Estimation of Soil loss by USLE Model using GIS and Remote Sensing techniques: A case study of Muhuri River Basin, Tripura, India

Authors : Amit BERA

Pages : 206-215

Doi:10.18393/ejss.288350

View : 77 | Download : 11

Publication Date : 2017-07-01

Article Type : Research Paper

Abstract :Soil erosion is a most severe environmental problem in humid sub-tropical hilly state Tripura. The present study is carried out on Muhuri river basin of Tripura state, North east India having an area of 614.54 Sq.km. In this paper, Universal Soil Loss Equation insert ignore into journalissuearticles values(USLE); model, with Geographic Information System insert ignore into journalissuearticles values(GIS); and Remote Sensing insert ignore into journalissuearticles values(RS); have been used to quantify the soil loss in the Muhuri river basin. Five essential parameters such as Runoff-rainfall erosivity factor insert ignore into journalissuearticles values(R);, soil erodibility Factor insert ignore into journalissuearticles values(K);, slope length and steepness insert ignore into journalissuearticles values(LS);, cropping management factor insert ignore into journalissuearticles values(C);, and support practice factor insert ignore into journalissuearticles values(P); have been used to estimate soil loss amount in the study area. All of these layers have been prepared in GIS and RS platform insert ignore into journalissuearticles values(Mainly Arc GIS 10.1); using various data sources and data preparation methods. In these study DEM and LISS satellite data have been used. The daily rainfall data insert ignore into journalissuearticles values(2001-2010); of 6 rain gauge stations have been used to predict the R factor. Soil erodibility insert ignore into journalissuearticles values(K); factor in Basin area ranged from 0.15 to 0.36. The spatial distribution map of soil loss of Muhuri river basin has been generated and classified into six categories according to intensity level of soil loss. The average annual predicted soil loss ranges between 0 to and 650 t/ha/y. Low soil loss areas insert ignore into journalissuearticles values(<25 t/ha/y); have been recorded under very densely forested areas and intensely plantation insert ignore into journalissuearticles values(mainly Rubber plantation); area. The high rate insert ignore into journalissuearticles values(>70 t/ha/y); of soil erosion was found along the main course of Muhuri River.
Keywords : Soil loss, erosion risk, USLE, GIS, remote sensing, Muhuri river

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