RELATIONSHIP BETWEEN BIOMASS OF NATIVE GRASSLANDS AND REMOTE SENSING DATA
DOI:
https://doi.org/10.22409/GEOgraphia2019.v21i45.a14187Keywords:
Spectral response, MODIS sensor, Pampa BiomeAbstract
Variations of spectral response are directly related to the amount of aboveground biomass vegetation (stored) in addition to other pigments. We estimate the aboveground biomass vegetation through a relationship between aboveground biomass vegetation in grassland native collected in the field and remote sensing data in the hot and cold seasons of the period from 2012 to 2014. To estimate the biomass of grassland native air from spectral data, the data were related to amount of instant air field collected biomass during the period 2012 to 2014 versus the spectral response of vegetation data (measured by MODIS sensor). From the development of a temporal profile of data and a scatter plot between aboveground biomass values and spectral data, conducted analyses of correlation and linear regression analysis, noting the relationship between these two sets of data. In this way, it was observed a relationship between aboveground biomass and the indices EVI and NDVI and NIR spectral band, with highest values in summer and lower in winter. The correlation coefficient was significant for the bands of blue, red, NIR, EVI and NDVI. In this way, the resulting model demonstrated the applicability of MODIS images for the estimation of aboveground biomass of grassland vegetation.
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I declare that this article is original, having not been submitted for publication in any other national or international journal, either in part or in its entirety. I further declare that, once published in the journal GEOgraphia, edited by the Graduate Program in Geography of the Universidade Federal Fluminense, it shall never be submitted by me or by any of the other co-authors to any other journal. I also declare that I am aware that failure to observe this commitment will subject the offender to the sanctions and penalties set forth in the Copyright Protection Law (No. 9609, of 02/19/1998).
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