Abstract
Rapid urbanization development has caused high accumulation of heavy metals (Cd, Hg, Cu, Pb, and Zn) in urban lake surface sediments from city parks in Shanghai. Compared to their soil background values, the maximum levels of five metals in lake sediments were higher 3.8~5.8times. The pollution hotspots existed in the urban areas with larger population density and traffic volume, old industrial areas in the west side of Huangpu River, and emerging industrial areas in the suburb. Land use regression (LUR) models were successfully developed to evaluate spatial variations of heavy metal accumulations in urban lake sediments based on four predictor variables such as land use types, traffic variables, population density, and industrial sources. LUR models deduced that the major control factors for Cd and Pb levels in lake sediments were roadway density and commercial land area, respectively, commercial land area and number of industrial point sources for Hg and Cu, residential land area and number of industrial point sources for Zn.
| Translated title of the contribution | Spatial distribution of heavy metals in lake surface sediments in Shanghai |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 3941-3948 |
| Number of pages | 8 |
| Journal | Zhongguo Huanjing Kexue/China Environmental Science |
| Volume | 38 |
| Issue number | 10 |
| State | Published - 20 Oct 2018 |
