1990-2017年杭州湾大陆岸线时空变迁分析  

The spatio-temporal change analysis of mainland coastline in Hangzhou Bay from 1990 to 2017

作　　者：王力彦[1] 邢喆[1] 侯辰[1] 章任群[1] 张苗苗[1] 杨慧贤 WANG Liyan;XING Zhe;HOU Chen;ZHANG Renqun;ZHANG Miaomiao;YANG Huixian(National Marine Data and Information Service,Tianjin 300171,China)

机构地区：[1]国家海洋信息中心,天津300171

出　　处：《海洋通报》2020年第4期481-487,共7页Marine Science Bulletin

基　　金：“全球变化与海气相互作用”专项(GASI-02-PAC-YGDL01)

摘　　要：以1990、2000、2005、2010、2014、2017年遥感影像为数据源,采用人机交互的方式提取杭州湾各时期大陆岸线。通过对岸线长度和类型、岸线变化速率,以及岸线变化区域类型的变化情况统计,综合分析杭州湾大陆岸线时空变迁规律。研究表明,20世纪90年代以来,杭州湾大陆岸线整体向海一侧推进,自然岸线保有率持续下降。围填海等工程建设是导致岸线变化的主要因素,加强对围填海工程的管控和海岸线保护与利用管理,可以进一步优化资源配置,促使科学合理的海岸带格局的形成。Using remote sensing images obtained in 1990,2000,2005,2010,2014 and 2017,mainland coastline inHangzhou Bay was extracted with man-computer interaction.By calculating the coastline length,type,changing rate and typeof changing areas,the spatio-temporal changing rule of the extracted mainland coastline was analyzed.Results showed that,the mainland coastline in Hangzhou Bay was pushed towards the sea and the natural coastline preservation rate kept decreasing since the 1990s.It demonstrated that reclamation engineering was the main factor of these changes.A more scientific andreasonable natural coastline patternwould be established by strengthening both the control of reclamation engineering and themanagement of coastline protection and utilization.

关 键 词：遥感影像 杭州湾 大陆岸线 时空变迁 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]