港口供应链物流能力最优关系契约模型

港口供应链需要大量专用性物流能力，但又普遍存在着专用性物流能力投资不足的问题。通过港口供应链模型，分析了非合作与集中决策条件下能力投资，设计了最优关系契约，有效解决了港口供应链中专用性物流能力投资不足的问题。

The optimal relational contract model of port supply chain logistic ability

The port supply chain needs a lot of specific logistic capabilities,but it is commonly found that the specific logistic capabilities in the port supply chain are inadequately invested.Through the port supply chain model,the paper analyzes the capacity investment under the condition of non-cooperation and centralized decision making and designs the optimal relational contract,which can effectively solve the underinvestment problem of specific logistic capabilities in port supply chain.