Figure 6
From: Soil heavy metal contamination assessment in the Hun-Taizi River watershed, China

Canonical correspondence analysis between eight heavy metal concentrations and effect factors. Abbreviations: D2STP – Distance to sewage treatment plants, D2Re – Distance to reservoirs, D2City – Distance to cities, D2Mi – Distance to mines, D2MPF – Distance to main pollution factories, D2Vi – Distance to villages, D2Ro – Distance to roads, D2Ri – Distance to rivers.