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Article

A Biophysical Image Compositing Technique for the Global-Scale Extraction and Mapping of Barren Lands

1
Center for Environmental Remote Sensing (CEReS), Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
2
Department of Informatics, Tokyo University of Information Sciences, 4-1 Onaridai, Wakaba-ku, Chiba 265-8501, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Wolfgang Kainz
ISPRS Int. J. Geo-Inf. 2016, 5(12), 225; https://0-doi-org.brum.beds.ac.uk/10.3390/ijgi5120225
Received: 17 July 2016 / Revised: 18 September 2016 / Accepted: 24 November 2016 / Published: 30 November 2016
As the barren lands play a key role in the interaction between land cover dynamics and climate system, an efficient methodology for the global-scale extraction and mapping of the barren lands is important. The discriminative potential of the existing soil/bareness indexes was assessed by collecting globally distributed reference data belonging to major land cover types. The existing soil/bareness indexes parameterized at the local scale did not work satisfactorily everywhere at the global level. A new technique called the Biophysical Image Composite (BIC) is proposed in the research by exploiting time-series of the multi-spectral data to capture global-scale barren land attributes effectively. The BIC is a false color composite image made up of Normalized Difference Vegetation Index (NDVI), short wave infrared reflectance, and green reflectance, which were specially selected from the highest vegetation activity period by avoiding signals from the seasonal snowfall. The drastic contrast between the barren lands and vegetation as exhibited by the BIC provides a robust extraction and mapping of the barren lands, and facilitates its visual interpretation. Random Forests based supervised classification approach was applied on the BIC for the mapping of global barren lands. A new global barren land cover map of year 2013 was produced with high accuracy. The comparison of the resulted map with an existing map of the same year showed a substantial discrepancy between two maps due to methodological variation. To cope with this problem, the BIC based mapping methodology, with a special account of the land surface phenological changes, is suggested to standardize the global-scale estimates and mapping of the barren lands. View Full-Text
Keywords: barren lands; Biophysical Image Composite (BIC); MODIS; random forests; visualization; global mapping; 2030 Agenda for Sustainable Development barren lands; Biophysical Image Composite (BIC); MODIS; random forests; visualization; global mapping; 2030 Agenda for Sustainable Development
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MDPI and ACS Style

Sharma, R.C.; Tateishi, R.; Hara, K. A Biophysical Image Compositing Technique for the Global-Scale Extraction and Mapping of Barren Lands. ISPRS Int. J. Geo-Inf. 2016, 5, 225. https://0-doi-org.brum.beds.ac.uk/10.3390/ijgi5120225

AMA Style

Sharma RC, Tateishi R, Hara K. A Biophysical Image Compositing Technique for the Global-Scale Extraction and Mapping of Barren Lands. ISPRS International Journal of Geo-Information. 2016; 5(12):225. https://0-doi-org.brum.beds.ac.uk/10.3390/ijgi5120225

Chicago/Turabian Style

Sharma, Ram C., Ryutaro Tateishi, and Keitarou Hara. 2016. "A Biophysical Image Compositing Technique for the Global-Scale Extraction and Mapping of Barren Lands" ISPRS International Journal of Geo-Information 5, no. 12: 225. https://0-doi-org.brum.beds.ac.uk/10.3390/ijgi5120225

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