Carbon accumulation in the above-ground and root biomass of pine, birch and spruce cultivated in agricultural soils | Oglekļa akumulācija virszemes un sakņu biomasā priedes, egles un bērza stādījumos lauksaimniecības zemēs
2009
Daugaviete, M., Latvian State Forest Research Inst. Silava, Salaspils (Latvia) | Gaitnieks,T., Latvian State Forest Research Inst. Silava, Salaspils (Latvia) | Klavina, D., Latvian State Forest Research Inst. Silava, Salaspils (Latvia) | Teliseva, G., Latvian State Inst. of Wood Chemistry, Riga (Latvia)
Summarized are the data on carbon accumulation in the above-ground and root biomass of pine, spruce and birch cultivated in agricultural soils. For 12-year plantations of pine in nutrient-rich agricultural soils the average tree volume is from 0.0208 to 0.0232 m**3, with the number of trees 3,300 stems haE-1 reaching 62.4-69.6 m**3haE-1. For 12-year plantations of pine the above-ground biomass accumulated (DM-air dry mass) is from 43.7 to 47.6 thaE-1, the stump part, coarse roots and small and fine root biomass (DM) is from 17 to 18.9 thaE-1; the average amount of carbon accumulated is 33 thaE-1, with that accumulated in above ground biomass is – 65.4%, in stump part and coarse roots accumulated – 23%, but in small and fine roots – 11.6% of the total amount of carbon accumulated by the plantation. In different components of pine wood (DM) the carbon content is as follows: stemwood 51.86%, branchwood 51.48%; needles 51.42%; bark 51.90% and roots 50.99%. In spruce plantations in nutrient-rich agricultural soils the average tree volume is from 0.0125 to 0.0139m**3, with the number of trees 2,500 stems ha-1 reaching 41.3–46.1 m**3haE-1. For 12-year plantations of spruce the above-ground biomass (DM) accumulated is from 29.0 to 32.6 thaE-1; the stump part, coarse roots and small and fine root biomass (DM) is from 17.2 to 18.5 thaE-1, the average amount of carbon accumulated is 26.5 thaE-1, with that accumulated in above ground biomass is 66%, with that accumulated in stump part and coarse roots making 19%, but in small and fine roots – 15% of the total amount of carbon accumulated by the plantation. In different components of absolute dry spruce wood the carbon content is as follows: stemwood 49.89%; branchwood 50.51%; needles 50.15%; bark 49.81 % and roots 49.87%. For 10-year plantations of birch in nutrient-rich alluvial soils the average tree volume is 0.0173 to 0,0214 m**3, with the number of trees 2,500 stems ha E-1 reaching 43.3 to 53.5 m**3haE-1. For 10-year plantations of birch the above-ground biomass (DM) accumulated is from 38.6 to 46.4 thaE-1; the stump part, coarse roots and small and fine root biomass (DM) is from 10.4 to 12.3 thaE-1, the average amount of carbon accumulated is 30.1 thaE-1, with that accumulated in above ground biomass is 70%, with that accumulated in stump part and coarse roots making 16.6% , but in small and fine roots – 13.4% of the total amount of carbon accumulated by the plantation. In different components of absolute dry birch wood the carbon content is as follows: stemwood 50.23%, branchwood 49.89%, foliage 52.21%, bark 50.37%, and roots 49.70%.
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