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7 不同地层区岩石与土壤硒含量
Jxw4—蓟县系雾迷山组四段;Jxg4—蓟县系高于庄组四段;Jxg2—蓟县系高于庄组二段;Jxw3—蓟县系雾迷山组三段;Chch4—长城系串岭沟组四段;Chc2—长城系常州沟组二段
Fig.7 Concentrations of selenium in rocks and soils in different strata
Jxw4—the fourth member of Wumishan formation;Jxg4—the fourth member of Gaoyuzhuang formation;Jxg2—the second member of Gaoyuzhuang formation;Jxw3—the third member of Wumishan formation;Chch4—the fourth member of Chuanlinggou formation;Chc2—the second member of Changzhougou formation