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Assessment of spatio-temporal vegetation dynamics in tropical arid ecosystem of India using MODIS time-series vegetation indices

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Relation http://oar.icrisat.org/11542/
https://doi.org/10.1007/s12517-020-05611-4
doi:10.1007/s12517-020-05611-4
 
Title Assessment of spatio-temporal vegetation dynamics in tropical arid ecosystem of India using MODIS time-series vegetation indices
 
Creator Reddy, G P A
Kumar, N
Sahu, N
Srivastava, R
Singh, S K
Naidu, LG K
Chary, G R
Biradar, C M
Gumma, M K
Reddy, B S
Kumar, J N
 
Subject GIS Techniques/Remote Sensing
Semi-Arid Tropics
 
Description In the present study, we analyzed spatio-temporal vegetation dynamics to identify and delineate the vegetation stress zones in
tropical arid ecosystem of Anantapuramu district, Andhra Pradesh, India, using Normalized Difference Vegetation Index
(NDVI), Vegetation Condition Index (VCI), and Vegetation Anomaly Index (VAI) derived from time-series Moderate
Resolution Imaging Spectroradiometer (MODIS) 16-day products (MOD13Q1) at 250 m spatial resolution for the growing
season (June to September) of 19 years during 2000 to 2018. The 1-month Standardized Precipitation Index (SPI) was computed
for 30 years (1989 to 2018) to quantify the precipitation deficit/surplus regions and assess its influence on vegetation dynamics.
The growing season mean NDVI and VCI were correlated with growing season mean 1-month SPI of dry (2003) and wet (2007)
years to analyze the spatio-temporal vegetation dynamics. The correlation analysis between SPI and NDVI for dry year (2003)
showed strong positive correlation (r = 0.89). Analysis of VAI for dry year (2003) indicates that the central, western, and southwestern
parts of the district reported high vegetation stress with VAI of less than − 2.0. This might be due to the fact that central
and south-western parts of the district are more prone to droughts than the other parts of the district. The correlation analysis of
SPI, NDVI, and VCI distinctly shows the impact of rainfall on vegetation dynamics. The study clearly demonstrates the
robustness of NDVI, VCI, and VAI derived from time-series MODIS data in monitoring the spatio-temporal vegetation dynamics
and delineate vegetation stress zones in tropical arid ecosystem of India.
 
Publisher Springer, Saudi Society for Geosciences
 
Date 2020-06
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11542/1/06_Spatio-temporal%20dynamics-arid%20ecosystems_AJG.pdf
Reddy, G P A and Kumar, N and Sahu, N and Srivastava, R and Singh, S K and Naidu, LG K and Chary, G R and Biradar, C M and Gumma, M K and Reddy, B S and Kumar, J N (2020) Assessment of spatio-temporal vegetation dynamics in tropical arid ecosystem of India using MODIS time-series vegetation indices. Arabian Journal of Geosciences (TSI), 13 (15). pp. 1-13. ISSN 1866-7511