Environmental Studies Of Locust Breeding Grounds Using Satellite Data-a Case Study Of Western Rajasthan Desert (India) | 2458
Journal of Earth Science & Climatic Change
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In the desert region, Locusts are the main insect pests of rangelands adversely affecting the annual production and cause serious
damage to the national economy. The paper incorporates results of the research work carried out on the breeding ground and
surveillance of locusts of western parts of Rajasthan desert (India) using satellite remote sensing and GIS techniques at regional
level using multi-thematic layer spatial and non-spatial information based on IRS P6 AWiFS and LISS-III geo-coded digital
satellite data products for suitable dates at 1: 250, 000 scale and other ancillary data. The integrated analysis was carried out to
identify clusters of locust habitat.
The vegetation status at 30 spots and other areas of scheduled desert area was delineated, classified, mapped and divided
into five vegetation classes such as high (above 80%), moderate(between 51 to 80 %), low(between 31 to 50%), very low(between
11 to 30%) and nil(below 10%). Vegetation available on the ground identified through digital image processing of satellite data
using Normalized Differential Vegetation Index (NDVI)for forecasting of vulnerable areas for the upsurge of desert locusts. The
locust data (mainly types, population and location) was plotted to see the breeding behavior of desert locusts. From analysis it
was observed that the populations are noticed in vegetation classes �moderate� and �high�. A point coverage using hand-held
Global Positioning System (GPS) created in Arc/Info was also used. Out of 270 locations, 35 locations are highly sensitive where
locusts were observed more than four times. The results of the integrated spatial analysis were compared with results of ground
truth data. There are seven clusters where favourable conditions exist for locust breeding. It was concluded that remote sensing
and GIS technology could be utilized regularly with support of limited ground truth for identification and monitoring of locust
Dr. Sarvesh Palria is Professor (Environmental Science) and Head in the Department of Remote Sensing and Geo-informatics, M.D.S. University, Ajmer, Rajasthan (India). He obtained PhD. from Sukhadia University, Udaipur (India) in 1984. He served more then 8 years as Scientist/Engineer, Space Applications Centre, (ISRO), Department of Space, Ahmedabad (India). He has worked as Project Investigator/Project coordinator in many National and International research projects sanctioned by University Grants Commission , New Delhi ,Ministry of Environment and ISRO. He is having more than 70 research papers published in Journals/Proceedings/Research and Scientific reports.
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