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1 March 2014 A Mapping and Monitoring Assessment of the Philippines' Mangrove Forests from 1990 to 2010
Jordan Long, Darrell Napton, Chandra Giri, Jordan Graesser
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Long, J.; Napton, D.; Giri, C., and Graesser, J., 2014. A mapping and monitoring assessment of the Philippines' mangrove forests from 1990 to 2010.

Information on the present condition and spatiotemporal dynamics of mangrove forests is needed for land-change studies and integrated natural resources planning and management. Although several national mangrove estimates for the Philippines exist, information is unavailable at sufficient spatial and thematic detail for change analysis. Historical and contemporary mangrove distribution maps of the Philippines for 1990 and 2010 were prepared at nominal 30-m spatial resolution using Landsat satellite data. Image classification was performed using a supervised decision tree classification approach. Additionally, decadal land-cover change maps from 1990 to 2010 were prepared to depict changes in mangrove area. Total mangrove area decreased 10.5% from 1990 to 2010. Comparison of estimates produced from this study with selected historical mangrove area estimates revealed that total mangrove area decreased by approximately half (51.8%) from 1918 to 2010. This study provides the most current and reliable data regarding the Philippines mangrove area and spatial distribution and delineates where and when mangrove change has occurred in recent decades. The results from this study are useful for developing conservation strategies, biodiversity loss mitigation efforts, and future monitoring and analysis.

Jordan Long, Darrell Napton, Chandra Giri, and Jordan Graesser "A Mapping and Monitoring Assessment of the Philippines' Mangrove Forests from 1990 to 2010," Journal of Coastal Research 30(2), 260-271, (1 March 2014).
Received: 8 March 2013; Accepted: 8 June 2013; Published: 1 March 2014
decision tree classification
mapping land cover
Philippines' mangrove
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