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
图4 地下水中硝酸盐同位素组成关系图
Fig. 4 The composition of nitrate isotope in groundwater