Objectif THE BIOLOGICAL AND PHYSICAL DETERMINANTS LEADING TO A HIGH PRIMARY PRODUCTIVITY IN SHORT ROTATION INTENSIVE CULTURE SYSTEM (SRIC), BEING IDENTIFIED FOR EACH OF THE POPLAR TEST CLONE SHOULD NOW PROVIDE THE FUNDAMENTAL BASIS FOR THE CLONE-SPECIFIC PHOTOSYNTHETIC POTENTIAL AND ENERGY CONVERSION EFFICIENCY. A MATHEMATICAL DESCRIPTION OF EACH CLONE DEPENDENT PRODUCTION SYSTEM WILL BE TRIED IN TERMS OF FUNDAMENTAL SYSTEM PROCESSES AND SYSTEM STRUCTURE ANALYZED IN THIS STUDY. MODEL SENSITIVITY ANALYSES SHOULD THEN YIELD THE DOMINANT GUIDELINES FOR CLONE SELECTION CRITERIA IN VIEW OF OBTAINING HIGH BIOMASS PRODUCTIVITY. Dry mass productivity of 5 poplar clones (2 Populus (P) trichocarpa, 1 P x euramericana and 2 P trichocarpa x P deltoides), grown under intensive culture and high plantation density, was related to leaf area index and duration, solar radiation extinction coefficient and conversion efficiency. Significant clonal differences in photosynthetic capacity, leaf orientation, leaf area index and duration, extinction coefficient and above ground dry mass production were observed. Accumulated stem dry mass was linearly related to accumulated intercepted solar radiation in all 5 clones. Seasonal average conversion efficiencies for total above ground dry mass (stem, branches, leaves) were 0.72 g/MJ for euramerican clone Robusta and 1.10 g/MJ for interamerican clone Beaupre. Clone Beaupre also had highest leaf area index and duration, highest photosynthetic capacity and lowest solar radiation extinction coefficient.THE OBJECTIVES OF THIS PROJECT ARE THE IDENTIFICATION AND ANALYSIS OF FUNDAMENTAL DETERMINANTS LEADING TO A HIGH PRIMARY PRODUCTIVITY ON A SHORT TIME PERIOD AND THIS AT DIFFERENT ORGANIZATIONAL LEVELS OF THE VEGETATIVE PRODUCTION SYSTEM. STUDIES WILL BE MADE AT THE LEAF LEVEL TO DETERMINE THE BIOLOGICAL (GAS EXCHANGE) AND ARCHITECTURAL (STRUCTURAL) DETERMINANTS AND AT THE PLANT CANOPY LEVEL (BIOMASS ACCUMULATION) TO EVALUATE CARBON ALLOCATION PATTERNS. SHORT ROTATION, HIGH DENSITY (0.8 X 0.8 M) EXPERIMENTAL PLOTS WITH 5 POPLAR CLONES WILL BE ESTABLISHED AT GENT (BELGIUM), ORSAY AND MONTPELLIER (FRANCE) TO STUDY THE BIOLOGICAL PRODUCTION POTENTIAL AND THE EXTERNAL CONSTRAINTS UNDER A RANGE OF ENVIRONMENTAL CONDITIONS. EXPERIMENTS (BELGIUM, G.B. FRANCE) UNDER CONTROLLED CONDITIONS WILL BE AN ADDITIONAL SOURCE OF INFORMATION. DATA OBTAINED WILL LEAD TO A MATHEMATICAL DESCRIPTION OF A CLONE SPECIFIC BIOMASS PRODUCTION SYSTEM. SENSITIVITY ANALYSIS SHOULD YIELD DOMINANT GUIDELINES FOR CLONE SELECTION CRITERIA. Champ scientifique sciences naturellessciences de la Terre et sciences connexes de l'environnementsciences de l'atmosphèremétéorologierayonnement solairesciences socialeséconomie et affaireséconomieéconomie de la productionproductivitésciences agricolesbiotechnologie agricolebiomasseingénierie et technologiegénie de l'environnementénergie et combustiblesconversion de l'énergie Programme(s) FP1-ENNONUC 3C - Research and development programme (EEC) in the field of Non-Nuclear Energy, 1985-1988 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur UNIVERSITAIRE INSTELLING ANTWERPEN - UNIVERSITEIT ANTWERPEN Adresse Universiteitsplein 1 2610 Wilrijk (antwerpen) Belgique Voir sur la carte Contribution de l’UE Aucune donnée Participants (3) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire ECOLOGIE VEGETALE France Contribution de l’UE € 0,00 Adresse Universite paris-sud Paris Voir sur la carte Autres sources de financement Aucune donnée LAB. PLANTECOLOGY Belgique Contribution de l’UE € 0,00 Adresse R.u. gent Voir sur la carte Autres sources de financement Aucune donnée UNIVERSITY OF EDINBURGH Royaume-Uni Contribution de l’UE € 0,00 Adresse Edinburgh Voir sur la carte Autres sources de financement Aucune donnée
