期刊
ENVIRONMENTAL EARTH SCIENCES
卷 71, 期 8, 页码 3465-3475出版社
SPRINGER
DOI: 10.1007/s12665-013-2736-x
关键词
Soil salinity; Soil salinization; investigation; Soil electrical conductivity; WET sensor; Agricultural irrigation; Water percolation
资金
- Doctor Postgraduate Technical Project of Chang'an University [2013G5290002, CHD2011ZY022]
- National Natural Science Foundation of China [41172212]
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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