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Study of salinity and waterlogging in Uttar Pradesh (India) using remote sensing data

✍ Scribed by R. S. Dwivedi

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 649 KB
Volume: 5
Category: Article
ISSN: 1085-3278
DOI: 10.1002/ldr.3400050303

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✦ Synopsis

Salinization/alkalization and waterlogging have rendered a sizeable area of India's arable lands unproductive. These highly dynamic phenomena can be studied using remote sensing data collected at regular intervals. Landsat Multispectral Scanner data of 28 February 1975 and 9 March 1990 were interpreted visually to derive information about the spatial extent and distribution of salt-affected soils. A significant decrease in the area of salt-affected soils was noted over this period, which can be attributed to reclamation efforts by government agencies and farmers. On a large scale, i.e. 1:50000, the waterlogged area could also be mapped using a Landsat Thematic Mapper false-colour composite print. KEY WORDS Salinization/alkalization Reclamative Waterlogged Ferromanganese concretions Physiography Monitoring R & crop growing season Physico-chemical characteristics m. crop growing season Landsat thematic mapper India

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