Felipe Bravo
Professor of Forest Planning at the University Institute of Sustainable Forest Management, University of Valladolid
I can think of several better options for using wood as a carbon pool. For example, massive use in construction and the consequent substitution of more expensive materials in terms of CO2 emissions.
The authors do not introduce in their calculations the scale of felling that would have to take place, with the associated emissions - not only from the operations, but also from the leftovers that would be generated. No mention is made of how the felling would be done, nor of the potential effect on biodiversity, climate regulation or erosion control, to cite just a few examples.
The paper starts from a single observation and does not take into account centuries of accumulated experience and decades of experimentation in forest science and engineering. The leap from a single observation to a global plan to bury trees in order to increase carbon sequestration seems risky, to say the least.
The problem of climate change is complex and requires complex and complementary solutions. There is no one-size-fits-all solution. Socio-ecological conditions must be carefully studied before proposing a massive implementation of a single solution.
Encouraging forest conservation and sustainable forest management, and promoting the use of materials that not only generate low emissions but also contribute to long-term CO2 sequestration are the most appropriate ideas, and the ones most supported by science, to contribute to climate change mitigation. At the same time, these actions will allow forests to be managed in a way that facilitates their adaptation to the new conditions that climate change is bringing about.