为了对陕西省渭南市富平县城镇土壤质量评价和治理提供理论和技术支持,通过单因子污染指数评价方法和统计学知识对富平县土壤重金属的分布及土壤生态危害污染进行了研究与评价.结果表明,富平县土壤重金属Ti、Fe、Mn、Zn、Sr、Zr、Rb平均含量分别为3551.86mg/kg、24793.08mg/kg、453.78mg/kg、45.81mg/kg、180.75mg/kg、160.20mg/kg和82.36mg/kg,除Fe和Ti元素外,其余元素的平均含量均低于全国土壤元素背景值.与整个陕西地区相比,Ti、Fe、Sr平均含量均高于全省土壤重金属含量基线,Mn、Zn、Zr、Rb均低于全省基线.工矿地区土壤中Ti、Fe、Mn、Zn、Rb含量明显高于其他地区,Mn、Zn、Sr、Zr、Rb等重金属元素含量对富平县地区的水果及各种农作物的生长和质量影响较大,特别是土壤中Ti、Fe元素远远超过全国土壤元素背景值,处于强生态危害水平.%The distribution of heavy metals and the ecological hazard were studied and appraised by using single factor pollution index evaluation method and statistics to provide theoretical and technical support for soil quality evaluation and management in Fuping County of Weinan City in Shaanxi Province. The results showed that the average contents of Ti, Fe, Mn, Zn, Sr, Zr and Rb in Fuping was respectively 3551. 8 mg/kg, 24793. 0 mg/kg,453. 78 mg/kg,45. 81 mg/kg, 180. 75 mg/kg, 160. 20 mg/kg and 82. 36 mg/kg. They were lower than the national soil elements background value except Fe and Ti, but higher than the basic line of heavy metal content except Ti, Fe and Sr for the whole Shaanxi. In industrial and mining areas, the amount of Ti, Fe, Mn, Zn and Pb was obviously above other areas, and the metals such as Mn, Zn, Sr, Zr and Rb had great effect on the growth and outcome of fruits and crops in Fuping, especially the amount of Ti and Fe in soil far exceed the national soil elements background value, made it in heavy ecological hazard level.
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