Carbon Budget of Boreal Forests.
Lesson 3: Results
and Criteria to Use
7. ŅARBON IN PINE STAND,
DETRITUS (SOILS) AND PRODUCTS
OVER 3 ROTATIONS


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Carbon in pine stand, detritus (soils) and products over 3 rotations

- Carbon sequestration by the pine stands of class I site starts from its planting or natural regeneration and by the time of harvesting reaches 66 tC ha-1. After clear cutting of the forest, 3 tC ha-1 remains in the forest floor, detritus and shrubs. Over the next 80 years the ecosystem continues to sequester carbon upto the previous level, followed by the next harvesting. Therefore the maximum amount of carbon in pine stands is observed at the time of harvesting (end of rotation).
- During harvesting, part of the wood remains as felling residues that enlarge the pool of woody detritus. In Fig. b this can be seen by the increased storage of carbon in the pool of the woody detritus and soils. In the next 10 years this pool decreases during the decay process of the woody detritus. With the next rotation of pine stand the pool continues to increase as well. Harvested wood is transformed into different products, which continue to retain carbon (Fig c). The pool of wood-based products has maximum carbon in the year of harvesting. After 100 years use only about 10% of carbon remains bound in these long term products.
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