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应用数理统计学及地质统计学方法,对安徽省淮北平原73个浅层地下水中氟离子、溶解性总固体数据进行分析。结果表明,氟离子、溶解性总固体均服从对数正态分布,变异系数分别为0.77、0.36。地下水氟离子、溶解性总固体半方差函数分别满足高斯模型、指数模型,氟离子在49.00 km内存在自相关,溶解性总固体在7.21km内存在自相关。氟离子浓度>1 mg/L的区域分布在淮北平原东北部、中部。淮北平原溶解性总固体>1 g/L的地区主要分布在宿州和淮北,其空间分布特征与氟离子相似。
Using mathematical statistics and geostatistics methods, the data of total fluoride and total dissolved solids in 73 shallow groundwater in Huaibei Plain of Anhui Province were analyzed. The results showed that the fluoride ions and total dissolved solids all obey the logarithm normal distribution with coefficients of variation of 0.77 and 0.36 respectively. The groundwater fluoride ion and total dissolved solids solubility met the Gaussian model and the exponential model respectively. There was an autocorrelation of fluoride ions within 49.00 km, and the total dissolved solids were self-correlated within 7.21 km. Fluorine ion concentrations> 1 mg / L are distributed in northeast and central part of Huaibei Plain. The areas of total dissolved solids> 1 g / L in Huaibei Plain are mainly distributed in Suzhou and Huaibei, and their spatial distribution is similar to that of fluoride ions.