Letteratura scientifica selezionata sul tema "Plantations mélangées"
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Articoli di riviste sul tema "Plantations mélangées":
Thomas, Anaïs, Nicolas Marron, Erwin Dallé e Pierrick Priault. "Phénologie des bourgeons de l’Aulne et du Peuplier en plantations mélangées forestière et agroforestière". Revue forestière française 74, n. 3 (11 settembre 2023): 335–46. http://dx.doi.org/10.20870/revforfr.2023.7685.
Thiffault, Nelson, Patricia Raymond, Jean-Martin Lussier, Isabelle Aubin, Samuel Royer-Tardif, Anthony W. D’Amato, Frédérik Doyon et al. "Sylviculture d’adaptation aux changements climatiques : des concepts à la réalité Compte-rendu d’un colloque tenu au Carrefour Forêts 2019". Forestry Chronicle 97, n. 01 (gennaio 2021): 28–42. http://dx.doi.org/10.5558/tfc2021-005.
Valeria, Osvaldo. "CARTOGRAPHIE PAR TELEDETECTION DE L’EVOLUTION DES PLANTATIONS RESINEUSES DANS L’EST DE LA FORÊT BOREALE CANADIENNE". Revue Française de Photogrammétrie et de Télédétection 1, n. 211-212 (6 dicembre 2015): 33–42. http://dx.doi.org/10.52638/rfpt.2015.539.
GUIBERT (M.) e GENERE (Benoît). "Evaluation en jeunes plantations de lots mélangés de chênes sessile (Quercus petraea) et pédonculé (Quercus robur)." Revue Forestière Française, n. 4 (2000): 303. http://dx.doi.org/10.4267/2042/5364.
Marien, Jean-Noël, e Guillaume Delaunay. "La tara, Caesalpinia spinosa : espèce agroforestière emblématique des vallées interandines au Pérou". BOIS & FORETS DES TROPIQUES 304, n. 304 (1 giugno 2010): 25. http://dx.doi.org/10.19182/bft2010.304.a20443.
Ferradous, Abderrahim, e Mohamed Hafidi. "Production de plants d’arganier (Argania spinosa) au Maroc : choix du conteneur et du substrat". BOIS & FORETS DES TROPIQUES 334 (2 gennaio 2018): 37. http://dx.doi.org/10.19182/bft2017.334.a31490.
Nassy, Marielle Laurentine Moita, Stefan Hauser, Maria Egwekhide, Komlan Batawila, Peter Kulakow e Michael Abberton. "Leaf and roots yields responses of three improved cassava (Manihot esculenta Crantz) varieties to organo-mineral fertilizers and leaf harvest in the South-West Nigeria". International Journal of Biological and Chemical Sciences 14, n. 4 (17 agosto 2020): 1432–47. http://dx.doi.org/10.4314/ijbcs.v14i4.21.
NEBOUT, Jean-Paul. "Á propos des plantations mélangées de Chêne sessile, Pin laricio de Corse et Pin sylvestre". Revue Forestière Française, n. 2 (2008). http://dx.doi.org/10.4267/2042/18152.
Artous, Mathieu, René Guénon, Olivier Lemmel, Hervé Buord, Laure Vidal Beaudet e Patrice Cannavo. "CONSTRUCTION OF FERTILE GROWING MEDIA FROM RECYCLED POLYURETHANE FOAM". Environnement, Ingénierie & Développement Unlabeled volume (1 marzo 2022). http://dx.doi.org/10.46298/eid.2022.8505.
BECQUEY, Jacques. "Pour alléger le suivi des plantations : le mélange avec des essences secondaires". Revue Forestière Française, n. 2 (2008). http://dx.doi.org/10.4267/2042/18153.
Tesi sul tema "Plantations mélangées":
Thomas, Anaïs. "Interactions entre espèces en plantations mélangées forestières et agroforestières". Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0079.
