Agriculture Reference
In-Depth Information
much as 25%. However, the majority of the North-Eastern region, except
for Mizoram Tripura, Manipur and Assam, shows an increase in ET in the
2030s. As a result, the reduction in water yield for the Arunachal Pradesh
is up to about 20%. There is an increase in the water yield to up to about
40% in Assam and Manipur.
5.3.3 CHANGES IN PRECIPITATION AND RAINFALL
The majority of the North-Eastern region, but for some parts of Mizoram,
Tripura, Manipur and Assam, shows an increase in ET during the 2030s
scenario. It is interesting to note that even those parts of Arunachal Pradesh
that were showing a decrease in precipitation, show an increase in ET.
This can only be explained by the occurrence of higher temperatures that
enhance the evaporative force. However, the increase in ET ranges from a
small fraction to about 20%. The reduction in ET in the southern portion
is only marginal. The trend in water yield in the North-Eastern region is
similar to the precipitation trend. The areas that have shown less increase
in precipitation show a correspondingly low water yield. The reduction in
water yield in Arunachal Pradesh is up to about 20%. An increase in water
yield is seen in Assam and Manipur and the magnitude is up to about 40%.
The North-Eastern region also shows a considerable increase in sedi-
ment yield for the majority of the areas which are expected to see increase
in precipitation. The increase in the sediment yield in the region is up to
25%. There are a few areas of Arunachal Pradesh that are expected to
receive less rainfall and show a reduction in sediment yield of up to 25%
under the 2030s scenario.
5.3.4 IMPACTS OF CLIMATE CHANGE ON HORTICULTURE
5.3.4.1 PRODUCTION SYSTEM
Little work has been done with respect to impact of climate change on
Horticulture. The simulation analysis indicates that the potato yields are
likely to be marginally benefited up to 5% in upper parts of NE region
due to climate change influence, but in the central part, the yields are pro-
jected to reduce by about 4% while in the southern parts of NE region, the
negative impacts will be much higher. Wurr et al. (1996) reported that by
