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 |
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Creator |
Surendra Poonia
A.S.Rao |
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Subject |
Climate change, Water demand, Thar desert
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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 |
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Date |
2018-11-15T05:18:17Z
2018-11-15T05:18:17Z 2013-03-27 |
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Type |
Research Paper
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Identifier |
12
0973-032X http://krishi.icar.gov.in/Publication/handle/123456789/11393 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Indian Society of Agricultural Physics, New Delhi
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