Plantations of fast-growing species (e.g. poplars, willows, eucalyptus) are widely used for biomass supply. However, these plantations are often monospecific systems and are generally very resource demanding. This is particularly the case for plantations of species belonging to the Populus genus, which can be grown under intensive cultivation conditions, and which use large quantities of water and nitrogen to produce large volumes of biomass. In this context, mixed forest or agroforestry plantations appear as an interesting alternative to monocultures. Indeed, they can produce more by using more efficiently the resources necessary for the growth of the different components of the mixture by playing on the complementarity between the species. The introduction of nitrogen-fixing species in these mixtures can also be an additional asset to reduce the need for synthetic nitrogen inputs.In any plantation, forest or agroforestry, intraspecific interactions (individuals of the same species) or interspecific interactions (between individuals of two different species) can be negative, positive, or neutral. To date, the interactions between species that determine whether a given mixture will be more productive than the corresponding monocultures are still poorly understood and studies of their impact on resource-use efficiency are scarce. The overall objective of the PhD work was to evaluate the impact of several species mixtures, both forest and agroforestry, on tree growth performance through effects on functional (resource-use efficiencies), structural (crown architecture) and phenological (spring and fall bud and leaf phenology) determinants. The main hypothesis was that thanks to symbiotic nitrogen fixation and complementarity between species, trees in mixtures would be more productive and use resources more efficiently than in monoculture.This objective was pursued on an instrumented plantation on the La Bouzule site (54), installed in spring 2014, composed of mixtures of woody (poplars and alders) and herbaceous (legumes, graminoids) species, as well as their respective monocultures. The functioning of three types of mixtures including nitrogen-fixing species (poplars/alfalfa - clover succession; poplars/alders; alders/cereal - temporary grassland succession) was compared with monocultures of the two woody species. The originality of the work lies on the combination of the study of processes occurring at the organ and tree scales to describe the interaction processes between species and the overall performance of the different types of mixtures, compared to their respective monocultures.Species interactions in a plantation are not static but change as the stand develops. The nature of the interactions between poplars and legumes in the agroforestry plot evolved from a predominant competition at the beginning of the plantation to facilitation through soil nitrogen enrichment. The growth performances of the poplars were increased compared to the monoculture, associated with a higher water-use efficiency than in monoculture and a reduction of competition between the canopies allowing a better interception of light in agroforestry. In contrast, higher water-use efficiency of poplars associated with alder than in monoculture was not associated with better growth performances of both species compared to their respective monocultures. Overall, alder was only slightly affected by the mixtures
Gana, Cécilia. "Croissance, production et acquisition de l'azote chez le peuplier et le robinier en plantations à courte rotation monospécifiques et mélangées". Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0010/document.
Biomass from short rotation coppice (SRC) plantations may help reducing fossil fuel consumption. The development of mixed-species plantations, introducing a nitrogen-fixing species could be a solution to reduce the risk of fertility decline in SRC. Nevertheless, the success or failure of the mixture will depend on the competition and complementarity processes, for light and soil resources (water and nutrients), between both species. The objectives of this study were to determine the impact of a mixture of poplar and black locust, on growth, biomass production and nitrogen uptake in the plantation. Instrumented monocultures and mixed plantations of both species have been studied during four years. Repeated above-and belowground biomass estimations associated with tree dimension monitoring have shown that the presence of black locust affected neither growth, nor biomass production and allocation of poplar trees both at tree and plot level. On the other hand, the black locusts trees suffered from interspecific competition: high mortality, decrease in growth and biomass production. Moreover, an isotopic approach (15N) coupled with mineralomass analyses allowed to highlight that nitrogen concentration in black locust trees in the mixture was lower than in the monoculture due to a reduction of the percentage of nitrogen derived from atmospheric fixation. The total nitrogen contents were close in the mixture and in the monocultures of each species. No advantage of the mixture was found during the study period because of inappropriate pedoclimatic conditions (especially for the black locust) and incompatibility between both species on this site