Abstract: The main configuration modes of the coastal protective forest of Casuarina equisetifolia in Dongshan, Fujian were selected. An index system was established, containing 8 indexes of 3 categories such as ecological benefits, social benefits and economic benefits. And their effects were analyzed by using the Analytical Hierarchy Process (AHP). Results showed: of all the three factors in the strategy layer, the ecological benefits still rank the first and socio-economic factors also take high weight. As for the total benefits, the order is listed as follows: Mixed Forest of Casuarina equisetifolia and Acacias> Agroforestry of fruit trees and Casuarina equisetifolia> Mixed Forest of Casuarina equisetifolia and several other tree species >Mixed Forest of Casuarina equisetifolia and eucalyptuses> Mixed Forest of Casuarina equisetifolia and other introduced trees > Mixed Forest of Casuarina equisetifolia and shrub>Mixed Forest of Casuarina equisetifolia and pines. The optimal allocation of the different types, from the shoreline to landward, was also analyzed. That might be much meaningful to the construction of the coastal protective forest.

Key words: coastal protection forest, Casuarina equisetifolia, AHP