Nitraria sibirica is one kind of wild scrub with stronger resistance to sali nity, so it can grow on heavy saline-alkali soils. The research on N. sibirica afforestation and its effect on soil amelioration in Yellow River Delta regio n were conducted. The result showed that the plant coverage significantly increa sed, and the desalting effect of Nitraria sibirica on soil was very evident after afforestation of N. sibirica on heavy saline-alkali soils. Salt concen tration in the soil layer of 20 cm in depth ...