Estimation of Surface Soil Erosion Using Usle Model (Modified) Of Dhupguri Block, Jalpaiguri (West Bengal)

By : Snehasish Saha , Debarshi Ghosh

Page No: 35-56

Abstract
The mountain alluvial tracts of Dooars in North-Bengal receives soil erosion through rain wash and splash hit removal of surface soil along the local slopes is a common case in the study area especially from the elevated terraces for example Redbank and Chamurchi Tea-garden areas composed of high percent of silt and very fine sand that promotes moderate to high rate of infiltration on surface runoff. Fallowing, rotational agricultural practices, gully cuts in the tea gardens, channel avulsion and occasional floods of high frequency etc. have aggravated the occurrence here associated with human interferences in the form of tea plantation and habitations. Field investigation (2015 and 2017) revealed the estimated soil loss of 0. 2-0.5 kgm2-1 year-1 for selected plots over the colluvio-alluvial tracts of the Dooars in Dhupguri CD-block. In the present paper the authors have tried to estimate the soil erosion taking case sites and thereby investigate the soil loss characters using USLE model of Wischmeier and Smith (1962) with site specific modifications. For which collected samples have tested. The speculated achievement of the work is to focus the aspects of necessary remedial strategies to check soil erosion aiming to agronomic development and benefits.

Authors :
Snehasish Saha : Assistant Professor, Department of Geography & Applied Geography, University of North Bengal.
Debarshi Ghosh : Assistant Professor, Dhupguri Girls’ College.
 

DOI: https://doi.org/10.32381/ATNAGI.2019.39.01.3