一、基本概念及意义 我国沿海港口承担着南北物资交流和对外贸易运输的双重任务,随着国民经济和对外贸易的高速增长,沿海港口吞吐量实现了持续高速增长,并呈现出良好的发展势头,始终保持着对沿海港口基础设施建设和能力供应的较高压力,使沿海港口目前 I. Basic Concepts and Significance China’s coastal ports have the dual task of material exchange and foreign trade transport between the north and the south. With the rapid growth of the national economy and foreign trade, the throughput of coastal ports has achieved sustained and rapid growth and has shown a good momentum of development , Has always maintained a high pressure on the coastal port infrastructure and capacity supply, so that coastal ports are currently