Abstract:In this paper, basic achievements gained in agro—ecological geochemical survey and evaluation in eastern Shandong province and some geochemical problems have been introduced. As showed by survey and evaluation results, under the influence of hypergenesis and human activities, the contents of Zn, Pb, Cu, Se, Cd, S, P, Hg, N, OrgC, etc. are obviously larger than its in deep part. In the whole, the geochemical environment quality is good in this area, the Ⅲ type and bad than Ⅲ type soils only account for 0.13%. These areas mainly located around mining areas and cities. Cr, Ni, Cu and Cd are the key elements which have been polluted. Most elements or index of shallow ground water are under the natural background concentration, the concentration of Cd, Fe, NO—2 and the total hardness in parts of shallow groundwater samples are over the drinking water standards. This kind of shallow groundwater is not suitable for drinking. The existent ecological geochemical problems in this area are mainly: ① The pH values of soil are low in the hilly, and the surface soil have the trends developing into the strong acid and strong alkali, which will increase heavy metal element activation; ② the soils of coastal area are barren, the nutrition level of N，P and Organic matters are usually in the lack level; ③ the heavy metal pollution, such as Hg, Cd, Pb, Zn, Se, S, etc., are serious in surface soil of Laizhou[CD*2]Yantai and Muping—Rushan mining areas and densely populated townships. High geological background, the acidic surface environment and the industrial pollution are main reasons caused higher levels of heavy metals in environment.
