基于水环境化学及稳定同位素联合示踪的土地利用类型对地下水体氮素归趋影响

路路,戴尔阜,程千钉,邬真真

The sources and fate of nitrogen in groundwater under different land use types: Stable isotope combined with a hydrochemical approach

LU Lu,DAI Erfu,CHENG Qianding,WU Zhenzhen

表3 地下水水环境化学特征统计信息(mg/L)

Tab. 3 The statistics on water chemicals in groundwater (mg/L)

统计量 极小值 极大值 均值 标准差 Na+ 1.69 101.83 30.75 26.56 K+ 0.31 10.2 1.74 2.45 Mg2+ 2 40.56 15.97 10.47 Ca2+ 6.2 51.54 24.73 12.38 Cl- 0.11 58.28 21.56 23.34 SO42- 0.04 52.48 12.29 14.39 HCO3- 7.86 75.72 49.67 22.18 Fe2+ Nulla 6.69 1.3 2.42 Mn2+ Nulla 1.44 0.3 0.44