Báo cáo lâm nghiệp: "Results of a phenological study of the tree layer of a mixed stand in the region of the Drahanská vrchovina Upland" ppt

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

... dominant stand and the volume of dead trees is not included in the calculation. Stand density was calcu- lated according to standard mensurational practice from the ratio of actual basal area ... is the 6 th report on the production potential and stability of mixed forest stands in uplands. A mixed beech/larch stand that was established by...

Ngày tải lên: 07/08/2014, 03:22

... study of the synusiae of small terrestrial mammals of pheasantries in southern Moravia is therefore aimed at monitoring the effect of specific properties of these habitats (high diversity of biotopes, ... supplementary food in the form of feeding for pheasants. Moreover, in the region of southern Moravia, pheasantries represent isolated areas of woo...

Ngày tải lên: 07/08/2014, 03:22

... by the Scientific Grant Agency of the Ministry of Education of Slovakia and Slovak Academy of Sciences VEGA, Project No. 2/0045/08. Amounts of throughfall and lysimetric water in a sub-mountain ... 207–211 Water as a substantial component of the living environment is a limiting factor for plants, animals and humans themselves. e amount of (surface...

Ngày tải lên: 07/08/2014, 03:22

... and in the Bieszczady and Świętokrzyskie Mountains (J, P Processes of loss, recruitment, and increment in stands of a primeval character in selected areas of the Pieniny National ... 115–131. JAWORSKI A. , KOŁODZIEJ Z., 2002. Natural loss of trees, recruitment and increment in stands of primeval character in selecte...

Ngày tải lên: 07/08/2014, 03:22

... nutrient content of aboveground biomass of teak plantation in a tropical dry deciduous forest of Udaipur, Rajasthan, India. e nutrient contents in the total biomass of teak in the plantation ... involved. Plantation species of the genus Acacia, Pinus, Euca- Quantication of nutrient content in the aboveground biomass of...

Ngày tải lên: 07/08/2014, 03:22

... results of phenological monitoring of the tree layer in a mixed stand in the region of the Drahanská vrchovina Upland in 2004–2007. e onset and duration of particular phenological stages are ... can also occur. Phenological data are a certain expression of the climate character of a given region. us, they can contribute to assess the...

Ngày tải lên: 07/08/2014, 03:22

... e application of A. cilicica, A. alba and A. nordmanniana resulted in 14% of germi- nating seedlings at least. Utilizing A. concolor, A. grandis and A. pinsapo lowered the germination rate ... 2009. 2009 In spring 2009 (beginning May 1 st ) pollination took place in two out of the four seed orchards (1 and 4).  e pollen of Abies fraseri was obtained from North Carol...

Ngày tải lên: 07/08/2014, 10:21

... each combination of plot and month. Annual leaf biomass was calculated by summing monthly leaffall. To quantify the phenological pattern of leaffall and the corre- sponding phenological structure of the ... 2006) Abstract – We monitored leaf biomass, seasonal changes in leaffall, and plot growth for 11 years post-thinning in a secondary deciduous har...

Ngày tải lên: 07/08/2014, 16:20

... especially in the 2–4 years band width. urban tree rings / sunspot number / Pacific decadal oscillation / global surface air temperature anomaly / wavelet analysis Résumé – Impact de l’activité solaire, ... Sun Y., Tao D.L. Solar activity, global surface air temperature anomaly and pacific decadal oscillation signals observed in urban outskirts tre...

Ngày tải lên: 07/08/2014, 16:21

... Crown reconstruction algorithms Two algorithms were developed to reconstruct crown radii for each tree from tree position, stem diameter, total tree height, crown base height and equivalent crown ... the following to calculate stem diameter: – The max stem diameter of the clump, for prediction of total height and crown length. – The equivalent s...

Ngày tải lên: 08/08/2014, 00:22

... de tropolones dans les cals et les suspensions cellulaires à partir d’ébauches foliaires de plantules de Thuja plicata Donn Jean-Pierre Haluk* et Cécile Roussel-Bousta Laboratoire d’Études et ... quotidienne de lumière et d’obscurité respectivement de 10 et de 14 heures. On obtient des plantules de 3,5 cm de hauteur au bout de 4 mois....

Ngày tải lên: 08/08/2014, 01:21

... d’inclinaison moyen des limites du cerne ’a’. Article original Analyse microdensitométrique appliquée au bois : méthode de traitement des données utilisée à l’Inra-ERQB (programme Cerd) Frédéric ... CONTROLE Ce traitement, qui est réalisé option- nellement à la demande de l’utilisateur, est destiné à remédier en partie aux erreurs de...

Ngày tải lên: 09/08/2014, 04:20

... de taillis. Une méthode d’évaluation régionale de la biomasse des taillis à partir des données de l’Inventaire forestier national. Application à la région Centre D. AUCLAIR I.N.R.A., Marie-Claude ... additionnées de la somme des carrés des écarts de l’équation séparée appliquée pour des âges du taillis compris entre 20 e...

Ngày tải lên: 09/08/2014, 06:21