海洋地质前沿2024，Vol.40Issue(4)：60-70,11.DOI:10.16028/j.1009-2722.2023.070
基于遥感影像的浙江省三门湾近40年海岸线及海岸带时空变化分析
Analysis of spatiotemporal changes of coastline and coastal zone in Sanmen Bay,Zhejiang Province in recent 40 years based on remote sensing
摘要
Abstract
The coastline of Sanmen Bay in Zhejiang Province,East China was classified as rocky coastline,sandy coastline,muddy coastline,artificial coastline,and estuary coastline by human-computer interaction based on the Landsat satellite images of 1985,1995,2005,2013,and 2020.The landuse types in the coastal zone of Sanmen Bay were classified as water bodies,forest,bare land,urban,and agriculture using interactive supervision.The results represent that rocky coastline and artificial coastline in the bay have been changed significantly in the past 40 years.Most prominently,the artificial coastline was increased by 80.3 km while the rocky coastline decreased by 79.3 km.The urban and water bodies were the major landuse of recently reclaimed area,which has extended the coastal zone of Sanmen Bay by 130 km2 in accumulation in the last 40 years.The conversions from bare land to urban,bare land to agricultural,and forest to urban are the primary land transfer types in the Sanmen Bay coastal zone.In the past 40 years,the fractal dimension of Sanmen Bay coastline has been decreased from 1.22 to 1.201,and the proportion of artificial coastline and urban has been increased by 13%and 22.57%respectively,in general trends of seaward advancement and rising artificiality/urbanization.Human activities are primarily re-sponsible for the changes in the coastline and coastal zone land use of Sanmen Bay.With the implementation of protection and rational use of the coastal zone,the development and exploitation of the Sanmen Bay coastal zone has been gradually improving and stabilizing.关键词
Landsat卫星图像/三门湾/岸线时空变化/土地利用/遥感Key words
Landsat satellite images/Sanmen Bay/spatial and temporal coastline changes/land use/remote sens-ing分类
海洋科学引用本文复制引用
马苑浩,辜鹏,周春艳,汪求顺..基于遥感影像的浙江省三门湾近40年海岸线及海岸带时空变化分析[J].海洋地质前沿,2024,40(4):60-70,11.基金项目
国家自然科学基金(41606042) （41606042）
海岸灾害及防护教育部重点实验室(河海大学)开放基金(202207) （河海大学）
