【摘要】 通过对昆明西山菊科植物和天然草地土壤中铅、铬含量的测定,再经统计学分析,结果表明昆明西山受试植物对铅富集能力比对铬强,其中有5种植物对铅的相对吸收系数Ar>1表现对Pb的富集,余下9种则表现对Pb的稀释。受试菊科植物中除了风毛菊外,对铬的相对吸收系数均小于1,呈现出铬在土壤配分关系中的稀释作用。更多还原

【Abstract】 The contents of Pb and Cr in compositae and natrul grassland soils in Xishan hill in Kunming city were analyed,then statistically analyzed.Results showed that its abilities of enrichment of lead was stronger than chromium.The relative absorption coefficients of lead 5 species was Ar>1,for Pb enrichment.Another rest 9 species showed the dilution of Pb.Ecexept the compositae Saussurea,others relative absorption coefficients of chromium were less than 1 and showed the chromium dilution in distribution relations of the soil更多还原