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- Title
暴雨对引黄灌区土壤与地下水环境影响研究.
- Authors
李平; 张彦; 梁志杰; 刘铎; 黄仲冬; 齐学斌; 李中生
- Abstract
In order to objectively assess the environmental effects of rainstorm on the soil and groundwater in the People's Victory Canal Irrigation Area, the rainstorm process occurring from July 9 to 20, 2016 was tracked and the influences of rainstorm to the salt salinity, groundwater depth and chemical composition were analyzed. Compared with the condition before the rainstorm, the rainstorm has driven soil desalinization of root layer above 80 cm, and soil salinity is decreased significantly in 0-10, 10-20 and 20-30 cm soil layers, which decreases by 63.74%, 68.20% and 33.41%, respectively. Furthermore, the average soil salinity of the 0-20 cm root layer in a typical area is 0.1879 mS/cm after rainstorm. Hydrological chemical phase classification type of regional groundwater cation is converted from Ca-Na type of before the rainstorm to Na-Ca type of after rainstorm. The total dissolved solids in regional groundwater is increased by 24.95% compared with that before the rainstorm, reaching 1,315.09 mg/L. Regional groundwater sodium adsorption is increased by 54.05% before rainstorm, reaching 32.94. The soil layer salinity is leached down, resulting in the flattened distribution in the 0-100 cm root layer, and enhances infiltration of groundwater with rainstorm droved, however, rainstorm has increased the risk of groundwater as an alkalization hazard to irrigation water.
- Publication
Yellow River, 2020, Vol 42, Issue 1, p67
- ISSN
1000-1379
- Publication type
Article
- DOI
10.3969/j.issn.1000-1379.2020.01.013