Singh, N. JanakiDeb Barma, Kabir2023-02-032023-02-032020-09https://krishikosh.egranth.ac.in/handle/1/5810193200The experiment conducted in Ri-Bhoi, Meghalaya which lies between 91°20'30" - 92°17'00" E longitude and 25°40' - 26°20' N latitude with 951 m altitude above the mean sea level covering 2448 km2 geographical area (10.92% of state geographical area).Six images of Resoursecat-2 LISS III acquired on 26th October, 2015 (kharif season), 8th December, 2015 (rabi season), 23rd February, 2016 (rabi season), 18th March, 2016 (zaid season), 1st January, 2016 (rabi season) and 17th April 2016 (zaid season) from National Remote Sensing Centre (NRSC), Hyderabad .The DEM (Digital elevation model) data of Ri-Bhoi district, Meghalaya was downloaded from bhuvan (https://bhuvan.nrsc.gov.in). Out of 21 land use land cover 6 agro ecological land use has been taken for creating land use/land cover and slope intersection map using ARC-GIS 10.2. There were 39 strata in the final image and each strata has its own acreage distribution. The maximum area found in tree clad area- closed (32.78%) followed by tree clad area-open (25.96%). The minimum area found in river/stream-dry (0.001%) followed by barren rocky/stony (0.005%). The maximum area of strata were found in S5T2 (22.59%) followed by S4T2 (16.10%) and the minimum found in S7OS1 (0.01%) and S7OS2 (0.01%). The none transformation model was the best transformation model. The SOC interpolated with ordinary kriging prediction exponential model. The nugget/sill ratio of found strong to moderate. In the whole observation (1-12) a positive significant correlation found between slope (1-3) and SOC content and negative significant correlation found between S5,S6,S7 and SOC content at both the depth (0-15cm) and (15-30cm) .In per hectare basis the SOC stock of each strata at 0-15cm soil depth were found maximum in S1T2 (3.72 Mg/ha/month) followed by S2T2 (3.66 Mg/ha/month) and minimum in S7OS1 (2.72 Mg/ha/month) followed by S7OS2 (2.78 Mg/ha/month). The SOC stock of different strata at 15-30cm depth were found maximum in S1T2 (3.49 Mg/ha/month) followed by S2T2 (3.30 Mg/ha/month) and minimum in S7OS1 (2.49 Mg/ha/month) followed by S7OS2 (2.52 Mg/ha/month). On land cover area basis, SOC stock at 0-15 cm depth were found maximum in S5T2 (78.18 Gg/total area (ha)/month) followed by S3T2 (59.27 Gg/total area (ha)/month) and minimum in S7OS1 (0.02 Gg/total area (ha)/month) followed by S7OS1 (0.02 Gg/total area (ha)/month). Similarly, at 15-30 cm depth were found maximum in S5T2 (64.09 Gg/total area (ha)/month) followed by S3T2 (51.88 Gg/total area (ha)/month) and minimum in S7OS1 and S7OS2 (0.02 Gg/total area (ha)/month) and S7OS1 (0.02 Gg/total area (ha)/month). SOC has shown positive and significant correlation with avl. N, silt, MWD, negative and significant with BD, sand, positive but no significant with clay.EnglishCarbon sequestrationCarbon mappingThesis