A carbon inventory is a systematic assessment of the amount of carbon stored in various ecosystems, such as forests, wetlands, and soil. This research area involves measuring and quantifying the carbon stored in different components of an ecosystem, as well as understanding the factors that influence carbon storage and fluxes. Carbon inventories are important for tracking changes in carbon stocks over time, assessing the impact of land use and management practices on carbon sequestration, and informing climate change mitigation strategies. Research in this area often involves field measurements, remote sensing techniques, and modeling approaches to estimate and monitor carbon stocks and fluxes in ecosystems.