Ecogeochemical features in Guangzhou,Wuhan and Chengdu, China

ComparatiVe study was performed on the data obtained by multi-objective regional geochemical survey carried out for the first time in the Zhujiang River delta, Jianghan plain and Chengdu plain. The results show that there are both general characters and differences in distribution of geochemical elements in soils in different areas. The general characters are manifested by the inheritance, overlapping and penetration of geochemical elements at the vertical section of soils, while the differences are marked by the marked difference in soil geochemical features in difference sediment sources and different sedimentary environments.