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Remote Sensing a Tool to Measure and Monitor Tea Plantations in Northeast India (5113)

Rishiraj Dutta (Netherlands)
Mr. Rishiraj Dutta
PhD Student
University of Twente
Department of Earth Observation Science
Faculty ITC, Mail Box: 162, P.O Box: 217
Enschede
7500 AE
Netherlands
 
Corresponding author Mr. Rishiraj Dutta (email: rishi.journal[at]gmail.com, tel.: + 31-638352401)
 

[ abstract ] [ paper ] [ handouts ]

Published on the web 2011-02-10
Received 2010-11-22 / Accepted 2011-02-10
This paper is one of selection of papers published for the FIG Working Week 2011 in Marrakech, Morocco and has undergone the FIG Peer Review Process.

FIG Working Week 2011
ISBN 978-87-90907-92-1 ISSN 2307-4086
http://www.fig.net/resources/proceedings/fig_proceedings/fig2011/index.htm

Abstract

Tea yield has stagnated in Northeast India which is attributed to several factors such as old age of tea bushes, declining soil health, waterlogging and increased incidence of pests and diseases. Therefore monitoring tea using remote sensing has become a pressing need. Understanding the effect of waterlogging, and biophysical status of the tea would help the estates to take effective measures when the need arises. Delineating waterlogged tea areas showed that waterlogging was caused by blocking of natural drainage by eutrophication, built up areas and siltation and this could be well monitored through remote sensing. Establishing an empirical equation between MODIS derived NDVI and LAI showed that LAI in tea had significant and linear relationship with NDVI. However, the NDVI observation at different time periods alone could not explain much variance in tea leaf yield. The study took into consideration different methods and approaches that could fit well in monitoring and quantifying tea plantations from time to time. It also indicated that the tea area problems can be easily monitored by using a GIS platform.
 
Keywords: Remote sensing; tea plantations; NDVI; LAI; waterlogging; biophysical status

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