Spatial distribution of land use concentration and land-use efciency of the Kakodonga river basin, Assam

Abstract

The Kakodonga river basin covers an area of about 1,113 km . The average maximum temperature is
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28.5 C and the minimum temperature is 18.4 C. The average rainfall of the basin is 1766 mm. The present
paper is an attempt to analyse spatially land-use concentration and land-use efciency of the Kakodonga
river basin. For the preparation of thematic maps, Survey of India topographic sheets and IRS P6 LISS-III
imagery (2011) data are used. The land-use categories data has been collected for three years (2012-2014)
at the revenue circle level from the Economic and Statistical Department of Assam. To work out land-use
concentration Bhatia's (1965) method was adopted. The major land-use categories are forest cover, area
put under non-agricultural use, barren lands, permanent pastures, and other grazing lands, miscellaneous
trees and groves, culturable wasteland, current fallow land, other fallow lands, and the net area sown. The
land-use efciency has been worked out taking ve positive variables are net sown area, total irrigated
area, area irrigated more than once, the intensity of irrigation, and intensity of crops.