Abstract:

This paper evaluates the elements of Hebei plain topsoil by referring to the three aspects of soil quality. Study shows that elements reflecting soil fertility quality are in a rich or fitting state, but the other ones including TOC, N, P, alkalihydrolyzable N, Zn, Mo, effective Mo, effective B are insufficient, especially TOC, Mo, effective Mo are deeply lacking. According to Soil Environmental Quality Standard (GB-15618-95), it suggests that the environment of Hebei plain heavy metal elements are favorable, and the exceedingstandard rate of these elements is very low. And the analysis of these heavy metal elements form shows that the bioavailability and potential harmfulness of Cd is much large and it is the most ecologically harmful element in the area. Among the elements which reflect the quality of soil health, F is rich or fitting while I is in relatively lacking state.

Key words: :Hebei plain, soil, heavy metal element, evaluation