Wood is not regarded as a carbon-emitting energy source when burned because the carbon emissions are already accounted for when carbon is emitted into the atmosphere during the wood cutting process.
Furthermore, trees absorb the carbon in the air, which helps offset carbon emissions. (IPCC Guideline)
The UNFCCC and IPCC recognize wood as a carbon neutral fuel and recommend wood as a renewable energy to substitute fossil fuel.
Forest biomass fuel is eco-friendly renewable energy that can substitute fossil fuel because it has little effect on climate change and it is a carbon neutral energy.
Fossil fuels increase carbon emissions due to the release of carbon dioxide when burned.