Distribution and evolution features of salinized soil in Hebei Plain |
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| Authors: | XU Guang-ming QI Jian-feng BI Pan BAI Gao-feng |
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| Affiliation: | 1Shijiazhuang University of Economics, Shijiazhuang 050031, China.2Hebei Key Laboratory of Sustainable Utilization and Development of Water Resources, Shijiazhuang 050031, China. |
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| Abstract: | In order to study the distribution and evolution features of saline soil, the correlations between the groundwater depth, salinity and salinization of soil are examined through analyzing the hydrometeorological data and distribution maps of saline soil, groundwater depth and salinity in 1957 and 2005. The results show that the area of salinization has generally decreased. The area of salinization decreases with the increasing groundwater depth, and the dynamic evolution characteristics appeared between the groundwater depth and area of salinization. The area of heavy salinization is greatest when the groundwater salinity is > 5 g/L, the area of moderate salinization is greatest when the groundwater salinity is between 2-5 g/L, the area of light salinization is greatest when the groundwater salinity is 1-2 g/L and the area of non-salinization is greatest when the groundwater salinity is <1 g/L. The area of heavy salinization was characterized with groundwater depth <2.5 m and salinity >1.8 g/L. The area of non-salinization was characterized with groundwater depth >4.0 m and salinity 0.2-1.5 g/L. |
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| Keywords: | Hebei Plain Salinization Groundwater depth Salinity Distribution characteristics |
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