Measuring all carbon stock changes caused by forest degradation within a country at the same level of detail and accuracy will likely not be efficient. In particular the considerations of IPCC source category analysis, and the fact that many degradation activities are focused on specific areas within the country help to make the monitoring more targeted and efficient to capture the most important components with priority.
To estimate forest degradation, countries need to assess carbon stock changes and the total area undergoing degradation, ideally for different types of degradation (i.e. fire, logging, and fuel wood harvesting). The assessment of changes in carbon stocks requires consistent ground data while the evaluation of the total area undergoing degradation is more reliably measured through remote sensing for the major degradation processes, in particular for developing countries. The particular problem of measuring forest degradation is the lack of field based forest data for developing countries.