浙江大陆淤涨型海岸线的变迁遥感调查

浙江沿海由于滩涂淤涨与围海造地等因素引起海岸线的剧烈变迁,研究海岸线的变迁规律,对浙江生态环境安全、经济持续发展有深远意义。本文利用遥感方法对浙江省海岸线的变迁幅度与速度进行了调查研究,与传统方法相比,具有宏观、快速、实时、直观、动态性和空间定位准等特点,克服了传统海岸线变迁调查方法费时、费力的缺点。通过对各岸段在不同时期海岸线变迁的幅度与速度进行了数量化的分析与比较发现,一千多年里,浙江整个海岸线变迁幅度与速度都呈现由南至北逐渐变小的趋势,海岸线变迁速度近代大于古代,在1960-1990年期间,海岸线变迁速度最快,近十年有速度变慢的倾向。

Continental Coastline Change Research by Remote Sensing in Zhejiang Province

coastline changes were resulted from some factors such as silt,dam etc..research of coastline change was significative for safe of ecology environment and economic sustained development.Two ways were used to monitor the change of coastline in Zhejiang province by remote sensing.One was that the coastline in 1993 and 2001 was gained from different date of images,then,the change extent and speed were measured and analyze by overlay of two date coastline map;The other method was compositive visional interpretation by mixed information such as image characters,history recordation etc.the coastline maps were gained at strong change position.The change extent and speed of different time were analyze and compared.