A COMPARISION OF DROUGHT INDICES FOR DIFFERENT DISTRICTS OF CHHATTISGARH

Simple item page
dc.contributor.advisorPuranik, H.V.
dc.contributor.advisorDas, G.K.
dc.contributor.advisorLakpale, R.
dc.contributor.advisor(Smt) Chandrakar, Gayatri
dc.contributor.authorPandey, Vinayak
dc.date.accessioned2017-02-14T11:14:30Z
dc.date.available2017-02-14T11:14:30Z
dc.date.issued2016
dc.description.abstractThe Indian economy has been described as a ‘gamble of monsoon’. India, receives major quantum (74%) of its annual rainfall during southwest monsoon season (June to September). Due to large inter and intra-annual variability in rainfall, the country witnesses frequent droughts in some parts or the other in each year and at times, over large area. Drought is a natural hazard, it has a slow onset, and it evolves over months or even years. It may affect a large region and causes little structural damage. It is called as disaster in slow motion and the area covered is large. If it persists over two to three years, it may lead to famine condition. Aberrant weather is a part of agriculture in India affecting its production. Drought varies from place to place depending upon normal climatic conditions, available water resources, agricultural practices and the various socio-economic activities. The usual impact of droughts is in terms of loss of crops, malnutrition of human beings and cattle, land degradation, loss of other economic activities, spread of diseases, and migration of people and livestock. This present research work on “A Comparison of Drought Indices for different districts of Chhattisgarh” is carried out to study the drought climatology and agricultural drought pattern in different districts of Chhattisgarh. Based on rainfall anomaly analysis, study it was found that out of 24 years, five, six, throughout five drought years occurred at Raipur, Bilaspur, three Jagdalpur and five Ambikapur respectively. Based on aridity index anomaly, 13, 14 and 9 drought years at Raipur, Bilaspur, Jagdalpur and Ambikapur respectively were identified. SPI values showed 10, 24, years of 11 and 12 droughts at Raipur Bilaspur, Jagdalpur and Ambikapur. Thus, meteorological drought analysis based on aridity index anomaly and SPI values showed that 50% of the years are under drought of some intensity or the other. In other words, every alternate year is a drought year in all the four stations. Based on rainfall anomaly, were five large droughts at Raipur and Bilaspur, two at Jagdalpur and four at Ambikapur were identified. While there were only one year of severe drought occurred at Ambikapur, Jagdalpur and Bilaspur. Aridity index anomaly method showed six mild droughts and five large drought at Raipur while it identified five mild drought years and three large drought years at Bilaspur .Six mild and five large drought years at Jagdalpur. Seven mild drought at Ambikapur as per as severe. Disastrous drought came exists as 5 at Bilaspur followed by three Jagdalpur and two Ambikapur, respectively. There was no severe and disastrous drought at Raipur based on aridity index anomaly. However, on the basis of SPI analysis, five mild and three moderate droughts at Raipur, eight mild and two moderate drought at Bilaspur, eleven mild and one moderate drought at Jagdalpur and eight mild and four moderate droughts at Ambikapur were identified . As regards severe drought, based on SPI values two severe and disastrous drought at Raipur, seven drought at Bilaspur and no severe and disastrous drought at Jagdalpur and Ambikapur were occurred. The PET values computed by different methods did not match with each other in all the 12 months. At Raipur and Ambikapur the PET values matched with each other during winter and monsoon months. At Jagdalpur, Hargreaves method of PET values has always higher than any of the other methods viz. Branley-Criddle and Thornthwaite. During summer months interestingly the Modified Penman method of PET values has also higher than the Open pan values in all the months except Thornthwaite method in December and January. Thus, the evapotranspiration pattern at Jagdalpur is different because of layer thickly forested area. On the basis of this study, it was concluded that Aridity index anomaly is better for meteorological drought analysis and Moisture Adequacy Index for agricultural drought analysis. Based on rainfall anomaly Bilaspur looks like most vulnerable district for moderate and severe droughts.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810000887
dc.keywordsCOMPARISION, DROUGHT INDICES, DIFFERENT DISTRICTS, CHHATTISGARHen_US
dc.language.isoenen_US
dc.pages189 p.en_US
dc.publisherIndira Gandhi Krishi Vishwavidyalaya, Raipuren_US
dc.subAgricultural Meteorologyen_US
dc.themeAgriculture, Agrometeorologyen_US
dc.these.typeM.Scen_US
dc.titleA COMPARISION OF DROUGHT INDICES FOR DIFFERENT DISTRICTS OF CHHATTISGARHen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
A COMPARISION DROUGHT INDICES FOR DIFFERENT DISTRICTS OF CHHATTISHGARH1111.pdf
Size:
3.37 MB
Format:
Adobe Portable Document Format
Description:
A COMPARISION OF DROUGHT INDICES FOR DIFFERENT DISTRICTS OF CHHATTISGARH
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Theses