songtao LI Qian HE Jun LI Haichao ZHANG Wei ZHANG Peipei MA Xiaolong ZHANG Hefei |
| author_sort | ZHANG Zhixiang |
| collection | DOAJ |
| description | 【Background】Soil salinization is a widespread abiotic stress that significantly impacts agricultural productivity and water resource management in the Yinbei region of Ningxia Province. This study explores the inter-annual dynamics of soil salinity and groundwater depth in areas within this region that use surface irrigation and subsurface drainage.【Method】Field investigations were conducted in Huinong, a representative area in northern Yinbei characterized by surface irrigation and subsurface drainage systems. Spatiotemporal variation of soil salinity and groundwater depth were analyzed using measured data with the help of correlation analysis and the inverse distance weighting (IDW) interpolation method.【Result】Temporally, areas with high soil salinity were accounting ting for 23.57% of the study region in April. In contrast, areas with soil salinity greater than 2 g/kg decreased by 52.99% in July and 26.3% in October, compared to April. Soil salinity decreased gradually with increasing groundwater depth, and the relationship between them was well fitted by a proposed model (R2＞ 0.82).【Conclusion】Soil salinity in the region peaks in spring and declines by summer, showing spatial variability influenced primarily by topography and irrigation practices. Salinity in the 40-100 cm soil layer was more responsive to groundwater depth than in the 0-40 cm layer. Maintaining a groundwater depth between 1.8 and 2.2 m can facilitate crop growth and reduce salinization risk. |
| format | Article |
| id | doaj-art-004226814f6c4e888396be75ceb2a16f |
| institution | OA Journals |
| issn | 1672-3317 |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Science Press |
| record_format | Article |
| series | Guan'gai paishui xuebao |
| spelling | doaj-art-004226814f6c4e888396be75ceb2a16f2025-08-20T02:21:26ZzhoScience PressGuan'gai paishui xuebao1672-33172025-06-01446526010.13522/j.cnki.ggps.2024382Soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainageZHANG Zhixiang0LIU Songtao1LI Qian2HE Jun3LI Haichao4ZHANG Wei5ZHANG Peipei6MA Xiaolong7ZHANG Hefei8School of Geography Science and Planning, Ningxia University, Yinchuan 750021, ChinaNingxia Polytechnic, Yinchuan 750021, China1. School of Geography Science and Planning, Ningxia University, Yinchuan 750021, China；3. China-Arab joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Regions, Yinchuan 750021, China1. School of Geography Science and Planning, Ningxia University, Yinchuan 750021, China;6. Ningxia (China-Arab) Key Laboratory of Resources Assessment and Environment Regulation in Arid Regions, Yinchuan 750021, ChinaNingxia Lingwu Bletton Beach National Nature Reserve Administration, Yinchuan 750400, ChinaSchool of Geography Science and Planning, Ningxia University, Yinchuan 750021, ChinaCollege of Forestry and Prataculture, Ningxia University, Yinchuan 750021, ChinaSchool of Geography Science and Planning, Ningxia University, Yinchuan 750021, ChinaCollege of Forestry and Prataculture, Ningxia University, Yinchuan 750021, China【Background】Soil salinization is a widespread abiotic stress that significantly impacts agricultural productivity and water resource management in the Yinbei region of Ningxia Province. This study explores the inter-annual dynamics of soil salinity and groundwater depth in areas within this region that use surface irrigation and subsurface drainage.【Method】Field investigations were conducted in Huinong, a representative area in northern Yinbei characterized by surface irrigation and subsurface drainage systems. Spatiotemporal variation of soil salinity and groundwater depth were analyzed using measured data with the help of correlation analysis and the inverse distance weighting (IDW) interpolation method.【Result】Temporally, areas with high soil salinity were accounting ting for 23.57% of the study region in April. In contrast, areas with soil salinity greater than 2 g/kg decreased by 52.99% in July and 26.3% in October, compared to April. Soil salinity decreased gradually with increasing groundwater depth, and the relationship between them was well fitted by a proposed model (R2＞ 0.82).【Conclusion】Soil salinity in the region peaks in spring and declines by summer, showing spatial variability influenced primarily by topography and irrigation practices. Salinity in the 40-100 cm soil layer was more responsive to groundwater depth than in the 0-40 cm layer. Maintaining a groundwater depth between 1.8 and 2.2 m can facilitate crop growth and reduce salinization risk.https://www.ggpsxb.com/jgpxxben/ch/reader/view_abstract.aspx?file_no=20250606&flag=1huinong irrigation area; soil water-salt transport; groundwater dynamics; inverse distance weight method (idw) |
| spellingShingle | ZHANG Zhixiang LIU Songtao LI Qian HE Jun LI Haichao ZHANG Wei ZHANG Peipei MA Xiaolong ZHANG Hefei Soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainage Guan'gai paishui xuebao huinong irrigation area; soil water-salt transport; groundwater dynamics; inverse distance weight method (idw) |
| title | Soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainage |
| title_full | Soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainage |
| title_fullStr | Soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainage |
| title_full_unstemmed | Soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainage |
| title_short | Soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainage |
| title_sort | soil salinity dynamics and optimal groundwater depth for salt control in farmland under surface irrigation and subsurface drainage |
| topic | huinong irrigation area; soil water-salt transport; groundwater dynamics; inverse distance weight method (idw) |
| url | https://www.ggpsxb.com/jgpxxben/ch/reader/view_abstract.aspx?file_no=20250606&flag=1 |
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