江苏丰沛地区浅层地下水氟含量的空间变异与分布特征  

Spatial variability and distribution of fluorine contents in shallow groundwater in the Fengpei area,Jiangsu

作　　者：曹志洋[1,2] 冯启言[1,2] 吴晴晴[2] 孟磊[2] 

机构地区：[1]江苏省资源环境信息工程重点实验室,徐州221008 [2]中国矿业大学环境与测绘学院,徐州221008

出　　处：《水文地质工程地质》2010年第3期127-132,共6页Hydrogeology & Engineering Geology

摘　　要：在实地调查和采样分析的基础上,运用地质统计学方法,研究了丰沛地区浅层地下水氟含量的空间变异和分布特征。结果表明:丰沛地区62.75%的水样氟含量超过了国家饮用水标准,最大7.11mg/L,平均含量为1.51mg/L。其中39.22%的水样氟含量在1～2mg/L,3.92%的水样氟含量超过4mg/L。丰沛地区浅层地下水氟含量在一定范围内存在空间自相关性,具有明显的各向异性特征。在空间分布上,氟含量总体呈现西北、东南高和东北低的特征,氟含量大于1.00mg/L的面积约占整个研究区域的87.21%,大于2.20mg/L的面积约占12.12%。丰沛地区浅层地下水氟含量超过1.00mg/L的最大概率0.953,其中概率达到0.85以上的为高风险区域,面积297.18km2,占整个研究区的10.81%,主要分布在丰沛地区的西北部和东南部。Spatial variability and distribution of fluorine content in shallow groundwater in the Fengpei area are examined with the method of geostatistics based on field survey and sampling analysis data. The results showed that almost 62. 75% of the examined wells exhibit fluorine concentrations higher than the national standard limit for drinking water,with a maximum value and an average of 7. 11 and 1. 51 mg /L,respectively,and fluorine concentrations at 39. 22% wells range from 1. 00 to 2. 00 mg /L,and 3. 92% wells over 4. 00 mg /L. Fluorine contents in shallow groundwater in most of the areas （accounting for about 87. 21% ） are higher than 1. 00 mg /L,and some areas are over 2. 20 mg /L （about 12. 12% of the study area）. In general the northwest and southeast parts of the study area is of high fluorine contents,while in the northeast part the fluorine contents are low. The maximum probability of shallow groundwater with fluorine content over 1. 00 mg /L in the Fengpei area is 0. 953,and the high -risk area with probability over 85% occurs mainly in the northeast and the southeast parts of the study area,accounting for 10. 81% of the study area of 297. 18 km2.

关 键 词：丰沛地区 地下水 氟 空间变异 空间分布 

分 类 号：P641.12[天文地球—地质矿产勘探]