AGRICULTURAL DROUGHT MONITORING USING GEO-INFORMATICS TECHNOLOGY: A CASE STUDY OF SURENDRANAGAR DISTRICT, GUJARAT
Main Author: | Dr. M. Sakthivel*1, Dr. M. H. Kalubarme2, Panhalkar Bilal Dastagir 3 & Gaikwad Vishal Vilas4 |
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Format: | Article |
Terbitan: |
, 2018
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Subjects: | |
Online Access: |
https://zenodo.org/record/1493912 |
Daftar Isi:
- Drought is the most complex but least understood of all natural hazards. It is broadly defined as “sever water shortage”. In recent years, Geographic Information System (GIS) and Remote Sensing (RS) have played a key role in studying different types if hazards either natural or man-made. This study stresses upon the use of RS and GIS in the field of Drought Risk assessment. Various drought indices were computed using Landsat 7 data of February 2000, Landsat 4-5 TM data of February 2009 and Landsat-8 OLI & TIRS data of February 2018 as well as meteorological data for drought severity assessment and to derive spatiao-temporal drought risk areas facing agriculture in Surendranagar district, Gujarat State. The indices generated included Normalize Difference Vegetation Index (NDVI) for 2000, 2009 and 2018 and meteorological data based Standardized Precipitation Index (SPI) and Aridity Index. Correlation analysis was performed between NDVI, SPI and Aridity index. SPI and Aridity Index values were interpolated to get the spatial pattern of meteorological based drought. NDVI, SAVI, LULC threshold were identified to get the agriculture drought risk. Large historical datasets are required to study drought condition of the study area to study complex interrelationship between spatial data and meteorological data. In this study, the drought prone areas in the Surendranagar district were identified by using Remote Sensing and GIS technology and drought risk areas were to delineate by integration of satellite images, and meteorological Information in GIS environment.