Estimation of biomass distribution in Peninsular Malaysia and in the islands of Sumatra, Java and Borneo based on multi-resolution remote sensing land cover analysis |
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Authors: | Jukka Miettinen Soo Chin Liew |
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Institution: | (1) Centre for Remote Imaging, Sensing and Processing (CRISP), National University of Singapore, Lower Kent Ridge Road, 119260 Singapore, Singapore |
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Abstract: | In this study we used high resolution (20 m) land cover maps to derive detailed information on land cover structure within
the classes of a regional medium resolution (500 m) land cover map. This enabled improved biomass estimation for the medium
resolution land cover classes. Although our results suggested that land cover maps based merely on medium resolution remote
sensing data can be used to monitor the extent of forest cover, they also showed that these maps alone are not sufficient
to produce reliable regional estimates on above ground biomass in insular Southeast Asia. A quarter of the study area was
covered by sub-pixel size (500 m) mosaic of various land cover types containing 14% of biomass. In total, non-forest areas
covered over 60% of the study area and included 43% of biomass. In these areas, highly fragmented within class land cover
structure was shown to significantly affect biomass estimates. Therefore we conclude that forest/land cover monitoring based
merely on medium resolution remote sensing data can no longer be used to sufficiently quantify carbon fluxes connected to
land cover changes in insular Southeast Asia, but multi-resolution approaches are needed to perform this task. |
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Keywords: | Biomass monitoring Carbon flux Southeast Asia |
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