Báo cáo lâm nghiệp:"Intra- and interspecific variations of polycyclism in young trees of Cedrus atlantica (Endl.) Manetti ex. Carrière and Cedrus libani A. Rich (Pinaceae)" pot

... species across seasons. Our effort was focused on understanding the mechanisms that explain variance in lepidopteran communities in various seasonal guilds on different oaks. e main study goal ... the main life-history traits of lepidopteran larvae and other parameters that may explain species variance in seasonal guilds on different oak species via clus...

Ngày tải lên: 07/08/2014, 10:21

... significant increment of the growth rate of terminal branches at the high site in recent years. erefore, data obtained from sites at the upper forest limit are valuable in assessing the climate changes ... to determine the number of specimens originating generatively in extensive polycormons. Fig. 4. Mean annual linear increment of terminal branches in Pinus pu...

Ngày tải lên: 07/08/2014, 10:21

... verified in future studies. The mean wood density of a ring is a composite of several intra-ring components, including wood density of early- and latewood and width of early- and latewood, that ... cumulated ring properties of poplar hybrids: (a) ring width and mean wood density, (b) ring width and minimum wood density, (c) ring width and maximum wo...

Ngày tải lên: 07/08/2014, 16:20

... explains intra-tree-ring wood density change, and (2) sorting out tracheid anatomical characteristics in order of im- portance. The work was carried out with Douglas fir (Pseudotsuga menziesii (Mirb.) ... between wood den- sity and tracheid characteristics along a tree-ring, i.e. on intra- tree-ring variations. However, it is also interesting from these...

Ngày tải lên: 07/08/2014, 16:20

... were higher in the inland area than in the coastal area (Tab. I). Val- ues of mean sensitivity and standard deviation were higher for latewood than for earlywood and tree-ring width at each area. In both ... temper- ature in August had a negative effect on latewood formation, in the coastal and inland area. Climatic significance of IADFs in Pinus pinea 233 Fig...

Ngày tải lên: 07/08/2014, 16:20

... NC: SAS Institute Inc, 2004. [48] SAS Institute Inc., SAS/ETS  9.1.2. User’s Guide, Cary, NC: SAS Institute Inc., 2004. [49] SAS Institute Inc., SAS OnlineDoc  9.1.2, Cary, NC: SAS Institute Inc., ... For. Sci. 64 (2007) 511–520 Available online at: c  INRA, EDP Sciences, 2007 www.afs-journal.org DOI: 10.1051/forest:2007028 Original article Merchantable volume system for pedunculat...

Ngày tải lên: 07/08/2014, 16:21

... 1929 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest: 2002070 Original article Intra- and interspecific variations of polycyclism in young trees of Cedrus atlantica (Endl.) Manetti ex. Carrière and ... variability Résumé – Variations intra- et interspecifiques du polycyclisme chez de jeunes arbres de Cedrus atlantica (Endl.) Manetti ex. Carrière...

Ngày tải lên: 08/08/2014, 01:21

... with Average Ring Density, Minimum Density, Earlywood Density and Latewood Percentage. tree breeding / genetic correlations / wood quality / wood density components / Pinus pinaster Résumé – Corrélations ... For. Sci. 60 (2003) 285294 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003020 Original article Genetic correlations between wood density components in P...

Ngày tải lên: 08/08/2014, 01:21

... article Below-ground resources limit seedling growth in forest understories but do not alter biomass distribution José-Luis MACHADO a,b *, Michael B. WALTERS a,c and Peter B. REICH a a Department of Forest Resources, ... of seedlings of five conifer species varying widely in shade tolerance to an increase in soil resources in shaded forest understories...

Ngày tải lên: 08/08/2014, 01:21

... article Aboveground biomass relationships for beech (Fagus m oesiaca Cz.) trees in Vermio Mountain, Northern Greece, and generalised equations for Fagus sp. Dimitris ZIANIS*, Maurizio MENCUCCINI Institute ... to develop biomass equations for beech (Fagus moesiaca Cz.) trees growing in Vermio Mountain, Northern Greece. Some prelimi...

Ngày tải lên: 08/08/2014, 01:21

... (Kaminaka, personal communication). These data were obtained from a similarly aged (ca. 50 years) Castan- opsis cuspidata stand near the study site. This adjacent stand has almost same average ... litterfall after typhoon disturbance. Because disturbance- generated input can have a significant Table III. Comparison data of other Castanopsis forests in Japan. Locality Total li...

Ngày tải lên: 08/08/2014, 01:21

... EDP Sciences, 2004 DOI: 10.1051/forest:2004037 Original article A two-step mortality model for even-aged stands of Pinus radiata D. Don in Galicia (Northwestern Spain) Juan Gabriel ÁLVAREZ GONZÁLEZ a *, ... develop a two-step mor- tality model for even-aged stands of Pinus radiata including competition-induced mortality (regular mortality) and...

Ngày tải lên: 08/08/2014, 01:21

... of May on a sample of ten control and 15 thinned trees from each plot Original article Intra- and interannual variations of transpiration, leaf area index and radial growth ... of transpiration were successively analysed as a consequence of i) seasonal and annual variations in leaf area index and ii) soil water balance. F...

Ngày tải lên: 08/08/2014, 18:21

... (1968) Variations saisonnières des teneurs en eau et éléments minéraux des feuilles de chêne (Quercus pedunculata). Ann Sci For 25, 83-117 Le Tacon F, Toutain F (1973) Variations ... stationnelles des teneurs en éléments minéraux des feuilles en Kroumirie (Tunisie) B Hasnaoui, G Bonin* S Garzino Laboratoire de biosystématique et...

Ngày tải lên: 08/08/2014, 18:21

... y0 w0 h18" alt="" Possibilités d’infestation par les pucerons : Cedrobium laportei Remaudière, Cinara cedri Mimeur (Homoptera, Lachnidae), chez le genre Cedrus J.P. FABRE e de A. ... note apporte des précisions sur les possibilités d’infestation par deux pucerons : Cedrobium laportei Remaudière, Cinara cedri Mimeur, sur...

Ngày tải lên: 09/08/2014, 02:20