国土资源遥感2013，Vol.25Issue(3)：130-137,8.DOI:10.6046/gtzyyg.2013.03.22
珠江三角洲海岸线遥感调查和近期演变分析
Remote sensing investigation and recent evolution analysis of Pearl River delta coastline
摘要
Abstract
In order to further investigate and analyze the recent dynamic evolution of Pearl River delta coastline,the authors used multi-satellite and multi-temporal remote sensing images,such as TM,ETM and ALOS,as the data source to extract the coastline.After geometric correction and image registration,all images had the same coordinate system.According to the different features and interpretational keys of the coastlines,the authors conducted naked eye interpretation and computer automatic extraction to extract all kinds of coastlines in 1998,2003 and 2008,with the coastline extraction accuracy higher than 80％.With the help of the overlap and statistical tools in GIS,the authors also analyzed the recent evolution characteristics,trends and causes of Pearl River delta coastlines.The results show that the total length of Pearl River delta coastline changed insignificantly from 1998 to 2003,but increased remarkably from 2003 to 2008,mainly because of the artificial coastline increase.The artificial coastline possesses the highest proportion (more than 50％),followed by rocky coastline,estuary coastline,sandy and gravel coastline,and mangrove coastline has the lowest proportion.Pearl River delta coastline mainly extends to the sea,and the main factors seem to be coastal engineering construction,beach reclamation,land reclamation and artificial breeding,with artificial reclamation being the main driving factor of the coastline changes.关键词
珠江三角洲/遥感调查/海岸线/演变分析Key words
Pearl River Delta/ remote sensing survey/ coastline/ evolution analysis分类
信息技术与安全科学引用本文复制引用
朱俊凤,王耿明,张金兰,黄铁兰..珠江三角洲海岸线遥感调查和近期演变分析[J].国土资源遥感,2013,25(3):130-137,8.基金项目
中国地质调查局"珠江三角洲经济区城市群环境地质调查与区划"项目(编号:1212010914045)资助. （编号:1212010914045）
