Identification and Characteristics of the Typical Coastline Indicators:A Case Study of the Central Jiangsu Coast
Li Fei;Cao Ke;Zhao Jianhua;Song Derui;National Marine Environmental Monitoring Center, Key Laboratory of Sea-field Management Techniques,State Oceanic Administration;
As the relying carrier of sea development activities, the scientific management of the sea coastline is of great importance for the rational allocation of marine resources, guidance of sea industrial layout, and promotion of the coastal ecological civilization construction. From the view of monitoring and integrated management of the shoreline space resource, this article discussed the shoreline types and characteristics of typical shoreline indicators such as the high tide line, wet land line, seawall line, embankment line, vegetation lines,waterlines, etc. Taking the central coast in Jiangsu Province as research area, this study used remote sensing technology to extract the typical shoreline indicators based on two images-ETM/Landsat-7 and OLI/Landsat-8 in 2014, and analyzed the spatial distribution of the coastline indicators and coastal evolution characteristics using the baseline and statistical methods. The spatial characteristics of the coastline index are closely related to the coastal topography, land-sea interaction, coastal development and protection activities. The statistical analysis of the spatial attributes of the coastline indicators in the study area indicated that the unused tidal zone was only distributed in the two protected areas, and other coastal tidal zone had been fully developed, among which the red-crowned crane protected areas larger. The intertidal salt marshes were distributed in every shore, and the two protection areas were more prominent, and the salt marsh of other shore section is not more than 600 m.The intertidal zone kept the overall scouring and silting situation of the study area, and it increased from north to south in depth, with the deepest distance in the north side of Liangduo estuary. The natural types of coasts in our country are complex and diversified, and human development activities are also constantly changing the coast shape. The characteristics of coastlines at different times are different due to the combined effects of man and nature factors, so it is difficult to fully reflect the characteristics of the coastline based only on the average tide high tide line. As an important space for the coastal development activities, the scientific management of the coastline is important for the rational allocation of marine resources, the layout guidance of marine industries, and the promotion of coastal ecological civilization. Different types of shoreline indicators have their own particularity. It is important to comprehensively analyze the types and characteristics of typical coastline indicators based on the monitoring and comprehensive management of coastline resources. This is important to comprehensively understand the development and evolution of coastline and grasp the characteristics and development status of coastline spatial resources, and thus conducive to promoting the scientific management of the coastline protection and utilization. The research results can provide a reference for the integrated management research and practice of the shoreline space resources.
【CateGory Index】： P748
【CateGory Index】： P748