Ecoeconomical Analysis on Some Typical Models of Dike- Pond System in the Pearl River Delta

On the basis of historic information collected on the dike pond system and field investigation data, the dike pond system of typical region in the Pearl River Delta was studied. Its present main types were summarized, of which the ecoeconomical effects of six typical models were analyzed in detail. The results showed that different models had different features, and the favourable cycle of dike pond system was determined by various economical factors. Owing to the predominant ecoeconomical rationality of the integrative fish farming model and local material utilization models,they are worth widespread popularization.