Báo cáo lâm nghiệp: "Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming" doc

... moder in the unmixed spruce stand and mixed stands, mull-moder in the unmixed beech stand (according to N et al. 2001). The high accumulation of humus in H horizon in the mixed stand of ... floor occurs in the stand of larch with beech (52.6 t/ha) and the statistically lowest one in the unmixed beech stand (22.0 t/ha). e mixed s...

Ngày tải lên: 07/08/2014, 03:22

... conditions. SHORT COMMUNICATION Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming D. S 1 , R. J 1 , G. R 1 , ... in the fir volume and the increase in beech volume was collected. – However, the increasing share of beech, accompa - nied by a decrease...

Ngày tải lên: 07/08/2014, 03:22

... possibilities of using Norway spruce (Picea abies [L.] Karst.) in forest regeneration in the air-polluted region of the northeastern Krušné hory Mts. P. K, O. M Faculty of Forestry and ... parts of the stands) than in the Krušné hory Mts. (with underplanting realized inside the stands) was also a reason for the relative...

Ngày tải lên: 07/08/2014, 03:22

... to a gap was still lower after 30 days than in the leaves of plants left in the shade and in control seedlings growing in the gap. Photoinhibition in beech seedlings grown in the shade and ... weight and volume of shoots and root systems than seedlings grown in the shade. A higher number of leaves, larger total leaf area and higher dry matter...

Ngày tải lên: 07/08/2014, 10:21

... environmental indicators.  e aim of this study was to clarify to what extent the spatial variation of environment a ects growth and adaptive traits in a provenance trial, and whether blocking can ... genetic variation within populations and/ or environmental variation on very small scales. Analysis of covariance confi rmed the expected signifi cant provena...

Ngày tải lên: 07/08/2014, 10:21

... granite. Supported by the Ministry of Agriculture of the Czech Republic, Project No. MZe 0002070201. Growth and health state of silver fir (Abies alba Mill.) in the ridge area of the Jizerské hory Mts. V. ... dynamics of the height growth of the silver fir experimental plantings was evaluated on the basis of the results of the measu...

Ngày tải lên: 07/08/2014, 10:22

... insect populations in the context of this exceptional event. Observations of changes in population levels of the main European forest insect pests during and after the drought are presented and ... prolonged drought on bark beetles The success of the establishment of bark beetle populations on their host tree depends, on the level of the...

Ngày tải lên: 07/08/2014, 16:20

... 10.1051/forest:2006104 Original article Growth versus storage: responses of Mediterranean oak seedlings to changes in nutrient and water availabilities Virginia S P ´  a * , Pilar C  D ´  a , Fernando ... was to assess the combined response of growth, carbohydrate and nitrogen reserves of seedlings of three Mediterranean oaks (Quercus coc...

Ngày tải lên: 07/08/2014, 16:20

... 10.1051/forest:2007005 Original article Growth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: effect of different vegetation management ... biomass allocation and leaf carbon assimilation was investigated in two plantations (1- and 2-year-old) established in previously f...

Ngày tải lên: 07/08/2014, 16:20

... Available online at: c  INRA, EDP Sciences, 2007 www.afs-journal.org DOI: 10.1051/forest:2007021 Original article Effects of resource availability on condensed tannins and nitrogen in two Quercus species ... radiation), at two water regimes (500 and 800 mm) and with two nutrient availabilities (standard substrate and 7% increase in soil N). The concentratio...

Ngày tải lên: 07/08/2014, 16:21

... 763772 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2003071 Original article Chemical composition of the periderm in relation to in situ water absorption rates of oak, beech and spruce fine roots Christoph ... from the terminal root tip in all species. At 500 mm distance from the tip, periderm thickness had increased to 50 àm in beech and...

Ngày tải lên: 08/08/2014, 01:21

... efficiency and CO 2 compensation point associated with midday stomatal closure and mid- day depression of net CO 2 exchange of leaves of Quercus suber. Planta 1 62, 193 -20 3 Tenhunen ... patterns in forest stands of lobolly pine (Pinus taeda L). In: Abstract collection of the international workshop on Ecophysiology and Genetics of...

Ngày tải lên: 08/08/2014, 18:21

... des ectomycorhizes naturelles entre le hêtre (Fagus sylvatica) et deux lactaires (Lactarius blennius var viridis et Lactarius subdulcis). Il. Caractérisation cytochimique des ... dans les struc- tures des mycorhizes et, d’autre part, dans les transferts entre les deux partenaires. MATÉRIEL ET MÉTHODES Les mycorhizes sont...

Ngày tải lên: 08/08/2014, 18:21

... & Cowan I.R., eds.), Stanford University Press, Stanford, pp. 323 -351 Environmental control of CO 2 assimilation rate and leaf conductance in two species of the tropical rain ... of the tropical rain forest of French Guiana (Jacaranda copaia D. Don and Eperua falcata Aubl.) R. Huc 1 J.M. Guehl 2 1 Station de...

Ngày tải lên: 09/08/2014, 04:20

... Influence de la nutrition du hêtre (Fagus sylvatica L.) sur la sensibilité au chancre provoqué par Nectria ditissima Tul. R. PERRIN on de Recherche J. GARBAYE sur la Flore ... que la nutrition exerce une grande influence sur la sensibilité du hêtre au chancre et montre l’avantage tiré d’une nutrition équilibrée sur...

Ngày tải lên: 09/08/2014, 06:21