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针对地下水过量开采导致水资源短缺而严重遏制了呼和浩特市生态经济持续发展的现状,以呼和浩特市平原区为研究对象,对呼和浩特市浅层地下水进行系统取样分析,综合运用描述性分析,相关性分析,折线和饼图图示法,全面系统地研究了呼和浩特市浅层地下水水化学特征与矿化度演变规律。研究结果表明:①呼和浩特市浅层地下水中HCO32-和Ca2+平均浓度为333.525mg/L和82.9704mg/L,两值均较大,变异系数较小,反映了它们在地下水中的绝对含量较高,为地下水中的主要离子。②地下水中的Na+和Mg2+离子主要是来自各种硫酸盐,重碳酸盐和盐酸盐,地下水中的Ca2+离子主要来自各种硫酸盐和盐酸盐。地下水的矿化度高低主要是由水中的Mg2+和Cl-的浓度来控制的。③沿地下水水流方向,主要离子并不遵循随流程的增加而浓度增加的趋势,而是与地下水温呈现显著的负相关性。HCO32-和Ca2+离子与地下水温度的负相关最为显著,即温度越低时,离子的浓度反而越高。
In view of the shortage of water resources due to over-exploitation of groundwater and seriously deterred the sustainable development of ecological economy in Hohhot, taking the plain area of Hohhot as the research object, this paper systematically sampled and analyzed the shallow groundwater in Hohhot, and used descriptive analysis and correlation analysis , Broken line and pie chart icon, a comprehensive and systematic study of Hohhot shallow groundwater hydrochemical characteristics and evolution of salinity. The results show that: (1) The average concentrations of HCO32- and Ca2 + in shallow groundwater in Huhhot are 333.525mg / L and 82.9704mg / L, respectively. Both values are larger and the coefficients of variation are smaller, reflecting their higher absolute content in groundwater , The main ion in groundwater. (2) The Na + and Mg2 + ions in groundwater mainly come from various sulfates, bicarbonates and hydrochlorides. The groundwater Ca2 + ions mainly come from various sulfates and hydrochlorides. The degree of salinity of groundwater is dominated by the concentrations of Mg2 + and Cl- in the water. (3) Along the direction of groundwater flow, the main ions do not follow the trend of concentration increasing with the increase of process flow, but have a significant negative correlation with groundwater temperature. The negative correlation between HCO32- and Ca2 + ions and groundwater temperature is the most significant, that is, the lower the temperature, the higher the ion concentration.