Agro-Ecological Geochemical Survey and Evaluation of Eastern Shandong Province

The main results of agro-ecological geochemical survey and evaluation of Eastern Shandong Province are presented. The results indicate that contents of Zn, Pb, Cu, Se, Cd, S, P, Hg, N, Org C, etc. are strongly present in topsoil instead of deep stratum, probably due to the effect of hypergenesis and human activities. In summary, the geochemical environment quality is good on the basis that only 0.13% of the total are Ⅲ type and worse than Ⅲ type soils, in which are adjacent to mining areas and cities. However, Cd, Cr, Ni, and Hg were worse than the quality standards. Most elements or indices of shallow ground water were within the natural background concentrations. The total hardness, total dissolved solids, NO₂^- and F^- in parts of shallow groundwater samples were above the permitted levels for drinking water standards, which were not suitable for drinking. The existent ecological geochemical problems in this area were mainly: low pH values of soil in hilly lands, barren soils of coastal areas, and serious heavy metals pollution in topsoil in some areas. The main reasons for enrichment of heavy metals in parts of the study area were human activities, such as mining, urbanization, industrialization, and geological background weathering.