The analysis of mangrove forest changes period of 20 years in Can Gio Biosphere Reserve, Viet Nam using remote sensing and GIS technology
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Issue Date
2018
Authors
Nguyen, Luong Viet
To, Tu Trong
Trinh, Hong Xuan
Hoang, Thu Thuy Luu
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Subject
Abstract
On January 21, 2000, the MAB/UNESCO Committee recognized the Can Gio mangrove forest as an International Biosphere Reserve. The MAB/UNESCO committee requires every potential biosphere reserve to be assessed for a period of 10 years. During this time, the ecology of the area is closely reviewed, including the vegetation cover. This study used 45 sample plots in the field and utilized Remote Sensing and Geographic Information Systems (RS & GIS) technology for mapping, allowing for the close observation of changes in the mangrove forest during a 20 year period (1996-2016). The results show that, from the SPOT, Landsat 8 OLI satellite imagery, we can categorize the land cover maps in Can Gio Mangrove Biosphere Reserve, including periods of 1996, 1999, 2004, 2009 and 2016, into six classes: dense mangrove forest, open mangrove forest, young mangrove forest and scrub, agriculture land, water body, and barren land. The accuracy of the land cover maps for 1996, 1999, 2004, 2009 and 2016 was high, with scores of 84.89 percent, 83.89 percent, 87.78 percent, 82.78 percent, and 84.44 percent, respectively.