CAJ | 학술논문

以北京郊区典型的设施菜地为研究对象，研究了土壤中Cd、Cr、Cu、Zn、Pb和As 6种重金属的含量和剖面分布特征。结果表明：除As外，Cd、Cr、Cu、Zn和Pb含量随着土壤垂直剖面（0~100 cm）的加深而明显下降，表层土壤中（0~20 cm）Cd、Cr、Zn、Cu和Pb的含量，设施菜地比对照（露天菜地）分别提高了21.8%、11.3%、29.4%、27.6%和5.8%，而As的含量变化不大；在土壤80~100 cm的剖面中，Cd、Cr、Cu、Zn、Pb和As 6种重金属的含量比对照分别增加了12.5%、6.7%、1.4%、1.5%、17.3%和1.3%。此外，随着种植年限的增加，表层土壤中的Zn、Cr、Cd、Cu和Pb的含量也显著增加，其积累速率分别为4.584、0.9338、0.0133、1.243 mg·kg-1·a-1和0.6417 mg·kg-1·a-1。6种重金属含量与土壤中的有机质、全氮含量都呈显著的正相关关系，Zn、Cr、Cd、Cu和Pb含量与全磷含量也表现出显著的正相关关系；因此有机肥、化肥的施用可能是设施菜地土壤中重金属含量升高的重要原因。
이북경교구전형적설시채지위연구대상，연구료토양중Cd、Cr、Cu、Zn、Pb화As 6충중금속적함량화부면분포특정。결과표명：제As외，Cd、Cr、Cu、Zn화Pb함량수착토양수직부면（0~100 cm）적가심이명현하강，표층토양중（0~20 cm）Cd、Cr、Zn、Cu화Pb적함량，설시채지비대조（로천채지）분별제고료21.8%、11.3%、29.4%、27.6%화5.8%，이As적함량변화불대；재토양80~100 cm적부면중，Cd、Cr、Cu、Zn、Pb화As 6충중금속적함량비대조분별증가료12.5%、6.7%、1.4%、1.5%、17.3%화1.3%。차외，수착충식년한적증가，표층토양중적Zn、Cr、Cd、Cu화Pb적함량야현저증가，기적루속솔분별위4.584、0.9338、0.0133、1.243 mg·kg-1·a-1화0.6417 mg·kg-1·a-1。6충중금속함량여토양중적유궤질、전담함량도정현저적정상관관계，Zn、Cr、Cd、Cu화Pb함량여전린함량야표현출현저적정상관관계；인차유궤비、화비적시용가능시설시채지토양중중금속함량승고적중요원인。
The vertical distribution of cadmium(Cd), chromium(Cr), copper(Cu), zinc(Zn), arsenic(As)and lead(Pb)in the soils of the facility vegetable fields from Beijing suburbs were studied. With increasing depth in the soil profile(0~100 cm), the concentrations of heavy metals decreased, except As. By comparison with those of the control(open vegetable fields), the concentrations of Cd, Cr, Cu, Zn and Pb in the soil profile(0~20 cm)of the facility vegetable fields increased 21.8%, 11.3%, 29.4%, 27.6%and 5.8%, respectively, but Cd, Cr, Cu, Zn, Pb and As concentrations in the soil profile(80~100 cm)increased by 12.5%、6.7%、1.4%、1.5%、17.3%and 1.3%, respectively. Besides, the contents of Zn, Cr, Cd, Cu and Pb in the soil profile(0~20 cm)of facility vegetable fields, had significant positive correlations with planting years, with the accumulation rates of Cd, Cr, Zn, Cu and Pb being 4.584, 0.933 8, 0.013 3, 1.243, 0.641 7 mg·kg-1·a-1, respectively. Meanwhile, the test six heavy metals contents were significantly positively correlated with the contents of soil organic matter and total nitro-gen, and the Zn, Cr, Cd, Cu and Pb contents were significantly correlated with the content of soil total phosphorus, applying organic fertilizer and chemical fertilizer could induce the heavy metals accumulation in the soils of facility vegetable fields to some extent.