IMPACT4SOIL OpenAire Research@WUR UnpayWall ZENODO IRIS Cnr Institutional Repository Universiteit Antwerpen Publikationenserver der Georg-August-Universität Göttingen Crossref Microsoft Academic Graph CNR ExploRA Europe PubMed Central Tree Physiology Open Access 2012-01-20 2024-02-18 A high-density plantation of three genotypes of Populus was exposed to an elevated concentration of carbon dioxide ([CO(2)]; 550 micromol mol(-1)) from planting through canopy closure using a free-air CO(2) enrichment (FACE) technique. The FACE treatment stimulated gross primary productivity by 22 and 11% in the second and third years, respectively. Partitioning of extra carbon (C) among C pools of different turnover rates is of critical interest; thus, we calculated net ecosystem productivity (NEP) to determine whether elevated atmospheric [CO(2)] will enhance net plantation C storage capacity. Free-air CO(2) enrichment increased net primary productivity (NPP) of all genotypes by 21% in the second year and by 26% in the third year, mainly because of an increase in the size of C pools with relatively slow turnover rates (i.e., wood). In all genotypes in the FACE treatment, more new soil C was added to the total soil C pool compared with the control treatment. However, more old soil C loss was observed in the FACE treatment compared with the control treatment, possibly due to a priming effect from newly incorporated root litter. FACE did not significantly increase NEP, probably as a result of this priming effect. 0106 biological sciences microbial biomass turnover dynamics populus temperature response functions 04 agricultural and veterinary sciences Carbon Dioxide 15. Life on land Plant Roots 01 natural sciences Trees dioxide enrichment forest Soil Populus limited photosynthesis soil organic-matter 0401 agriculture, forestry, and fisheries CO2 Biomass elevated atmospheric co2 Gielen, B., Calfapietra, C., Lukac, M., Wittig, V.E., de Angelis, P., Janssens, I.A., Moscatelli, M.C., Grego, S., Cotrufo, M.F., Godbold, D., Hoosbeek, M.R., Long, S., Miglietta, F., Polle, A., Bernacchi, C., Davey, P.A., Ceulemans, R., Scarascia-Mugnozza, G., 2005-11-01 journalpaper A high-density plantation of three genotypes of Populus was exposed to an elevated concentration of carbon dioxide ([CO(2)]; 550 micromol mol(-1)) from planting through canopy closure using a free-air CO(2) enrichment (FACE) technique. The FACE treatment stimulated gross primary productivity by 22 and 11% in the second and third years, respectively. Partitioning of extra carbon (C) among C pools of different turnover rates is of critical interest; thus, we calculated net ecosystem productivity (NEP) to determine whether elevated atmospheric [CO(2)] will enhance net plantation C storage capacity. Free-air CO(2) enrichment increased net primary productivity (NPP) of all genotypes by 21% in the second year and by 26% in the third year, mainly because of an increase in the size of C pools with relatively slow turnover rates (i.e., wood). In all genotypes in the FACE treatment, more new soil C was added to the total soil C pool compared with the control treatment. However, more old soil C loss was observed in the FACE treatment compared with the control treatment, possibly due to a priming effect from newly incorporated root litter. FACE did not significantly increase NEP, probably as a result of this priming effect. Net Carbon Storage In A Poplar Plantation (Popface) After Three Years Of Free-Air Co2 Enrichment 10.1093/treephys/25.11.1399 https://doi.org/10.1093/treephys/25.11.1399