Báo cáo lâm nghiệp: "Tree density and site quality influence on Pinus halepensis Mill. reproductive characteristics after large fires" pdf

... (Special Issue): 74–81 Neuroptera, Raphidioptera and Mecoptera assemblages inhabiting young spruce (Picea abies) forests: dominance structure and seasonal activity patterns Ľ. V 1 , J. ... Neuroptera, Raphidioptera a Mecoptera mladých smrkových (Picea abies) lesů: struktura dominance a sezonní aktivita ABSTRAKT: Síťokřídlý hmyz (Neuroptera,...

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

... Poland. Supported by the Ministry of Agriculture of the Czech Republic, Project No. 0002070201. Occurrence of Ips duplicatus (Coleoptera: Curculionidae, Scolytinae) on pines (Pinus sp.) in the ... in the eastern part of the Czech Republic and in southern Poland, where the population density of Ips duplicatus has been increase...

Ngày tải lên: 07/08/2014, 03:22

... 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

... Supported by the Ministry of Education, Youth and Sports of the Czech Republic, Project No. MSM 6215648902. Occurrence, biology and harmfulness of Galerucella lineola (F.) (Coleoptera, Chrysomelidae) ... or at the end of April and at the beginning of May (H, Fig. 1. A female of the alder biological form of Galerucella lineola Fig. 2. e body...

Ngày tải lên: 07/08/2014, 03:22

... Nor- way spruce (Picea abies [L.] Karst.) underplantings in the Hrubý Jeseník Mts. In the area concerned 19 research plots were established, representing the ridge sites of the 8 th FAZ of acid ... growth and development of Norway spruce plantings in the ridge part of the Hrubý Jeseník Mts. Keywords: Norway spruce; nutrient defi...

Ngày tải lên: 07/08/2014, 10:21

... longevity and location of live roots on lodgepole pine snags and stumps grafted to living trees and to determine whether these live roots affect the diameter growth of living trees. 2. MATERIALS AND ... 10.1051/forest:2006085 Original article The persistence and function of living roots on lodgepole pine snags and stumps grafted to...

Ngày tải lên: 07/08/2014, 16:20

... high quality but low density sites (such as TAR). The lowest tree density and low Aleppo pine reproduction after large fires 651 Figure 2. Cone production (X axis: site; Y axis: number of cones per ... tree density and three for site quality distributed along Eastern Spain. 2.3. Measurement of reproductive characteristics Fertilized cones were counted and classified...

Ngày tải lên: 07/08/2014, 16:21

... 449453 â INRA, EDP Sciences, 2005 DOI: 10.1051/forest:2005041 Original article Nutritive stress and cytokinin status in Norway spruce seedlings (Picea abies L. Karst.) Klaus v. SCHWARTZENBERG*, Heinz ... increase the cytokinin content in the shoot of Norway spruce. cytokinin / forest decline / nutrient deficiency / Norway spruce / Picea abies Résumé –...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest:2006003 Original article Nutrient status and field performance of tree seedlings planted in Mediterranean degraded areas Alejandro VALDECANTOS a,b *, Jordi CORTINA c , V. Ramón VALLEJO a a Centro ... (SL) and root collar diameter (RCD) of seedlings of Pinus halepensis and Quercus ilex 2.5 years after out- planting in eight degraded woodland...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest:2003058 Original article Growth, damage and net nitrogen uptake in Picea abies (L.) Karst. seedlings, effects of site preparation and fertilisation Fredrik NORDBORG*, Urban NILSSON Swedish University of ... following hypotheses: (i) site preparation increases seedling initial growth and reduces damage during the first year after plant...

Ngày tải lên: 08/08/2014, 01:21

... (2004) 831841 â INRA, EDP Sciences, 2005 DOI: 10.1051/forest:2004084 Original article Modelling juvenile-mature wood transition in Scots pine (Pinus sylvestris L.) using nonlinear mixed-effects ... Wachstumsbedingungen. Dissertation an der Forstwiss. Fakultät der Universität Freiburg, 1992, 221 p. [33] Sauter U.H., Mutz R., Munro B.D., Determining juvenile-mature...

Ngày tải lên: 08/08/2014, 01:22

... sprouting in F sylvatica seedlings in spring also depended upon prior chilling received. Fa- lusi and Calamassi (1990), also working with seedlings, found that chilling was in fact ... LD also played a role in removing dormancy and/ or initiating growth. The findings of experiment 3 supported this hypothesis. In the Casentino seedlings a LD...

Ngày tải lên: 08/08/2014, 18:21

... 99.6 Mg ha-1 ; San Original article Biomass, litterfall and nutrient content in Castanea sativa coppice stands of southern Europe S Leonardi 1 I Santa Regina M Rapp 4 HA Gallego 3 M ... VII. This indicates again that there was much higher calcium content in the litterfall in the Etna Castanea sativa stands as compared to the San Ma...

Ngày tải lên: 08/08/2014, 18:21

... Water movement and its resistance in young trees of Cryptomeria japonica H. Yahata Laboratory of Silviculture, Department of Forestry, Faculty of Agriculture, Kyushu ... University, Fukuoka, Japan Introduction Information about water flow resistance is essential to understanding and simulating water movement in trees (Yahata, 1987). There...

Ngày tải lên: 09/08/2014, 04:20