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A System of Geomorphological Mapping for Western Rajasthan with Relevance for Agricultural Land Use

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Title A System of Geomorphological Mapping for Western Rajasthan with Relevance for Agricultural Land Use
Not Available
 
Creator P.C. Moharana
Mahesh Kumar Gaur
Chanchal Choudhary
J.S. Chauhan
R.S. Rajpurohit
 
Subject Geomorphology
mapping
agricultural land use
western Rajasthan
ACZ
GIS
 
Description Not Available
A geomorphological map of arid western Rajasthan has been prepared using a
recently developed classification system for national mapping in India at 1:50,000 scale.
The mapping involved digital interpretation of the false colour composite (FCC) of images
of 2005-06 from LISS-III scanner in the Indian Remote Sensing Satellite (IRS), followed
by field verification of the mapped units and analysis of sediments from key sites. It
resulted in the generation of three-tier mapped information on the origin, processes
and landform units, as well as other digital database on landform characteristics. To
find out the agricultural use of the landforms, a land use map of the same area for
2005-06 was draped on the derived map of landforms, using GIS. Area statistics for all
the maps was generated for each of the four agro-climatic zones in western Rajasthan.
The mapping reveal that landforms of aeolian origin cover the maximum area (~79%),
which dominantly consist of sand dunes (~50%). Landforms of fluvial origin have
been masked over large area by the aeolian features, leaving only 13% area as visible.
Croplands occur on all the major landforms, but irrigated croplands occur dominantly
on older alluvial plains. Sand dunes and sandy plains are dominantly under un-irrigated
croplands, and partly under irrigated croplands, which may increase the risk of sand
mobility. These and other results have been discussed in the paper
Not Available
 
Date 2021-09-14T11:22:07Z
2021-09-14T11:22:07Z
2013-09-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62024
 
Language English
 
Relation Not Available;
 
Publisher Annals of Arid Zone