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Climate Change and Its Impact on Thar Desert Ecosystem

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Title Climate Change and Its Impact on Thar Desert Ecosystem
Not Available
 
Creator Surendra Poonia
A.S.Rao
 
Subject Climate change, Water demand, Thar desert
 
Description Not Available
Thar Desert region of western Rajasthan which spreads in around 19.61 million ha, is very fragile and is
subjected to excessive stresses due to frequent drought and low rainfall, which occurs once in 2 or 3
years in the region, causing extreme stress to fauna due to limited seasonal grazing resources. The Inter Governmental Panel on Climate Change (IPCC, 2007) and the PRECIS model have projected hotter
days and warm nights and a reduction in rainfall in Thar region by 21st century. Such projected climate
change results in shifting rainfall pattern, higher temperatures, more demand for water and will be
significant driver of biodiversity with changing life cycles, loss, migration and invasion of new habitat
in Thar region. To understand the climate changes in Thar region, long-term trends in annual rainfall
and temperatures for Thar region were analyzed. The study showed that the air temperatures by the end
of 21st century are likely to increase by +3.3 OC at Bikaner, +3.4OC at Jaisalmer, +2.9OC at Jodhpur and
+2.5OC at Pali. Similarly, the annual rainfall of is likely to be increased by +100 mm at Bikaner, +124
mm at Jaisalmer, -40 mm at Jodhpur and +21 mm at Pali. The spatial and temporal variation in potential
evapotranspiration requirement of Thar region ranged from 2.1 mm/day to 12.2 mm/day and on an
annual basis between 1500 mm to 2220 mm. Further, the impact of projected air temperature upto a rise
of 4 OC by 21st century increases in evapotranspiration requirements by 9 to 23% during monsoon period
and 13-47% during winter period and such increased demand in water due to global warming will
reduce the water and feed resources of Thar region.
Not Available
 
Date 2018-11-15T05:18:17Z
2018-11-15T05:18:17Z
2013-03-27
 
Type Research Paper
 
Identifier 12
0973-032X
http://krishi.icar.gov.in/Publication/handle/123456789/11393
 
Language English
 
Relation Not Available;
 
Publisher Indian Society of Agricultural Physics, New Delhi