Spatial distribution and variability of Cd, Pb, Zn in Soils in Shenyang Zhangshi Irrigation Area (SZIA), China

摘要：

Spatial distribution and variation of Cd, Pb and Zn contamination in soil were studied by geostatistical techniques (Kriging) in Shenyang Zhangshi Irrigation Area (SZIA), China. The results indicated that long time of sewage irrigation had caused serious Cd, Pb, Zn contamination in soil. The mean and the maximum of Cd were markedly higher than the LSGSS in China (GB15618-1995). The means of Pb, Zn were much higher than the upper threshold of the background, and the maximums were also much higher than the LSGSS. From 1990 to 2004, the mean and the maximum of Cd increased, and the soil dimension with Cd more than 1.5mg·kg<1> increased too, which may be related to Cd reactivation of the sediments in Xi River. The mean and the maximum of Pb, Zn decreased, and the soil dimension with Pb, Zn more than the LSGSS in China reduced for topsoils. Contrarily, for subsoils the mean and the maximum of Pb, Zn increased, and the soil dimension with Pb, Zn more than the upper threshold of background increased, which may be related to the eluviation of Pb, Zn in topsoils with rainfall and irrigation water.

关键词： Spatial distribution and variability soil contamination heavy metals irrigation area

作者: Lina Sun Yaohua Zhang Richard Collins Tiehang Sun Jing Guan T. David Waite Xinxin Li

作者单位: Shenyang University, Shenyang 110044, China Liaoning Research Institute of Geology and Mineral Resources, Shenyang 110032, China Centre for Water and Waste Technology, University of New South Wales, Sydney 2052, Australia

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 122-123

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）