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正确评价河口及邻近海域鱼类优先保护次序,对河口生态管理以及维持生物多样性具有重要意义,而鱼类优先保护次序评价指标体系和评价方法研究是珍稀鱼类保护的基础。在实地调查和资料收集的基础上,借助专家咨询和相关研究成果提出了由物种濒危系统、遗传价值系统和物种价值系统3个子系统及其指标集组成的鱼类优先保护评价指标体系,确定了评价等级和标准。为克服权重确定的主观随意性,基于信息熵原理确定各指标的客观权重,在此基础上,引入理想点法进行鱼类优先保护多目标决策评价,进而建立了鱼类优先保护次序的评价模型,最后以建立的模型对漳卫新河口及邻近海域鱼类优先保护次序进行评价。结果表明,计算方法简便,评价结果合理,在河口生态管理中具有一定的应用价值。
Correctly evaluating the order of priority conservation of fish in the estuarine and adjacent waters is of great significance to the estuary ecological management and the maintenance of biodiversity. However, the evaluation index system and assessment methods for the priority order of fish conservation are the basis for the conservation of rare fish. On the basis of field survey and data collection, with the aid of expert consultation and relevant research results, the evaluation index system of fish priority protection consisting of 3 subsystems of species endangered system, genetic value system and species value system and its indicator set is proposed. Evaluation level and standard. In order to overcome the subjectivity and arbitrariness of weight determination, the objective weight of each index was determined based on the principle of entropy. Based on this, the ideal point method was introduced to evaluate the multi-objective decision of fish priority protection, and then the evaluation model of fish priority protection order Finally, the order of prioritizing protection of fish in Zhangweixin Estuary and its adjacent waters was evaluated with the established model. The results show that the calculation method is simple, the evaluation result is reasonable and it has certain application value in the estuary ecological management.