Abstract:

It is of practical significance to understand the soil salinity balance situation for the early warning of salinization and the guidance of agro-ecological environment regulation. Based on the four aspects of groundwater, climate, soil physical and chemical properties, an evaluating index system of the situation and application in semi-dry and semi-humid area has been set up and applied in low plain areas of Bohai Sea, as a typical zone( combined with a comprehensive index method). The results show that the area of “good” class accounted for 0.8% of the total, and the area of “fair”, “poor” and “bad” classes accounted 26.8%, 59.0% and 13.5% respectively, so it is hard to maintain the balance of soil salinity in this area. The evaluation result is coincident with the actual situation which show that the method is applicable in the low plain area of Bohai Sea.

Key words: groundwater, soil physical and chemical properties, salt balance, evaluation system, low plain around the Bohai Sea