17 March 2003 Spectral signature and temporal variation in spectral reflectance: keys to identify rubber vegetation
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Abstract
Temporal data acquired during January to March 1997 pertaining to two study areas dominated by rubber, teak and mixed forest was processed. This particular period of study included wintering and post-wintering times during which defoliation and refoliation take place in rubber. An increase in the reflectance in green band and near infrared band over time from January to March 97 while a decrease was seen for red band in rubber plantations. Highest temporal variation was seen in rubber. In teak a decrease in the reflectance for green band and near infrared band from January to March 97 and an increase in red band were seen, opposite to that of rubber vegetation. In mixed forest there was a decrease in the reflectance in band 2 and band 4 from January to March 97 followed by an increase in band 3, similar to that found in teak plantation. Though teak and mixed forests also shed leaves, the pattern and timing are different such that rubber vegetation could easily be isolated from the other two types of vegetation. This study provided essential information that helps in mapping and monitoring rubber plantations in India or elsewhere.
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D.V.K Nageswara Rao, D.V.K Nageswara Rao, A. I. Jose, A. I. Jose, A.V.R. Kesava Rao, A.V.R. Kesava Rao, } "Spectral signature and temporal variation in spectral reflectance: keys to identify rubber vegetation", Proc. SPIE 4879, Remote Sensing for Agriculture, Ecosystems, and Hydrology IV, (17 March 2003); doi: 10.1117/12.462377; https://doi.org/10.1117/12.462377
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