Abstract: The study of tree species selection, soil amelioration and afforestation in ecological engineering of shelter forest construcation on mud seashore of north China shows that Fraxinus velutina, Populus 'popularis', Robinia pseudoacacia and Salix 109 can be planted on light saline-alkali soil, Elaeagnus angustifolia, P.'popularis', R. pseudoacacia,F. velulina and salt-enduring strain of P.'Liaohe' on medium saline-alkali soil after burying sand,E. angustifolia and salt-enduring strain of P. 'Liaohe' on soda-salinized soil after burying fragments of rice stalk, and Tamarix chinensis and E. angustifolia on heavy saline soil after soil amelioration and soil engineering.

Key words: Shelter forest, Soil salinization, Afforestation, Mud seashore, Cunninghamia lanceolata., biomass, carbon storage, stand age