Remote Sens. 2014, 6(5), 4090-4108; doi:10.3390/rs6054090
Article

Monitoring Changes in Rice Cultivated Area from SAR and Optical Satellite Images in Ben Tre and Tra Vinh Provinces in Mekong Delta, Vietnam

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Received: 13 January 2014; in revised form: 8 April 2014 / Accepted: 24 April 2014 / Published: 2 May 2014
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The objective of this study was to obtain up-to-date information on land use and to identify long term changes in land use, especially rice, aquaculture and other crops in Ben Tre and Tra Vinh provinces in Vietnam’s Mekong Delta. Long-term changes in land-use of the study area have not been studied using long time series of SAR and optical Earth observation (EO) data before. EO data from 1979–2012 was used: ENVISAT ASAR Wide Swath Mode, SPOT and Landsat imagery. An unsupervised ISODATA classification was performed on multitemporal SAR images. The results were validated using ground truth data. Using the Synthetic Aperture Radar (SAR) imagery maps for 2005, 2009 and 2011 were obtained. Different rice crops, aquaculture and fruit trees could be distinguished with an overall accuracy of 80%. Using available optical imagery the time series was extended from 2005 to 1979. Long-term decrease in the rice acreage and increase in the aquaculture acreage could be detected.
Keywords: land-use change; Mekong Delta; Envisat ASAR WSM; Landsat; SPOT; multitemporal SAR; ground truth data; rice; aquaculture
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MDPI and ACS Style

Karila, K.; Nevalainen, O.; Krooks, A.; Karjalainen, M.; Kaasalainen, S. Monitoring Changes in Rice Cultivated Area from SAR and Optical Satellite Images in Ben Tre and Tra Vinh Provinces in Mekong Delta, Vietnam. Remote Sens. 2014, 6, 4090-4108.

AMA Style

Karila K, Nevalainen O, Krooks A, Karjalainen M, Kaasalainen S. Monitoring Changes in Rice Cultivated Area from SAR and Optical Satellite Images in Ben Tre and Tra Vinh Provinces in Mekong Delta, Vietnam. Remote Sensing. 2014; 6(5):4090-4108.

Chicago/Turabian Style

Karila, Kirsi; Nevalainen, Olli; Krooks, Anssi; Karjalainen, Mika; Kaasalainen, Sanna. 2014. "Monitoring Changes in Rice Cultivated Area from SAR and Optical Satellite Images in Ben Tre and Tra Vinh Provinces in Mekong Delta, Vietnam." Remote Sens. 6, no. 5: 4090-4108.


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