| 天津市蓟州区富硒土壤成因与土壤硒来源研究 | 
| 谢薇, 杨耀栋, 侯佳渝, 李国成, 菅桂芹 | 
| Studies on causes and influential factors of selenium-enriched soils in Jizhou district of Tianjin | 
| Wei XIE, Yao-Dong YANG, Jia-Yu HOU, Guo-Cheng LI, Gui-Qin JIAN | 
| 图1 蓟州北部地区土壤采样点位分布 | 
| Fig.1 Soil sampling locations in northern Jizhou | 
|   |