Abstract
Coastal soil salinization is an environmental geological problem having obvious impacts on building, environment and agriculture. Evaluating the soil salinization is an urgent issue for the land environment situated with the fast development of civil engineering in southern Laizhou Bay. This paper examines the retrogression of soil quality with samples in 2015. Total salinity and the ions K^+, Ca^2+, Na^+, Mg^2+, SO_4^2-, Cl^-, CO_3^-, HCO_3^- and pH were detected. The salts in the soils studied are KCl, NaCl, MgCl_2, CaSO_4, K_2SO_4 and N_a2SO_4. The spatial analysis of chemical parameters of soils indicates that soil salinity is affected mostly by seawater intrusion and groundwater exploitation. Classification of soils is evaluated by using chemical content and mean salinity with a criterion given by NEA and MOHURD.
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