Báo cáo lâm nghiệp: "Coloration macroscopique, retraits longitudinaux de maturation et de séchage du bois de tension du peuplier (Populus x euramericana cv I.214)" pps

Ngày tải lên: 07/08/2014, 03:22

... OF FOREST SCIENCE, 53, 2007 (Special Issue): 3–10 Composition of psocid taxocenoses (Insecta: Psocoptera) in Fageti -Piceeta s. lat. and Piceeta s. lat. forests in the Western Carpathian Mts. O. ... Fageti -Piceeta s. lat. and the 8 th – Piceeta s. lat. ese AVZ occur in the study area in the Moravskoslezské Beskydy Mts. in...

Ngày tải lên: 07/08/2014, 03:22

... 17°58'46.72''E, 460 m a.s.l.; Flight activity of Anthribus nebulosus Forster, 1770 (Coleoptera: Anthribidae) and notes to its life history J. H 1,2 , M. T 3 1 Forestry and Game Management Research ... consump- tion, mating behavior, and shelter selection of Anthribus nebulosus Forster (Coleoptera: Anthribidae), an introduce...

Ngày tải lên: 07/08/2014, 03:22

... relation between the extent of the damage and the individual characteristics of the experimental plots. e relation between the extent of the damage and the method of estab- lishment of the stands ... explored the ecological conditions, which influence the female Melolontha hippocastani F. in their selection of the locality for laying eggs. In the regio...

Ngày tải lên: 07/08/2014, 03:22

... inoculation of Ips typographus (L., 1758) to spruce trees under various levels of water stress M. T, O. N Faculty of Forestry and Wood Sciences, Czech University of Life Sciences ... Republic ABSTRACT: Manipulated experiments with males of Ips typographus (L., 1758) were conducted in spruce stands in north-western Slovakia. Some...

Ngày tải lên: 07/08/2014, 03:22

... of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae) M. T 1 , J. V 2 1 Faculty of Forestry and Wood Sciences, ... Slovakia ABSTRACT: Irradiation experiments on Ips typographus (L., 1758) with doses of 15 and 30 Gy (cobalt 60) were con- ducted in 2006. e effect...

Ngày tải lên: 07/08/2014, 03:22

... 38–44 Spatio-temporal patterns of the Norway spruce decline in the Beskid Śląski and Żywiecki (Western Carpathians) in southern Poland W. G Department of Forest Management in Mountain Regions, ... northern part of Beskidy Mts. was as- sessed as poor, and improving southward – the best was in the southern parts of Beskid Żywiecki....

Ngày tải lên: 07/08/2014, 03:22

... traps give information influenced by mi- gration of beetles. CONCLUSIONS I. typographus remained dominant species on the majority of sites having high intensity of tree infes- tation mainly along ... understanding of bark beetles spatial distribution. It may be used for practical forest protection only as preliminary information. No environmental factor controlling observed...

Ngày tải lên: 07/08/2014, 03:22

... intensity of Melampsora larici-populina occurrence and the value of growth traits and biomass yield in Populus nigra  e correlation between the growth traits of stem diameter and plant height and ... some clones (clones 7 and 107) no yield decline was observed at all or it ranged only from 6% to 9% (clones 49 and 152). It is to note that clone 107...

Ngày tải lên: 07/08/2014, 10:21

... identification of poplar accessions and the determination of genetic relation- ships between these accessions at the DNA level. This paper explores the potential of adopting AFLP and ISSR for high throughput ... identification of large numbers of poplar accessions and for the determination of their genetic relationships. Although it is sometimes more d...

Ngày tải lên: 07/08/2014, 16:20

... additivité des pertes de masse, des études sur du hêtre ont montré qu’environ 14.4 % de la perte de masse totale du bois en fin d’isotherme provien- drait des dégradations de l’holocellulose et 6 % des ... diffraction des rayons X et par des méthodes basées sur la polarisation du rayonnement infrarouge. Elle se présente sous la forme de microfibrilles de 2 à 6 nm...

Ngày tải lên: 08/08/2014, 00:22

... compte des effets âge et densité L’influence de l’âge et de la densité sur la relation hauteur-circonférence est appréciée par l’inter- médiaire des variations des différents ... en faveur d’un modèle unique quelle que soit la densité. Finalement, avec le modèle hyperbo- lique, on ne peut pas mettre en évidence d effet de la densité su...

Ngày tải lên: 08/08/2014, 18:21

... bandelettes. Un même cerne peut ainsi contenir à la fois des bandes de bois normal et des bandes de bois de tension (fig 5). Discussion La distribution du bois de tension ... maturation et de séchage du bois de tension du peuplier (Populus x euramericana cv I.214) V Grzeskowiak 1 F Sassus M Fournier 2 1 Laboratoire de...

Ngày tải lên: 08/08/2014, 18:21

... (France) Résumé Une méthode de lutte chimique contre le gui des feuillus (Viscum album album, BALL) a été envisagée à l’aide de deux herbicides phloème-mobiles (2,4-DB et glyphosate) ... vitesse de pénétration de l’herbicide à travers la cuticule (DPMlcm 2J s). Lutte chimique contre le gui (Viscum album L.). Pénétration,...

Ngày tải lên: 09/08/2014, 02:20

... des résultats d’inventaire, ou d’études prospectives ; on rejoint alors la question (3) de l’introduction. Inventaires successifs en forêt : intérêt théorique et limites pratiques ... dimension supplémentaire : le temps. Deux grandes méthodes ont été traditionnellement utilisées en forêt : . la comparaison d’inventaires successifs,...

Ngày tải lên: 09/08/2014, 06:21