Monitoring Drought and Its Impact on Agriculture Using Drought Indices and Geoinformatics Technology in Patan District, Gujarat
Journal Title: International Journal of Environment and Geoinformatics - Year 2019, Vol 6, Issue 2
Abstract
Remote sensing (RS) and Geographic Information System (GIS) has played a major role in the study of different types of drought i.e. agricultural or hydrological drought. The present study on agricultural Drought assessment was carried out in the Patan District of North Gujarat, India. This study focuses on the assessment of climate change and its impact on Agriculture using Remote Sensing (RS) and GIS technology. The Landsat-7 TM and Landsat-8 OLI data of February-2002 and February-2018 covering Patan District was analysed for Land use/Land Cover mapping and monitoring changes in agricultural area over the period of 16-years. The Spectral vegetation index namely Normalized Difference Vegetation Index (NDVI) was computed using Landsat-7 TM and Landsat-8 OLI digital data for assessment of changes in agricultural vegetation during the drought and normal monsoon periods. Meteorological data like Minimum & maximum Temperatures and rainfall was collected from State Data Centre. Various Drought indices like Standardized Precipitation Index (SPI), Potential Evapo-Transpiration (PET) and Aridity Index (AI) were computed using meteorological data of past 16-years. The results indicate that total agricultural vegetation during drought season was only 21.9 per cent (2002) which has increased to 58.7 per cent during the normal monsoon season of 2018. The rainfall deviations were computed for various years and it was observed that high negative rainfall deviations (-40 to -70%) having low rainfall occurrence were associated with negative SPI values ranging from -0.5 to -1.1 in Patan district. These positive rainfall deviations were associated with positive SPI values of 1.08, 0.57 and 0.62 of respective years indicating moderately wet and mildly wet conditions. During drought year of 2002 total precipitation was very less resulting in Aridity Index of 0.09 which is classified as hyper arid for the Patan District.
Authors and Affiliations
Mithwa Acharya, Shital . H. Shukla, Manik H. Kalubarme
Keywords
Related Articles
- EP ID EP640164
- DOI 10.30897/ijegeo.554465
- Views 104
- Downloads 0
An Empirical Investigation on Hydro-Morphological Process of Surma River: Substantiation from North-East Zone of Bangladesh
Objective of the study is to know the inherent morphological process of the river system in the Haor areas of sylhet basin. The specific objective is to “validate the existing conceptual Model of the CEGIS”. This researc...
Plio-Quaternary Sandy Deposits and Microbial Buildups at the Southern Marmara Shelf Near Shoreface Area, Turkey
Understanding the formation and evolution mechanism of the sandy deposits plays key role to define the hydrodynamics of the shelves and coasts. The barrier islands determined from high resolution chirp seismic reflection...
Performance of the Persulfate/UV-C Process for the Treatment of Dimethyl Phthalate from Aquatic Environments
Phthalate esters (PAEs) are used as plasticizers to impart flexibility and resilience to plastic products. In recent years, PAEs are a controversial issue because many phthalates are suspected to be mutagens, hepatotoxic...
Deformation Analysis by Geomatic and Geotechnical Methods in Highway Tunnels
In the highway transportation network, the tunnel has an important place. Tunnels are used to provide safe, comfortable and economical transportation in areas where topography is not available. In addition to the facilit...
The Reflection of the Mesopotamia Water Transportations in Figurative Arts
The Euphrates and the Tigris, which were the natural sources for the communities living in Mesopotamia, influenced the culture and the art of this civilization. We see this situation on the reliefs, wall paintings, and e...