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利用统计分析和吸收系数描述了昆明西山菊科植物－土壤系统中Ｆｅ、Ｍｎ、Ｎｉ分布特征。结果表明，除凤毛菊外，菊科植物－土壤系统中植物对Ｎｉ元素均表现出相对的稀释和缓冲作用，有６种植物对Ｍｎ元素表现出相对富集作用，其余植物表现相对稀释缓冲作用。
Using statistical analysis and absorption coefficient, the distribution characteristics of Fe, Mn and Ni in the soil-plant system of Asteraceae in Kunming were described. The results showed that all the plants except Compositae and Pinus sylvestris had relative dilution and buffering effect on Ni. Six plants showed relative enrichment of Mn and the others showed relative dilution buffer effect.