Variations of Alkalization Parameters of Soda Solonetz During Dry and Wet Season
苏打碱化土壤碱化参数的干湿季节动态变化

A typical soda solonetz area in the west of Jilin Province was selected as the test region. Primary parameters of soda solonetz, including pH, sodium adsorption ratio (SAR), exchangeable sodium percentage (ESP), total alkalinity, etc., were determined to study the characteristics of temporal variability during dry and wet seasons. Soils were sampled in June (dry season), August (wet season) and October (dry season) in 2005. The depth of soil profile was 180 cm with a sampling interval was 20 cm. The results showed that primary parameters of soda solonetz in the profiles increased from June to August and decreased from August to October, especially in the topsoils (0 ~ 20 cm), which were attributed to the combined actions of the strong evaporation in arid climate, the shallow water table and the weak soil permeability.