TY - Acta Geographica Sinica A1 - LU Lu, DAI Erfu, CHENG Qianding, WU Zhenzhen T1 - The sources and fate of nitrogen in groundwater under different land use types: Stable isotope combined with a hydrochemical approach Y1 - 2019-09-25 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 1878 EP - 1889 VL - 74 IS - 9 UR - {https://www.geog.com.cn/EN/10.11821/dlxb201909013} N1 - 10.11821/dlxb201909013 ER -