GEOGRAPHICAL DIFFERENTIATION OF HEAVYMEDAL STATE IN SOILS (Cd,Pb AND Cu)
土壤重金属（镉,铅,铜）化学形态的地理分异研究

According to the study on nine types of soils, including brown soils, for subtypes of cinnamon soils and other non zonal soils, this paper discusses the existence state and the differentiation characters of heavy medal Cd, Pb and Cu. It also discusses the relationship between soil properties, such as pH and organic matter, and regional differentiation of heavy medal state. Therefore, this paper shows the law of regional differentiation of heavy medals in the soils in the south and north direction and east and west direction.