Mangrove restoration in Vietnamese Mekong Delta during 2015-2020: Achievements and challenges

Frontiers in Marine Science

Marine Science

Bui Thanh Huyen¹  Mai Huong Lam²  Hoang Thi Ha²  Pham Hong Tinh²  Nguyen Thi Hong Hanh²  Truong Van Vinh³  Nguyen Xuan Tung⁴  Richard A. MacKenzie⁵  Pham Minh Hai⁶  Tran Dang Hung⁷ 

[1] Department of Water-Environment-Oceanography, University of Science and Technology of Hanoi, Hanoi, Vietnam;Faculty of Environment, Hanoi University of Natural Resources and Environment, Hanoi, Vietnam;Faculty of Forestry, Nong Lam University, Ho Chi Minh, Vietnam;Mangrove Ecosystem Research Center, Hanoi National University of Education, Hanoi, Vietnam;Pacific Southwest Research Station, United States Department of Agriculture (USDA) Forest Service, Institute of Pacific Islands Forestry, Hilo, HI, United States;Vietnam Institute of Geodesy and Cartography, Ministry of Natural Resources and Environment, Hanoi, Vietnam;Vietnam Institute of Meteorology, Hydrology and Climate Change, Hanoi, Vietnam;

关键词: mangroves;    restoration;    worldview;    Mekong;    Vietnam;   

DOI  :  10.3389/fmars.2022.1043943

 received in 2022-09-14, accepted in 2022-11-14,  发布年份 2022

来源: Frontiers

【 摘 要 】

Mangrove forest in the Mekong Delta plays important roles in protecting coasts from soil erosion and strong waves, supplying seafood, and accumulating carbon. Despite these benefits, mangroves have been and continue to be severely damaged by the impacts of natural and socioeconomic activities. In recent years, large areas of mangrove forest have been restored through planting and other various management actions. In this study, we analyzed high-resolution WorldView-2 images to quantify changes in the mangrove forest in seven coastal provinces (Tien Giang, Ben Tre, Tra Vinh, Soc Trang, Bac Lieu, Ca Mau, and Kien Giang) of the Mekong Delta from 2015 to 2020. Our study is one of the first to analyze mangrove forest change at the commune scale, the smallest official administrative unit in Vietnam, to determine the area of restored mangroves. The potentials and challenges in future mangrove restoration were also assessed by analyzing satellite imagery and field survey data. In the study area, mangrove forest area increased by 11,184 ha (approximately 2,237 ha per year) from 79,593 ha in 2015 to 90,777 ha in 2020. A total area of 16,138 ha (approximately 20.3%) was lost due to mangrove conversion to other land uses, aquaculture activities and coastal erosion, etc., while 27,322 ha (approximately 34.1%) was restored or newly planted during state- and NGO-funded mangrove restoration projects and programs. These results confirmed that mangrove restoration projects and programs have played a significant role in maintaining and increasing mangrove forest cover in Mekong Delta. The results can also assist managers and decision makers in mangrove restoration evaluation, and suggest analyzing WorldView-2 images to monitor mangrove restoration over time in Vietnam.

【 授权许可】

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Copyright © 2022 Tinh, MacKenzie, Hung, Vinh, Ha, Lam, Hanh, Tung, Hai and Huyen