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Soil erosion assessment and mapping of the algar river watershed (uttar pradesh) using remote sensing technique

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Abstract

This study was undertaken to prepare an inventory on soil erosion of a hilly river watershed — the Aglar watershed, part of Tehri Garhwal and Dehradun districts (U.P.), using terrain physiography and soil survey data obtained from interpretation and analysis of Landsat TM FCC (1:62,500 scale) and limited ground investigations.

The watershed is divided into four broad physiographic units viz. higher Himalayas (> 2000m elevation); lower Himalayas (< 2000m elevation); river terraces and flood plains. Each physiographic unit has been further divided into subunits on the basis of aspects and landuse. Three major orders of soils viz. Inceptisols, Mollisols and Entisols were found in different physiographic units. Soil, and land properties of soilscape units viz. soil depth, texture, structure, slope, landuse and soil temperature regime were evaluated for soil-erosion hazard. The results indicate that in the whole watershed 19.13%, 45.68%, 26.51% and 7.92% areas have been found to be under none to slight, moderate, severe and very severe soil erosion hazard categories, respectively.

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Authors and Affiliations

  1. Indian Institute of Remote Sensing, NRSA, 248 001, Dehra Dun, U.P.

    SK Saha & BM Singh

Authors
  1. SK Saha
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  2. BM Singh
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Saha, S., Singh, B. Soil erosion assessment and mapping of the algar river watershed (uttar pradesh) using remote sensing technique. J Indian Soc Remote Sens 19, 67–76 (1991). https://doi.org/10.1007/BF03008122

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  • DOI: https://doi.org/10.1007/BF03008122

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