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Open AccessArticle

Coastal Mangrove Response to Marine Erosion: Evaluating the Impacts of Spatial Distribution and Vegetation Growth in Bangkok Bay from 1987 to 2017

by Han Xiao 1,2,3, Fenzhen Su 1,3,4,*, Dongjie Fu 1,3, Qi Wang 5 and Chong Huang 1,*
1
State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
3
Collaborative Innovation Center of South China Sea Studies, Nanjing University, Nanjing 210093, China
4
Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China
5
School of Surveying and Geo-Informatics, Shandong Jianzhu University, Jinan 250101, China
*
Authors to whom correspondence should be addressed.
Remote Sens. 2020, 12(2), 220; https://doi.org/10.3390/rs12020220
Received: 20 November 2019 / Revised: 17 December 2019 / Accepted: 3 January 2020 / Published: 8 January 2020
(This article belongs to the Special Issue Remote Sensing of Wetlands)
Long time-series monitoring of mangroves to marine erosion in the Bay of Bangkok, using Landsat data from 1987 to 2017, shows responses including landward retreat and seaward extension. Quantitative assessment of these responses with respect to spatial distribution and vegetation growth shows differing relationships depending on mangrove growth stage. Using transects perpendicular to the shoreline, we calculated the cross-shore mangrove extent (width) to represent spatial distribution, and the normalized difference vegetation index (NDVI) was used to represent vegetation growth. Correlations were then compared between mangrove seaside changes and the two parameters—mangrove width and NDVI—at yearly and 10-year scales. Both spatial distribution and vegetation growth display positive impacts on mangrove ecosystem stability: At early growth stages, mangrove stability is positively related to spatial distribution, whereas at mature growth the impact of vegetation growth is greater. Thus, we conclude that at early growth stages, planting width and area are more critical for stability, whereas for mature mangroves, management activities should focus on sustaining vegetation health and density. This study provides new rapid insights into monitoring and managing mangroves, based on analyses of parameters from historical satellite-derived information, which succinctly capture the net effect of complex environmental and human disturbances. View Full-Text
Keywords: spatial distribution; vegetation growth; coastal mangrove erosion; correlation coefficient spatial distribution; vegetation growth; coastal mangrove erosion; correlation coefficient
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MDPI and ACS Style

Xiao, H.; Su, F.; Fu, D.; Wang, Q.; Huang, C. Coastal Mangrove Response to Marine Erosion: Evaluating the Impacts of Spatial Distribution and Vegetation Growth in Bangkok Bay from 1987 to 2017. Remote Sens. 2020, 12, 220.

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