Abstract:

The ecological,social,economic and comprehensive benefits of different regeneration methods of trunk shelterbelts in Casuarina equisetifolia in coastal sandy soil were analysed by AHP. The results showed that the methods of regeneration by strip-felling were significantly superior to the methods of regeneration by interplanting.In the methods of regeneration by strip-felling,the ecological, social and comprehensive benefits of cutting width in 10 m were higher than any others. The cutting width in 20 m was next while the economical benefits of cutting width in 30*!m was the highest. In the methods of regeneration by interplanting, the ecological, social, economic and comprehensive benefits of which under forest after pregeneration were superior to direct one. As to the trunk shelterbelts of Casuarina equisetifolia which were only regenerated by interplanting, their comprehensive benefits could be improved obviously through pregeneration based on their canopy density and selecting the shade tolerance tree species to interplant.

Key words: AHP, Casuarina equisetifolia, Trunk shelterbelt, Regeneration methods, Comprehensive benefits