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Báo cáo lâm nghiệp: "Growth of a poplar short rotation coppice under elevated atmospheric CO2 concentrations (EUROFACE) depends on fertilization and species"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài:Growth of a poplar short rotation coppice under elevated atmospheric CO2 concentrations (EUROFACE) depends on fertilization and species. | Ann. For. Sci. 61 2004 299-307 INRA EDP Sciences 2004 DOI 10.1051 forest 2004023 299 Original article Growth of a poplar short rotation coppice under elevated atmospheric CO2 concentrations EUROFACE depends on fertilization and species Marion LIBERLOOa Birgit GIELENa Carlo CALFAPIETRAb Caroline VEYSa Rossella PIGLIACELLIb Guiseppe SCARASCIA-MUGNOZZAb Reinhart CEULEMANSa a University of Antwerpen Campus Drie Eiken Department of Biology Universiteitsplein 1 2610 Wilrijk Belgium b Università degli Studi della Tuscia Department of Forest Environment and Resources DISAFRI Via S. Camillo de Lellis 01100 Viterbo Italy Received 24 February 2003 accepted 3 September 2003 Abstract - Growth and woody biomass production of three Populus species P. nigra L. clone Jean Pourtet P. alba L. clone 2AS-11 and P. X euramericana clone I-214 were followed during the first growing season after coppice of a short rotation coppice culture exposed to elevated atmospheric CO2 concentrations by means of Free-Air Carbon dioxide Enrichment FACE and to a nitrogen N fertilization treatment. FACE significantly increased the number of shoots per stool but did not significantly increase height nor total basal area per stool. In September FACE significantly increased the Leaf Area Index LAI with 5.5 to 16.4 depending on species. FACE significantly stimulated the woody biomass production by up to 25 but the stimulation of P. alba and P. X euramericana was restricted to the fertilized treatment. Significant differences between species were observed. We concluded that coppice diminished the FACE effect that the positive FACE effect was restricted under lower soil fertility and that species differed in their response to FACE. free-air carbon dioxide enrichment N-fertilization short rotation coppice culture Populus growth Résumé - La croissance de taillis de peuplier à courte rotation dans une atmosphere à concentration en CO2 élevée depend de la fertilisation et de l espece. La croissance et la .