文献类型：会议论文

英文题名：Spatial distribution of heavy metal in urban soil of China

作者：Li, Xiu Xia[1]

第一作者：Li, Xiu Xia

通讯作者：Li, X. X.

机构：[1] School of Art and Design, Xinxiang University, Henan, 453000, China

第一机构：新乡学院艺术学院

通讯机构：[1]School of Art and Design, Xinxiang University, Henan, 453000, China|[110716]新乡学院艺术学院;[11071]新乡学院;

会议论文集：Materials Science, Computer and Information Technology

会议日期：June 14, 2014 - June 15, 2014

会议地点：Tianjin, China

语种：英文

外文关键词：Ecology - Heavy metals - Lead - Pollution - Urban growth

摘要：There are significant regional differences of the heavy metals contents in urban soils in China. The heavy metals contents in urban soils of the eastern, central and western regions are quite different, and the pollution of capital cities and prefecture -level cities are different. The study about spatial variability, time differences, pollution levels and environmental risks of heavy metals from China's urban soil show that the heavy metal contents in Chinese cities are over the soil background value in China, especially the contents of Cd and Pb, which were 91.37 times and 41.91 times to the Chinese soil background value. And the content of Ni l is only 1.59 times to the Chinese soil background value.There are also obvious differences among different functional areas the city. Meanwhile, the metal content of urban soils change with the length of time of urban development. Nemero comprehensive pollution index of China's urban soil heavy metal was 45.404, which is heavily polluted. The potential ecological risk index of China's urban soil heavy metal is 71.56, which is high potential ecological risk. Different levels of urban pollution with development degrees cause the different environmental risks. ? (2014) Trans Tech Publications, Switzerland.