Spatio-temporal dynamics of soil organic carbon and total nitrogen: evidenced from 2000 to 2020 in a mixed ecosystem

The southwestern part of Bangladesh has a mixed ecosystem, which is directly affected by climate change and undergoing remarkable changes in agricultural activities that are exacerbating the dynamics soil organic carbon (SOC) total nitrogen (STN). To study spatial distribution SOC STN such Dacope Upazila was chosen, different interpolation methods were applied compared to find out best approach demonstrate pattern status 2000 2020 correlated them with terrain environmental variables. Soil resource development institute (SRDI) database used obtain area 2020. identify elevation, aspect, slope, land surface temperature (LST), normalized difference vegetation index (NDVI), water (NDWI), digital elevation model (DEM) satellite images downloaded. results showed models did not perform well as efficiency (R2) very low. Furthermore, 2000, only positively EC (p < 0.01) whereas after two decades, positive correlation 0.01), NDVI negative NDWI 0.01). In both years, strong at p 0.001 each other. Due poor performance, it recommended using extended techniques coupling variables increase accuracy for complex ecosystem.