污灌条件下重金属在耕作土壤中的积累与形态分布特征——以北京市通州区凤港减河污灌区农用地为例

陈志凡, 赵烨, 郭廷忠, 王水锋, 田青

Impacts of Sewage Irrigation on Heavy Metal Distribution and Chemical Fractions in Arable Soils: A Case Study About Sewage-irrigated Farmlands of the Fenggangjian River in Tongzhou District of Beijing, China

Zhi-fan CHEN, Ye ZHAO, Ting-zhong GUO, Shui-feng WANG, Qing TIAN

图5 距灌渠远近不同表土层和心土层中Cd和Pb的形态分布特征（t：表土层;s：心土层）

Fig. 5 The distribution of Cd and Pb fractions in topsoils and subsoils at four different distances from the irrigation channel