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Michael J Furniss
Humboldt State University, USA
Agriculture, Biological Sciences & Forestry Environmental Science Social Sciences

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Classification Methods for Mapping Mangrove Extents and Drivers of Change in Thanh Hoa Province, Vietnam during 2005-2018 Hai-Hoa Nguyen; Nghia Huu Nghia; Hien Thi Thu Nguyen; An Thanh Le; Lan Thi Ngoc Tran; Linh Vo Khanh Duong; Simone Bohm; Michael J Furniss
Forest and Society Vol. 4 No. 1 (2020): APRIL
Publisher : Forestry Faculty, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1098.736 KB) | DOI: 10.24259/fs.v4i1.9295

Abstract

Mangrove forests have been globally recognised as their vital functions in preventing coastal erosion, mitigating effects of wave actions and protecting coastal habitats and adjacent shoreline land-uses from extreme coastal events. However, these functions are under severe threats due to the rapid growth of population, intensive shrimp farming and the increased intensity of severe storms in Hau Loc and Nga Son districts, Thanh Hoa province. This research was conducted to monitor spatial-temporal changes in mangrove extents using Landsat and Sentinel imageries from 2005 to 2018. Unsupervised and supervised classification methods and vegetation indices were tested to select the most suitable classification method for study sites, then to quantify mangrove extents and their changes in selected years. The findings show that supervised classification was the most suitable in study sites compared to vegetation indices and unsupervised classification. Mangrove forest extents increased by 7.5 %, 38.6 %, and 47.8 % during periods of 2005 - 2010, 2010 - 2015 and 2015 - 2018, respectively. An increase of mangrove extents resulted from national programs of mangrove rehabilitation and restoration during 2005- 2018, increased by 278.0 ha (123.0 %).
Co-Authors An Thanh Le Hai-Hoa Nguyen Hien Thi Thu Nguyen Lan Thi Ngoc Tran Linh Vo Khanh Duong Nghia Huu Nghia Simone Bohm