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Assessing changes in mangrove forest cover and carbon stocks in the Lower Mekong Region using Google Earth Engine

The Lower Mekong Region (LMR) faces significant loss of mangrove forests, yet limited studies have explored this decline in the region. Here, we employ Google Earth Engine and Landsat satellite imagery to assess changes in mangrove forest cover across Myanmar, Thailand, Vietnam, and Cambodia between 1989 and 2020, with a five-year interval. Accordingly, we estimated carbon stock changes due to changes of forest cover. Our analysis yielded an overall average accuracy of 92.10% and an average kappa coefficient of 0.89 across the four countries. The findings reveal a 0.9% increase in mangrove area in Myanmar, 2.5% in Thailand, and 1.3% in Cambodia, while Vietnam experienced a 0.2% loss annually between 1989 and 2020. Carbon stocks in mangrove forests were estimated at 577.0 ​Tg of carbon or TgC, 250.0 TgC, 61.6 TgC, and 269.0 TgC in 1989 for Myanmar, Thailand, Cambodia, and Vietnam respectively, and increased to 736.0 TgC, 443.0 TgC, 86.7 TgC, and 254 TgC in 2020. Increase in mangrove areas resulted in carbon removals of 42.8 TgCO2 year−1 over the same period above. Depending on policies in these respective countries, such carbon removals could be used to claim for result-based payment under the REDD ​+ ​scheme of the United Nations Framework Convention on Climate Change.

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Additional Info

Field Value
Document type Reports, journal articles, and research papers (including theses and dissertations)
Language of document
  • English
Short title (alternative/varying form of title) Mangroves in the Lower Mekong Region
Topics
  • Deforestation drivers
  • Forest cover
  • Forests and forestry
Geographic area (spatial range)
  • Mekong
Copyright Yes
Access and use constraints

This article is an Open Access which is Under a Creative Commons license: https://creativecommons.org/licenses/by-nc-nd/4.0/

Version / Edition n/a
License Creative Commons Attribution Non-Commercial Share-Alike
Contact

The authors contact Megha Bajaj Natural Resources Management, Department of Development and Sustainability, Asian Institute of Technology, Pathum Thani, 12120, Thailand meghabajaj2018@gmail.com

Nophea Sasaki nopheas@ait.ac.th

Co-author (individual) Megha Bajaj, Nophea Sasaki, Takuji W. Tsusaka, Manjunatha Venkatappa, Issei Abe, and Rajendra P. Shrestha
Publisher Elsevier
Publication date 2024
Pagination 12
General note

This article was received on 6 June 2023, Revised 8 January 2024, Accepted 6 February 2024, Available online 26 February 2024, Version of Record 26 February 2024 via here: https://www.sciencedirect.com/science/article/pii/S2949753124000171

Keywords Mangroves Cover,Lower Mekong Region,Carbon removals,Forest cover change,Result-based payment,REDD+
Date uploaded September 19, 2024, 09:01 (UTC)
Date modified September 24, 2024, 08:42 (UTC)