Assessment Of Soil Erosion In The Western Ghats Region Of Kannur Using The RUSLE Model And Remote Sensing Data

Yash Karan Luthra*
Periodicity:April - June'2025

Abstract

Soil erosion is a critical factor undermining the ecological resilience and farm productivity of the Western Ghats, particularly in regions like Kannur, Kerala, where high rainfall intensity and steep terrain prevail. This research estimates future soil erosion for the years 2025 and 2026 using the Revised Universal Soil Loss Equation (RUSLE) model, integrated with GIS and remote sensing technologies. The analysis incorporates key RUSLE factors including rainfall erosivity (R), soil erodibility (K), slope length and steepness (LS), land cover (C), and conservation practices (P) to simulate spatial patterns of erosion across the landscape. The predicted annual soil loss for both years is estimated to average 16.92 t/ha/year, with spatial variation indicating erosion severity ranging from slight to highly severe. The LS and C factors were identified as the most influential contributors to soil erosion, especially in hilly regions with sparse vegetation. The resulting erosion risk maps classify the area from least to most severely erosive zones, aiding in the prioritization of areas that require urgent soil conservation interventions. The insights from this study provide valuable inputs for sustainable land management and targeted conservation planning in the ecologically sensitive Western Ghats.

Keywords

Soil erosion, RUSLE model, GIS, Remote sensing, Western Ghats, Kannur, Land use, Slope analysis, Soil loss estimation, Conservation planning.

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