| 江西兴国县溶解性总固体分布规律初探 |
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| 关键词:groundwater total dissolved solids spatial distribution Xingguo County |
| 基金项目:中国地质调查局地质调查项目(编号: DD20179262);国家自然科学基金项目(编号: 41240021; 41330314) |
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| 摘要: |
| Characteristics of Total Dissolved Solids in Xingguo County, Jiangxi Province |
| This paper focuses on the total dissolved total solid which is the total amount of the ion component of the groundwater, and analyzes its distribution and evolution in Xingguo County by statistical description, correlation analysis and ion ratio method. The results showed that total dissolved solids of groundwater content of 89.8% samples in Xingguo County was generally within 200 mg/L, and there were significant differences in spatial distribution. The variation coefficients of dissolved total solids in pore water, clastic rock pore-fissure water, metamorphic rock fissure water and granitoid fissure water are 0.37, 0.77, 0.56 and 0.59 respectively. According to the analysis of the groundwater quality data of the period of 1977—2018, the total dissolved solids in the groundwater of Xingguo County, regardless of the single point value or the mean value, showed a significant increase trend, with the increase of the content being 24.23%~458.13%. In terms of spatial distribution, the distribution of dissolved total solids has a good correlation with the elevation. The groundwater with high total dissolved solids is generally distributed below 400 m. The increase of groundwater development in Xingguo County has changed the drainage conditions of groundwater, accelerated the leaching and ion exchange between the ground water and the weathering components of rock and rock minerals, reduced the concentration of Na+, and increased the content of Ca2+ and Mg2+. |
| GONG Lei,WANG Xin-feng,SONG Mian,ZHANG Tao,,WU Xi.2018.Characteristics of Total Dissolved Solids in Xingguo County, Jiangxi Province[J].Acta Geoscientica Sinica,39(5):587-592. |
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