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The evaluation index system of Marine Resources and Environment Carrying Capacity (MRECC) is incomplete and the relationships among indexes are generally neglected, resulting in the unreasonable evaluation results of existing studies. In order to solve this problem, a model named DPPD is established to evaluate the MRECC by innovatively integrating four methods, i.e., DPSIR (Driver-Pressure-State-Impact-Response), PCA (Principal Component Analysis), PA (Path Analysis), and DEMATEL (Decision Making Trial and Evaluation Laboratory). The DPSIR framework is not only employed to identify 26 indexes of MRECC on 5 factors but also provide a possible influence mechanism of factors. The PCA and PA methods are both used to test possible relationships between each pair of factors and determine the effective influence mechanism, based on which the DEMATEL is used to objectively determine the …