Effects of rhus typhina and robinia pseudoacacia on physicochemical properties of saline soil in Dagang Area, Tianjin

Abstract

In order to explore the effect of using two different afforestation tree species to improve soil in coastal saline-alkali land, the method of combining field sampling and indoor analysis and test was adopted. The physical and chemical properties of soils planted with Rhus typhina and Robinia pseudoacacia forest were determined. The results showed that afforestation could improve soil structure, decrease soil bulk density and increase soil fertility. To reduce soil salinization, the soil physical and chemical indexes of Robinia pseudoacacia plantation were better than those of growing Rhus typhina forest, so the planting area of Robinia pseudoacacia plantation in Dagang area could be increased. Planting Rhus typhina forest could also improve the soil in this area, but its effect was lower than planting Robinia pseudoacacia plantation.