Báo cáo lâm nghiệp: "Quercus canariensis Willd : variations saisonnières et stationnelles des teneurs en éléments minéraux des feuilles en Kroumirie (Tunisie)" potx

... Comparison of general tree characteristics of less known oak species Quercus dalechampii Ten. and Quercus polycarpa Schur R. M Faculty of Forestry and Wood Technology, Mendel University of Agriculture ... Average total height of measured trees of both studied species Fig. 2. Average height of the live crown base of both studied species Q....

Ngày tải lên: 07/08/2014, 03:22

... weeks and live plants were found even after 14 weeks (R, B 2002). Under the aforementioned conditions Germination of acorns and development of oak seedlings (Quercus robur L.) following ... flooded areas of North American ripa- rian forests (upland oaks) have a higher sensitivity to flood than the oak species of the actual floodplains (bottomland oak...

Ngày tải lên: 07/08/2014, 03:22

... colo- nization and plant growth due to the interchange of carbon, phosphate and nitrogen between the host fungi and bacteria. According to B-E-D and M (1998), the dual inoculation of AM and ... attack in the rhizosphere of A. catechu. On the basis of the results it can be concluded that the co- inoculation of Rhizobium sp. and Trichode...

Ngày tải lên: 07/08/2014, 04:20

... 929 c  INRA, EDP Sciences, 2006 DOI: 10.1051/forest:2006076 Original article Modelling dominant height growth and site index curves for rebollo oak (Quercus pyrenaica Willd.) Patricia A a * ,IsabelC  ˜  b , ... A dominant height growth model and a site index model were developed for rebollo oak (Quercus pyrenaica Willd.) in northwe...

Ngày tải lên: 07/08/2014, 16:20

... petraea Liebl.) site index variations in relation to climate, topography and soil in even-aged high-forest stands in northern France Laurent BERGÈS a *, Richard CHEVALIER a , Yann DUMAS a , Alain ... water and nutrient budgets in predicting site index variations The climate/water-related factors and nutrient-related fac- tors explained 0 to 25...

Ngày tải lên: 08/08/2014, 00:22

... distri- bution du chêne tauzin en Galice dépend principalement des caractéristiques topo-climatiques du terrain, alors que les caractéristiques édaphiques n’entrent pratiquement pas en jeu, étant ... médi- terran en du Quercus pyrenaica par rapport aux chênes atlan- tiques [2, 62]. 4.3. Habitat édaphique du Quercus pyrenaica en Galice Certaines variables édaphiques...

Ngày tải lên: 08/08/2014, 00:22

... 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

... Growth response of Q. pyrenaica to thinning 245 The results of Ducan’s test also explain the aforementioned different responses to thinning intensities in the two growth intervals (Tab. ... deviation (in bracket) absolute and relative stem diameter increment of Q. pyrenaica trees in unthinned and thinned treatments (C – light thinning; D – moderate thinning; E – heavy th...

Ngày tải lên: 08/08/2014, 01:22

... to environmental factors in two sites differing in their annual rainfall (Sierra de Gata, Spain) M Rico, HA Gallego, G Moreno, I Santa Regina Instituto de Recursos Naturales ... semi-empirical model of stom- atal conductance was used to improve understanding of the sensitivity to water deficit in deciduous oak species, in contr...

Ngày tải lên: 08/08/2014, 18:21

... 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

... 744 J-cm- 2 -d- 1 and sapflow = 0.8 mm ’ d- 1 (Fig. 2). Both Figs. 1 and 2 show an influence of net radiation on sapflow variations. With a daily time step, transpiration T is about equal ... and plotted against the vapor pressure deficit (VPD) (Fig. 3). The relationship is quite good and reveals an apparent limit to forest transpirati...

Ngày tải lên: 09/08/2014, 04:20

... composantes densitométriques et l’état de surface de planches rabotées chez Pseudotsuga menziesii G. NEPVEU A., Station de Re T. TRAN NGOC rches sur la Qualité /.PV.!.!4 Station de Recherches ... densitométriques spéciales de ce bois ; - il existe une variabilité individuelle significative pour la qualité des états de surface des pla...

Ngày tải lên: 09/08/2014, 06:21

... de 4 herbicides et d’un fongicide à large spectre sur la croissance et l’infectivité de souches pures de Frankia. 2. Matériel et méthodes 2.1. Produits phytosanitaires Utilisés 2.11. ... d’entreprendre une étude approfondie de l’influence de certains produits phytosanitaires (herbicides et fongicides) sur le développement in...

Ngày tải lên: 09/08/2014, 06:21

... x0 y0 w3 h17" alt="" Note technique Construction d’un pluviomètre original pour la collecte quantitative et qualitative des pluviolessivats D. GELHAYE, A. HURPEAU *, J.R. PERRIN ... La variation quantitative et qualitative des pluviolessivats en fonction de la distance du tronc est prise en compte grâce au cloisonnement du pluviomètr...

Ngày tải lên: 09/08/2014, 06:22