[Evaluation on comprehensive benefits of different regulation models of agroforestry ecosystem in snail river beach]

The economic, ecological, social and comprehensive benefits of different regulation models of agroforestry ecosystem in Nangeng river beach were evaluated by AHP. The results showed that agroforestry ecosystem was significantly superior to reed(Phragmites communis) system. Different regulation models of agroforestry ecosystem had different benefits. The sheet-thinning model had the highest economic, social, and comprehensive benefits, and it was the optimal regulation model. For all thinning models, the key approach to further raise benefits was to choose some intercrop variations, which had a high economic value, especially a high ratio of output to input. For no-thinning model, keeping on intercropping was the effective measure to raise the social and comprehensive benefits.