基于Landsat影像的茅尾海河口地貌演变研究  

Study on the Landform Evolution of Maowei Sea Estuary Based on Landsat Image

作　　者：黄梅花 卢远 童新华 韦燕飞 HUANG Meihua;LU Yuan;TONG Xinhua;WEI Yanfei(School of Geographical Science and Planning,Nanning Normal University,Nanning 530001,China;School of Natural Resources and Surveying,Nanning Normal University,Nanning 530001,China)

机构地区：[1]南宁师范大学地理科学与规划学院,广西南宁530001 [2]南宁师范大学自然资源与测绘学院,广西南宁530001

出　　处：《海洋测绘》2020年第6期57-60,65,共5页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41861039,41661043);广西自然科学基金(2015GXNSFAA139234);广西科技重点研发计划(AB16380318)。

摘　　要：为了揭示茅尾海河口1987~2015年间的地貌格局演变和冲於演变,基于Landsat TM/OLI等多期遥感影像,结合海图、波段比值线性水深反演模型,对28年来茅尾海河口面积变化、地貌类型转换趋势、地貌冲淤演变过程进行了分析。研究结果表明:在1987~2015年间河口面积逐渐缩小;地貌类型转换趋势方面主要表现为潮沟向淤泥滩、河口沙坝的转化,淤泥滩向红树林滩转化;地貌冲淤演变方面,红树林滩淤积面积较大,达20.78 km^(2),淤泥滩的冲刷作用显著,冲刷面积达26.78 km^(2)。研究结果可为未来茅尾海资源的开发建设、整治保护提供理论依据。Based on the multi-stage remote sensing images such as Landsat TM/OLI,combined with the linear bathymetric inversion model of chart and band ratio,this paper analyzes the change of Maowei estuary area,the change trend of geomorphology type and the evolution process of geomorphology erosion and siltation in the past 28 years.The results show that the area of estuarine decreased gradually between 1987 and 2015,the transition trend of geomorphologic type was mainly reflected in the transformation of tidal ditch to silt beach and estuarine sand dam,and the transformation of silt beach to mangrove beach.In the aspect of geomorphological erosion and siltation evolution,mangrove beach siltation area was large,up to 20.78 km^(2),and the scour area was 26.78 km^(2).The research results can provide theoretical basis for the development and construction of Maowei Sea resources in the future.

关 键 词：水深遥感 河口地貌 Landsat TM/OLI 波段比值法 茅尾海 冲於演变 

分 类 号：P237.9[天文地球—摄影测量与遥感]