Geoscience Reference
In-Depth Information
table 1.4
Climate change impacts on Indian crop production
Crop
Region
Temperature
CO
2
level
Production impact
Reference
Rice
Uttarakhand
Increased
Doubled
Positive
Achanta (1993)
India
High
Increased
Increase in production under the global
circulation model (GCM) scenario
Mohandass et al.
(1995)
Kerala
Up to 5°C
rise
425 ppm
Increase in production due to fertilisation effect
of CO
2
up to 2°C and also enhances water-use
eficiency but up to 5°C temperature, there is a
continuous decline in rice yield
Saseendran et al.
(2000)
Central, South and
North-West
0.7°C and
1°C
increase
—
Central and South India production will increase
but in the North-West, production will decrease
signiicantly under irrigated condition due to
decrease in monsoon rainfall. Reduction in crop
duration all over due to temperature increase
Rathore et al. (2001)
Northern,
southern, western
and eastern
1-4°C rise
450 ppm
Eastern and western less affected, northern
moderate and southern severely affected. With
CO
2
of 450 ppm and 1.9-2°C increase,
production increased in all regions
Aggarwal and Mall
(2002)
India
Atmospheric
brown clouds
(ABC)
Increase
Auffhammer et al.
(2006)
Rice, wheat
Northern coastal
regions
0.5-2°C rise
Decrease in rice and wheat yields and would
reduce wheat crop duration by 7 days
Sinha and
Swaminathan (1991)
North-West India
2-3°C rise
Increased
Doubling CO
2
increases rice and wheat yield
but at 3°C for wheat and 2°C for rice nulliied
the positive effects of increased CO
2
Lal et al. (1998)
continued
