Study on soil geochemical reference value in Leizhou Peninsula

Based on the geochemical survey data of basic farmland’s soil quality in the lower reaches of the Pearl River, the contents of 54 elements/indexes in 872 deep soil samples from Leizhou Peninsula were analyzed. Compared with crustal abundance, element content in layer C of the soil in China and element content in layer C of the soil in Guangdong Province (only 12 indexes), the characteristics of soil geochemical reference values of different soil parent materials were discussed. The concentrations of elements in deep soil in Leizhou Peninsula vary greatly with not high element geochemical reference values as a whole, and the soil geochemical reference values of different parent material types have obvious differences. The deep soil elements inherit the geochemical characteristics of the soil parent material and reflect the diversity of regional geological background and soil parent material types. The deep soil with volcanic rock weathering as the soil parent material is enriches with iron group elements and dispersed elements, while the granite-weathering soil is enriches with rock forming elements, tungsten molybdenum group elements, radioactive elements and rare earth elements.