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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/24931
Title: Uncertainty Assessment in Soil Erosion Modelling Using RUSLE, Multisource and Multiresolution DEMs
Authors: Pandey, Ashish
Gautam A.K.
Chowdary V.M.
Jha C.S.
Cerdà A.
Published in: Journal of the Indian Society of Remote Sensing
Abstract: Soil erosion is a key concern for the environment and natural resources since it leads to a decline in-field productivity and soil quality, resulting in land degradation. In this study, assessment of uncertainty in soil erosion modelling of the Karso watershed, India, was carried out by employing the revised universal soil loss equation (RUSLE) and geospatial technologies to evaluate the effect of multi-source digital elevation models (DEMs) [Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), Cartosat and Shuttle Radar Topography Mission (SRTM)] with resampled multi-resolution grids. The rainfall erosivity factor (R) was computed using the mean monthly Tropical Rainfall Measuring Mission rainfall estimates for 1998 to 2012. The slope length factor was derived using the ASTER and Cartosat DEMs at grid sizes of 30 m, 50 m, 100 m, 150 m, 200 m, and 250 m, and for the SRTM DEM at 100 m, 150 m, 200 m and 250 m resolutions for the Karso watershed, Jharkhand, India. Significant differences were obtained in the soil loss estimates across the different DEM sources and resampled grid sizes. The Cartosat DEM with a 200 m grid was found to estimate the soil loss the best out of all the DEM combinations considered. The Cartosat DEM proved to be more reliable than the ASTER and SRTM DEMs. The results indicated that the RUSLE is a scale-dependent model since the model estimates were affected not only by the DEM source but also by its resolution. The prediction of erosion potential by employing the multisource, multiresolution DEMs and the RUSLE helped to identify the soil erosion's spatial pattern within the watershed. The study provided an impact analysis of the uncertainties when selecting the multisource, multiresolution DEMs for soil erosion modelling. © 2021, Indian Society of Remote Sensing.
Citation: Journal of the Indian Society of Remote Sensing, 49(7): 1689-1707
URI: https://doi.org/10.1007/s12524-021-01351-4
http://repository.iitr.ac.in/handle/123456789/24931
Issue Date: 2021
Publisher: Springer
Keywords: ASTER
Cartosat
Grid size
Soil erosion
SRTM
TRMM
ISSN: 0255660X
Author Scopus IDs: 55851948174
56291141100
15829222700
55358899900
57195523298
Author Affiliations: Pandey, A., Department of Water Resources Development and Management, Indian Institute of Technology Roorkee, Roorkee, India
Gautam, A.K., Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar 848125, India
Chowdary, V.M., RRSC-North, National Remote Sensing Centre (NRSC), Indian Space Research Organization, Delhi, India
Jha, C.S., Regional Remote Sensing Centres, National Remote Sensing Centre (NRSC), Indian Space Research Organization, Hyderabad, India
Cerdà, A., Departament de Geografia, Universitat de València, Blasco Ibàñez, 28, Valencia, 46010, Spain
Funding Details: The hydrological data provided by Damodar Valley Corporation (DVC), Hazaribagh, India, and facilities provided by the Department of Water Resources Development and Management, IIT Roorkee, be highly appreciated. Indian Institute of Technology Roorkee, IITR
Corresponding Author: Pandey, A.; Department of Water Resources Development and Management, India; email: ashish.pandey@wr.iitr.ac.in
Appears in Collections:Journal Publications [WR]

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