Conclusion
Carbon sequestration varies among forest types and ages of forest and carbon sequestration potential relies on tree size class.
Tropical rain forest has the highest potential for carbon sequestration and followed by dry evergreen forest and mixed deciduous forest.
Tree sizes in mixed deciduous forest at > 40 – 60 cm has trend of carbon sequestrationpotential more than other size classes, while size classes at > 20 – 40 and > 40 – 60 cm in dry evergreen forest and tropical rain forest has more carbon sequestration potential than other size classes. This evidence indicates the potential for growth to reach the climax stage of succession in the near future. These smaller trees do not have the highest carbon sequestration potential but they are relevant in terms of their future potential to grow up.
With high carbon sequestration potential in Thong Pha Phum National Forest, the Ministry of Natural Resources and Environmental must urgently consider to strictly protect and conserve these forests for sequestering atmospheric CO2, which can increase the carbon sink in natural forest. So, Thailand can contribute to reducing the problem of
greenhouse effects regarding global warming and climate changes.
The problem in this study was that the available data on carbon sequestration in tropical forests were extremely limited and incomplete. In some cases, inappropriate field measurements may have been taken.
As a result forest biomass may be significantly under - or overestimated. To resolve these uncertainties will require both improved practices with current field methods and new techniques for measuring processes to understand the carbon dynamics of the world’s forests.