Our Atmosphere is saturated with excess Carbon Dioxide which is two molecules of Oxygen locked in a bond with one molecule of Carbon. Vegetation grows by inhaling Carbon Dioxide and chemically divides the molecules into the source elements using Carbon for growth, while exhaling the Oxygen. In this way a tree will isolate the Carbon from our Air and store it for safe keeping it its new cell growth. 30% of the captured Carbon will be exchanged with mycelium & soil organism for more nutrients. As trees age the rate of Carbon absorption exponentially increases, therefore older trees are constantly sequestering more Carbon than any younger tree can each year while it continues to live. Once trees die they are no longer able to inhale any more Carbon Dioxide. Dead trees & vegetation (BioMass) may continue to provide habitats as they decay. However fast or slow decay transpires the result will be the same, what ever Carbon the living plant was able to sequester into its body is not permanent & will begin to release that Carbon as Carbon Dioxide and Methane until the BioMass evaporates. When trees are harvested for lumber the trunk has left 30% of the total Carbon inhaled in the ground, within healthy soils that carbon can stay circulating amongst soil organisms and new vegetation development for years/decades as part of the natural Carbon cycle. The fallen tree will then be limbed (branches cut off) in the forest and poles sent to be milled. The slash and tree limbs (BioMass) if left on the forest floor would be a fire hazard, however if that slash is converted into BioChar & left in the forest soils that would be a stable permanent sequestered Carbon which would further improve the forest soil health for millennia. The part of the tree that manages to make it all the way to be used as lumber is also sequestered Carbon and so long as the houses and furniture made from Wood don’t burn down or decay the Carbon stays sequestered. Supporting wood use is a positive form of sequestering Carbon. Converting any unused or decaying wood into BioChar and incorporating into soil will keep the Carbon from being able to return to the Air making it the most stable permanent form of Carbon sequestration we know of.