Previous literature provides evidence related to the slump movement arising due to heavy rainfall in the Jotiba-Panhala hill range in a part of western ghat. The trend of this hill range is east-west, and it divides two easterly flowing rivers, Panchaganga and Warna. The present work is undertaken for the delineation of land degradation vulnerability sites using 11 thematic layers, viz., drainage density, slope, land cover, Normalized Difference Vegetation Index (NDVI), soil texture and depth, rainfall, land surface temperature (LST), multi-resolution index of valley bottom flatness (MRVBF), Terrain Ruggedness Index (TRI), and soil organic carbon (SOC). The land degradation risk zones have been analysed using the Analytic Hierarchy Process (AHP) and Geographical Information Systems (GIS), and the obtained results have been validated with the help of fieldwork observations and Google Earth image evidence. Based on normalised weight in AHP, the risk zones have been classified into five classes, viz., very low risk, low risk, moderate risk, high risk, and very high-risk zones of land degradation. It was finally observed that the very high-risk to high-risk zone of the present study area shows most of the sites where creep movement took place in the last few years. This site has been verified by using Google Earth imagery.

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Identification of Soil Erosion-Susceptible Areas with Analytical Hierarchy Process (AHP) Modelling for Climate Disaster Management

  • Gurav Chandrakant,
  • Dhende Atish,
  • Kulkarni Dhaval

摘要

Previous literature provides evidence related to the slump movement arising due to heavy rainfall in the Jotiba-Panhala hill range in a part of western ghat. The trend of this hill range is east-west, and it divides two easterly flowing rivers, Panchaganga and Warna. The present work is undertaken for the delineation of land degradation vulnerability sites using 11 thematic layers, viz., drainage density, slope, land cover, Normalized Difference Vegetation Index (NDVI), soil texture and depth, rainfall, land surface temperature (LST), multi-resolution index of valley bottom flatness (MRVBF), Terrain Ruggedness Index (TRI), and soil organic carbon (SOC). The land degradation risk zones have been analysed using the Analytic Hierarchy Process (AHP) and Geographical Information Systems (GIS), and the obtained results have been validated with the help of fieldwork observations and Google Earth image evidence. Based on normalised weight in AHP, the risk zones have been classified into five classes, viz., very low risk, low risk, moderate risk, high risk, and very high-risk zones of land degradation. It was finally observed that the very high-risk to high-risk zone of the present study area shows most of the sites where creep movement took place in the last few years. This site has been verified by using Google Earth imagery.