珊瑚礁型海洋牧场建设的效果评估——以分界洲岛为例OA

To address the absence of a systematic assessment method for the reef-based marine ranches,this study uses the reef-based marine ranching project on Fenjiezhou Island as a case study.Coral reef restoration was performed through cultivation technology in reef coral nurseries and bottom-sowing transplantation.An evaluation system was developed based on baseline survey and follow-up monitoring data to assess the effec-tiveness of this marine ranching model centered on coral reef restoration.The one-year evaluation results post-construction revealed that the survival rate of transplanted reef corals was 90.3%,while the coverage rate was 15.0%.The average growth rate of transplanted reef corals was 0.089 m/a,and the replenishment of reef corals increased by 6.0 ind./m2.The completion ratio of the restoration area reached 100.0%.Addi-tionally,fish density increased by 90.0 ind./100.0 m2,and the preservation rate of artificial reefs was 100.0%.The density of macrobenthos(excluding coral pest organisms)increased by 2.0 ind./m2.The total score of the eight indicators was 97 points,categorizing the evaluation level as excellent.Overall,the reef-based marine ranch construction on Fenjiezhou Island is highly effective,with various indicators demonstra-ting strong performance.This provides a successful example and a scientific foundation for coral reef restora-tion and marine ranch construction,which is crucial for building China into a strong maritime country and promoting ecological progress.