Kumar, SureshSureshKumarPatel, N. R.N. R.PatelAkarsh, A.A.Akarsh2025-08-302025-08-302017-01-012-s2.0-85047000435https://d8.irins.org/handle/IITG2025/23035GEPIC, a GIS based EPIC model was used to simulate the variability in topography, soil and climatic on SOC sequestration and soil erosion processes. The present study was carried out to study the impact of climate change on soil erosion and soil organic carbon (SOC) in agro-ecosystem of Himalayan landscape of Doon valley of Uttarakhand state, India using GIS based Environmental Policy Integrated Climate (GEPIC) model. For erosion assessment, the model predicted rainfall erosivity index factor adjusted to the observed monthly values of the study area (R² =0.95). The current SOC stock for top 30 cm for three dominant soil series namely Barwa, Doiwala and Jassuwala representing the agricultural landscape were simulated. Jassuwala soil series in the study area showed an improvement of 6.3 t ha^-1 SOC over 12 year period (2000 to 2012). The GEPIC model after calibration was used to assess climate change impact on soil erosion and SOC sequestration under different climatic scenarios. The climate change impact on SOC and erosion process under A2a50 scenarios were assessed and the results show that the soil erosion rate will be double than that of the baseline period mainly due to increased rainfall of about 20 per cent during the time period. The study showed a decline in soil carbon in the soil series of Barwa (0.80 t ha^-1 yr^-1) and Doiwala soil series (0.59 t ha^-1 yr^-1) whereas increase in Jassuwala soil series (0.31 t ha^-1 yr^-1) for A2a50 scenario. GEPIC model simulated quite well and helped in assessing spatial variability of soil carbon sequestration in the varying topography and soil types.falseClimate change | GEPIC model | Soil carbon sequestrationConference Paper20170cpConference Proceeding