International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

Volume2,March 2017,

Topic : Agricultural Vulnerability Assessment using GIS: A Case Study of Pallar Basin of Chittoor District, Andhra Pradesh

Authors:T Hemalatha ||

Abstract:Drought is one of the short-term extreme events. There is no operational practice to forecast the drought. Drought indices play a significant role in drought mitigation. In the present study, Pallar basin which is present in Chittoor District of Andhra Pradesh, which are seriously prone to drought, has been established using meteorological and remote sensing based agricultural droughts indices. The meteorological droughts indices was Standard Precipitation index (SPI)and the satellite data based agricultural drought indices was Normalized Difference Vegetation Index (NDVI), Normalized Difference water Index (NDWI). The meteorological and remote sensing based agriculture drought indices has been determined and compared for the period of 2000, 2005 and 2010. The result shows from SPI Index the year 2005 is wet year and the year 2000 and 2010 are dry year. From NDVI index the year 2005 is having more vegetation area and the year 2010 is having less vegetation area. Hence, agricultural drought risk mapping can be used to guide decision making processes in drought monitoring, and to reduce the risk of drought on agricultural productivity..

Keywords: Agricultural vulnerability, NDWI, NDVI, SPI, Mitigation.

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DOI: 01.1617/vol4/iss3/pid10342


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Meinhard Taher Schobeiri
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Texas A & M University, USA.

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