王建步, 张杰, 陈景云, 孙伟富, 马毅. 近30余年辽河口海岸线遥感变迁分析[J]. 海洋环境科学, 2015, 34(1): 86-92. DOI: 10.13634/j.cnki.mes.2015.01.016
引用本文: 王建步, 张杰, 陈景云, 孙伟富, 马毅. 近30余年辽河口海岸线遥感变迁分析[J]. 海洋环境科学, 2015, 34(1): 86-92. DOI: 10.13634/j.cnki.mes.2015.01.016
WANG Jian-bu, ZHANG Jie, CHEN Jing-yun, SUN Wei-fu, MA Yi. Analysis of the Liaohe Estuary coastline changes basing on the remote sensing image in the past thirty years[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2015, 34(1): 86-92. DOI: 10.13634/j.cnki.mes.2015.01.016
Citation: WANG Jian-bu, ZHANG Jie, CHEN Jing-yun, SUN Wei-fu, MA Yi. Analysis of the Liaohe Estuary coastline changes basing on the remote sensing image in the past thirty years[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2015, 34(1): 86-92. DOI: 10.13634/j.cnki.mes.2015.01.016

近30余年辽河口海岸线遥感变迁分析

Analysis of the Liaohe Estuary coastline changes basing on the remote sensing image in the past thirty years

  • 摘要: 利用1979年、1990年、2000年和2013年4个时相的Landsat遥感影像,开展了30余年辽河口海岸线遥感变迁分析研究.结果表明:(1)1979~2013年间,辽河口岸线不断向海推进,海岸线长度总体呈增加趋势,目前岸线长度为298 km,较1979年增加了63 km,陆域面积增加了410 km2;(2)辽河口自然岸线中的淤泥质岸线减少显著,近70%的淤泥质岸线转化为港口、盐田和养殖围堤岸线;1979~1990年间淤泥质岸线主要转化为了盐田和养殖围堤岸线,进入新世纪因盘锦港的建设,使得盐田围堤岸线转化为了港口岸线;(3)1979~1990年、1990~2000年、2000~2013年3个时段辽河口岸线变迁速率分别为94.2 m/a、52.1 m/a、81.0 m/a,尤其二界沟镇在1990~2000年间,因盐田建设导致海岸线迅速向海推进,海岸线变迁速率达到了1200 m/a;(4)辽河河流入海口门和河道也发生了较大变化,由于大规模的养殖开发和盐田建设围海导致双台子河入海口门变窄,而大辽河入海口门由于盐田和港口建设导致河口变窄;双台子河道和大辽河道主要由于泥沙淤积和养殖围填,也导致了河道局部变窄.

     

    Abstract: In this paper, the changes of Liaohe Estuary coastline of a period of more than 30 years was studied by using 4 phases of Landsat data, which were 1979, 1990, 2000 and 2013. The result show that: (1)The coastline of Liaohe Estuary continuously moves forwards to the sea from 1979 to 2013. At present, the total length of the coastline is 298 km, which increased 63km comparing to 1979, while land area increased 410 km2. (2) Natural coastline of Liaohe Estuary reduced significantly with nearly 70% of the muddy coastline transforming into reclamation coastline of port, salt pan and farming. From 1979~1990, the muddy coastline transformed into reclamation coastline of salt pan and farming,however, salt pan coastline transformed into port coastline because of the construction of Panjin Port with the new century coming.(3)The coastline of the Liaohe Estuary has 3 change rates which are 94.2 m/a at the period of 1979~1990, 52.1 m/a at the period of 1979~1990 and 81.0 m/a at the period of 2000~2013. In the town of Erjiegou,the coastline moved forwards to the sea rapidly because of the construction of the salt pan, and the coastline change rate reached up to 1200 m/a in the period of 1990~2000. (4) Liaohe riverway changed greatly.Due to the large-scale aquaculture development and salt pan construction, Shuangtai River gate to the sea narrowed; Due tothe construction of salt pan and port, Big Liaohe gate to the sea also narrowed; Shuangtai riverway and Daliaohe riverway narrowed because of siltation and the reclamation. Mainly due to siltation and the reclamation, Shuangtaizi riverway and Daliaohe riverway narrowed partially.

     

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