地球信息科学学报 ›› 2013, Vol. 15 ›› Issue (2): 262-269.doi: 10.3724/SP.J.1047.2013.00262

• 遥感科学与应用技术 • 上一篇    下一篇

面向对象方法和多源遥感数据的杭州湾海岸线提取分析

贾明明1,2, 刘殿伟1, 王宗明1, 汤旭光1,2, 董张玉1,2   

  1. 1. 中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室, 长春130102;
    2. 中国科学院大学, 北京100049
  • 收稿日期:2012-10-31 修回日期:2012-12-16 出版日期:2013-04-25 发布日期:2013-04-18
  • 通讯作者: 刘殿伟(1965-),男,吉林省吉林市人,研究员,从事资源环境遥感研究。E-mail:dianweiliu@gmail.com E-mail:dianweiliu@gmail.com
  • 作者简介:贾明明(1986-),女,吉林省图们人,博士生,主要从事资源环境遥感研究。E-mail:jiamm691@163.com
  • 基金资助:

    国家重点基础研究发展计划(2012CB956103)。

Coastline Changes in Hangzhou Bay Based on Object-oriented Method Using Multi-source Remote Sensing Data

JIA Mingming1,2, LIU Dianwei1, WANG Zongming1, TANG Xuguang1,2, DONG Zhangyu1,2   

  1. 1. Key Laboratory ofWetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-10-31 Revised:2012-12-16 Online:2013-04-25 Published:2013-04-18

摘要: 本文以1983-2011 年的多源遥感数据为基础, 利用GIS 空间分析和地图代数功能, 提取杭州湾海岸线, 分析了其变迁的位置、长度, 以及增加和减少的陆地面积。结果表明:受到自然和人为因素的影响, 杭州湾南北两岸的海岸线变迁规律不同。杭州湾北岸1983-1993 年共有60.2km的海岸线向陆迁移, 最大迁移距离0.6km, 减少的陆地面积共为23.5km2。1993-2011 年由于围垦和工业填海北岸向海迁移。其中,1993-2002 年最大迁移距离3.6km, 新增陆地面积42.5km2, 2002-2011 年最大迁移距离2.9km, 新增陆地面积61.0km2。由于淤积和围垦, 杭州湾南岸海岸线不断向海迁移, 1983-1993 年、1993-2002 年和2002-2011 年向海迁移最大距离分别是1.8km、2.7km和5.1km, 新增陆地面积分别为34.3km2、230.2km2及331.7km2。海岸线向海迁移的速度越来越快, 规模越来越大。研究成果对于地图制图、滨海湿地生态资源管理, 以及海岸线保护具有十分重要的意义。

关键词: 面向对象方法, 遥感, 海岸线, 潮位修正, 杭州湾

Abstract: The coastline is defined as the line of contact between land and a body of water. Coastline change detection is critical issues for coastal resource management, coastal environmental protection, and sustainable development and planning. Changes of coastline may be caused by natural processes and/or human activities. Over the past 30 years, the coastal sites in Hangzhou Bay have been under an intensive restraint associated with population growth and economic development. This study introduced object-oriented classification method to monitor coastline changes in Hangzhou Bay using multi-source remote sensing data, i.e., Landsat Multispectral Scanner (MSS) image in 1983, Landsat Thematic Mapper (TM) image in 1993, Landsat Enhanced Thematic Mapper Plus (ETM + ) image in 2002, and Environment Satellite Charge Coupled Device (CCD) image in 2011. Results showed that, from 1983 to 1993, there was 60.2 km northern coastline moved landward with the maximum distance of 0.6 km and a lost area of 23.5 km2, because of the coastal erosion. And from 1993 to 2011, the northern coastline moved seaward because of land reclamation and construction. From 1993 to 2002, this part of coastline moved seaward with the maximum distance of 3.6 km and 42.5 km2 filled up areas. From 2002 to 2011, it moved seaward with the maximum distance of 2.7km and 61.0 km2 filled up areas. From 1983 to 1993, natural processes were the main reasons for northern coastline recession. During the study periods, southern coastline of Hangzhou Bay moved seaward caused by sedimentation and land reclamation. From 1983 to 1993, 1993 to 2002, and 2002 to 2011, this coastline moved seaward with the maximum distance of 1.8km, 2.7 km and 5.1 km, respectively, and with area of 34.3 km2, 230.2 km2 and 331.7km2 sea surfaces turned into mainland, respectively. Southern coastline moved seaward was the result of natural processes and human activities. From 1983 to 2011, the filled up areas were growing faster and larger. The result of this study can provide valuable information for Hangzhou Bay coastline dynamics and may assistant to the coastal land management and sustainable development and planning.

Key words: object-oriented method, remote sensing, coastline, coastline position modification, Hangzhou Bay