中文摘要：

对海岸线分类体系进行探讨,依据海岸线自然属性改变与否,将海岸线划分为自然海岸线和人工海岸线;依据海岸底质特征和空间形态,将海岸线划分为基岩海岸线、砂质海岸线、淤泥质海岸线、生物海岸线和河口海岸线;依据海岸线功能用途,将海岸线划分为渔业岸线、港口码头岸线、临海工业岸线、旅游娱乐岸线、城镇岸线、矿产能源岸线、保护岸线、特殊用途岸线和未利用岸线;依据海岸线时间尺度,将海岸线划分为历史海岸线、现状海岸线和未来海岸线;依据海岸线管理实践,将海岸线划分为管理岸线和实际岸线,并就海岸线分类的几点问题进行探讨。

英文摘要：

The coastline is interaction zone between land and sea. It is an important ecotone for global ecosystem conservation. The coastline classification is organization of varied coastline into classified types according difference rules. It is the foundation for coastline protection, use and marine resources integrated management,however, the coastline classification has stillnot been addressed systematically even nowadays. Aimed to clarify the coastline classification system, this article discuss the coastline classification system according to natural attribute and spatial pattern, exploitation, functional use, temporal scale, management requirement, ect of coastline. First, the coastline can be divided into natural coastline and man-made coastline. The natural coastline is result of natural interaction between sea and land, while the man made coastline is sea-land demarcation line which forms by cofferdam or dyke by human sea exploitation activities. Then the coastline is divided into rocky coastline, sandy coastline, silt coastline, biological coastline and estuary coastline according to geological characteristics in intertidal zone and coastline spatial pattern. The rocky coastline is comprised by rock in the intertidal zone and the contour of the coastline is very irregular. The sandy coastline is made up by sand and gravel in the intertidal zone and its contour is straight. The silt coastline is made up by silt in the intertidal zone and distributes near the estuaries. The biological coastline is formed by biological function, such as mangrove coastline and coral reef coastline. While the estuary coastline is surface demarcation between river and sea in estuary region. Third, the coastline can be divided into fish coastline, port coastline, industry coastline,tourism and leisure coastline, urban coastline, mineral and energy coastline, protection coastline, special purpose coastline and unused coastline. The fish coastline is used for fishing and fish resource conservation. The port coastline locates in the por