RESUMO
In order to assess the sustainable use level of fisheries resources, Zhoushan Fishing Ground was selected as a demonstration. Based on 24 indicators related to the resource-environment subsystem and economic subsystem, principal component analysis was employed to analyze the indicator system in each subsystem, and grey relative relationship analysis was computed as a indicator to evaluate the sustainable use level of fisheries resources. The results indicated that the sustainable use of fisheries resources was at a lower level before 1962, and gradually rose to the top in 1974. It has sharply declined since 1978, and dropped to almost the lowest level in 1983, being 51.72% of 1974.
Assuntos
Conservação dos Recursos Naturais , Pesqueiros , AnimaisRESUMO
Based on principal component analysis, the present utilization situation of main fishery resources in Zhoushan fishing ground were studied. The results showed that the nine main fishery resources in Zhoushan Fishing Ground could be divided into four categories, i.e., Pseudosciaena crocea and Sepiella maindroni rochebrune were at the degenerating stage; Trichiurus haumela, Pneumatophorus japonicus and Decapterus maruadsi at the fully-utilized stage; Muraenesox cinereus, Pseudosciaena polyactis and Pampus at the partly-used stage and shrimps and crabs were at the initially-used stage. Therefore, it will be of key importance for the sustainability of fishery resources to utilize the current fishery resources at a reasonable way.
