A study on environmental geochemistry spatial characteristic of black soil of Heilongjiang province of China based on GIS

The black soil region is important food base of China, It plays a great role in food safety and national economy. But there are few studies of regional geochemistry spatial characteristic of black soil. In this article we study the geochemistry spatial characteristic of black soil region of Heilongjiang province based on GIS. It shows that most trace elements is proper high in black soil region. But some heavy elements such as Pb show regional pollution. On the other hand some compulsory elements of plant such Zn, Mo show insufficiency which should be pay more attention to.