Macro-and microelements abundance in some urban soils from Romania

来源 :第四届城市、工业、交通和矿山土壤国际会议(The 4th International Conference on Sol | 被引量 : 0次 | 上传用户:xufei037
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  The paper present datas concerning the macro-(N,P,K,Ca,Mg,S) and microelements (Fe,Mn,Cu,Zn,Cd,Cr,Co,Ni,Pb) in some urban soils from three large Romanian cities:Bucharest,Ploiesti,Iasi and Baia-Mare.The samples were collected from different locations as:park areas,along the streets areas,and gardens for vegetables and fruits.The chemical elements contents varied in a large range,from a low up to excessive pollution level.Generally,the distribution of chemical elements is lognormal with right symmetry.The majority of investigated urban soils are soils with carbonates,sometimes with soluble salts and alkaline reaction.Also,are rich in phosphorus and calcium.The soils located along the streets areas with intense cars traffic and/or in influence zones of some industrial objective with chemical or non-ferrous processing activities recorded heavy metals loading.In these soils the heavy metals concentration outrun by 3-4 times the maximum allowable limits.In urban soils located in Baia-Mare area,70-80% from the total heavy metals content (Cd,Cu,Pb,and Zn) is mobile forms that could be absorbed by plants.Correlative relationships between chemical elements abundance indicators and some physical and chemical properties of investigated urban soils were established.
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