Journal of Marine Sciences ›› 2021, Vol. 39 ›› Issue (1): 56-66.DOI: 10.3969/j.issn.1001-909X.2021.01.007

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Analysis of the spatial and temporal variation of Thailand coastline from 1990 to 2020

LUO Zhengyu1,2, ZHANG Li*2,3, CHEN Bowei2,3, SUN Hao1, BI Jingpeng2   

  1. 1. College of Geosciences and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
    2. Key Laboratory of Digital Earth Science, Institute of RemoteSensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;
    3. Key Laboratory of Earth Observation of Hainan Province, Sanya 572029, China
  • Received:2020-03-04 Online:2021-03-15 Published:2021-03-15

Abstract: As a sign element, a large range, long-term shore dynamic changes in the coastal zones, are of great significance to the research of regional coastal environment and human activities. Used the remote sensing techniques, the variation characteristics of Thailand shoreline from 1990 to 2020 was analyzed, such as length changes, type changes, change rate, and the “sea-land” pattern. The results show that: (1) For 30 years, the length of the shoreline of Thailand had a continuous growth trend, but the growth rate was fast at first and then slow down, which patterns were expressed as two kinds: sea-forward expansion and land-forward erosion. From 1990 to 2015, the expansion trend in the shoreline toward the sea gradually slowed, and the erosive trend in the land was gradually increased. The overall change trend from 2000 to 2015 was mainly erosion, but the overall shoreline change in 2015 was expanded to the sea. (2) Thailand shoreline regional variation was significant, the change in the expansion of the banks such as Leam ChaBang was dramatic, and the erosion change in the northern part of Bangkok Bay was obvious. (3) The main driving force for the expansion of Thailand shoreline was the construction of coastal projects, and the main factors of erosion variations were the ocean environment and extreme climate, while policy management acted on the whole process of straighten changes.

Key words: coastline changes, Thailand, drive factor

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