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在渤海湾西岸选取8个不同地貌单元、不同土地利用方式的土壤剖面,分别在土壤返盐和淋溶最强的季节,按0～20、20～40、40～60和60～90 cm采集土壤盐渍化样品,分析土壤剖面盐渍化特征。古河道带地势较高,为轻度盐化土壤,以硫酸盐型和氯化物硫酸盐型盐渍化类型为主。河间洼地多为中度盐化土壤,为硫酸盐氯化物型盐渍化类型。潮上带土壤的盐分含量达7～11 g/kg,为盐土,为氯化物型盐渍化类型。土壤的蒸发、淋溶作用跟地貌、沉积等密切相关。同一地貌类型上,距海较远土壤剖面HCO3-含量高,Cl-含量低,全盐含量低,盐化程度低。
Eight different geomorphological units were selected in the west coast of the Bohai Bay. The soil profiles of different land-use types were collected at 0-20, 20-40, 40-60 and 60-90 cm in the soil returning salt and the strongest leaching season respectively Soil salinization samples, analysis of soil profile salinization characteristics. The ancient river courses with high-lying, slightly salinized soil, with sulfate and chloride sulfate salinization type based. Heavily depressions are mostly moderately salinized soils, which are sulphate chloride salinization types. Salt content of soil in tidal zone reaches 7-11 g / kg, which is saline soil, which is chloride type salinization type. Soil evaporation, leaching with the topography, sediment and other closely related. On the same landform type, HCO3-, Cl- content, low total salt content and salinization degree are higher in soil profile far away from the sea.