摘要
本文研究了沈阳东郊沈阳—抚顺公路两侧农田表层土壤铅含量状况,结果表明(1)该区域内表层土壤的铅含量为50.01～9.69mg/kg,平均为30.47mg/kg,明显高于这一地区土壤的铅元素背景值,说明土壤正受到铅污染,污染源主要为汽车尾气;(2)土壤总铅含量主要受土壤有机质含量、质地及阳离子代换量的影响,而有效铅含量则主要决定于土壤总铅和有机质含量及土壤的pH条件;(3)土壤铅含量的空间分布有离城市愈近愈高的倾向,其原因除污染源差异外,土壤质地、有机质含量的变化是重要的。
The study was carried out to investigate the Pb contents in the surface soil and its distribution along bothsides of Shenfu highway in the eastern suburb of Shenyang. The results obtained showed that (1) The total Pb contents of the soil in this region ranged from 9.69 to 56.01 mg/kg, and the mean value was 30.47mg/ kg, which was obviously higher than its back-groung value. Therefore, it could be suggested that these soils have been polluted seriously. The chief pollution source was the tail gas of the carsi (2) The contents of total Pb mainly were affected by the organic matter content, texture and CEC of the soils, while the available Pb contents were affected by the total Pb content, organic matter content and pH of the soilsi (3) The nearer the soil to the urban district was, the higher the Pb cnntent was.
出处
《农业环境保护》
CSCD
1990年第2期10-13,共4页
Agro-Environmental Protection
