Báo cáo lâm nghiệp: "Can 13C stable isotope record of Norway spruce tree rings display the effect of environmental conditions" pot

... (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

... 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

... activity in the past can be recorded from the fluctuation of the carbon stable isotope ratio in tree rings and assigned to the exact year or time period (G, C 1994). Norway spruce (Picea ... was performed using the 13 C stable isotope record from three trees only. e main objective of our study was to enlarge the data set and to validate the...

Ngày tải lên: 07/08/2014, 03:22

... volume of the log in m 3 , h – length of the log in m, g 1/2 – cross-sectional area at ẵ length of the log in m 2 . Total volume of coarse woody debris was given as a sum of the volumes of standing ... 2010 (9): 397–405 Coarse woody debris carbon stocks in natural spruce forests of Babia hora K. M 1,2 , J. M 1,2 1 Department of Fo...

Ngày tải lên: 07/08/2014, 10:21

... di- amine putrescine (Put), triamine spermidine (Spd) and tetramine spermine (Spm). ere are a number of reports indicating that PAs play a crucial role in somatic embryo development including ... hurst ecotype of Norway spruce. Contents of free polyamines (putrescine, spermi- dine, and spermine) were determined in different developmental stages of Norway spruce somatic...

Ngày tải lên: 07/08/2014, 10:21

... problem, for instance comparing Norway spruce (Picea abies [L.] Karst.) and European beech (Fagus sylvatica L.; S 2002), Norway spruce, Scots pine (Pinus sylvestris L.) and European beech (F ... E., 2007. Variation in fine root biomass of three European tree species: beech (Fagus sylvatica L.), Norway spruce (Picea...

Ngày tải lên: 07/08/2014, 10:22

... stock of litter and soil and its annual changes in Finland’s forests between 1922 and 2004. The black lines show these variables when the transfers of carbon in litter and soil between forests and ... uses in Finland’s forests between 1922 and 2004. Figure 6. Annual changes in the carbon stock of litter and soil in Fin- land’s forests between 19...

Ngày tải lên: 07/08/2014, 16:20

... rotation to integrate timber and pine nut production with the conservation of structural diversity in a Pinus pinea (L.) forest Fernando M a * ,MaríaJ.H  ´  b , Rafael C a ,IsabelC ˜  a a CIFOR-INIA, ... lag cen- tred at d ,andz(u a )andz(u a +d) are the values that the variable z takes at samplesu a and u a...

Ngày tải lên: 07/08/2014, 16:20

... www.afs-journal.org DOI: 10.1051/forest:2007030 Original article Parental participation in progeny and effective population sizes in experimental seed orchards of wild cherry Prunus avium L. (Batsch) Stéphanie M a,b,c,g, * , ... based on the seed crop, instead of the number of flowers led to observe a diminution of the effective size of 1.8, 3...

Ngày tải lên: 07/08/2014, 16:21

... place on 4 deer- free islands (Low Island, South-Low Island, Lost Island and Tar Island) and 4 deer- affected islands (Reef Island, Ramsay Island, Burnaby Island and the south of Moresby Island) (Fig. ... the four deer- free islands (Lost, Low and Tar Islands) and from all four of the deer- affected islands (Reef Island, Ramsay Island, Burnaby Island and south of Moresby Isl...

Ngày tải lên: 08/08/2014, 00:21

... 10.1051/forest:2005018 Original article Predicting balsam fir growth reduction caused by spruce budworm using large-scale historical records of defoliation David POTHIER a *, Daniel MAILLY b , ... – To predict the reduction in growth of balsam fir (Abies balsamea (L.) Mill.) subjected to spruce budworm (Choristoneura fumiferana (Clem.)) epidemics, tree-...

Ngày tải lên: 08/08/2014, 00:21

... 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

... A comparative study using floristic and abiotic indices in sessile oak (Quercus petraea Liebl.) stands in northern France Laurent BERGÈS a *, Jean-Claude GÉGOUT b , Alain FRANC c a Cemagref, ... combined the CA Axes and soil water capacity and was slightly better than models M4 and M1. Model M7 combined abiotic indices (SWC 0-150 and Mg/K)...

Ngày tải lên: 08/08/2014, 00:22

... 1118 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest: 2002069 Original article High-grading effects on Scots pine volume and basal area in pure stands in northern Spain Felipe Bravo a * and Gregorio ... Total and standing volume in a medium productivity (site index 20 m at 100 years), high-graded and non high-graded Scots pine stands in northern Sp...

Ngày tải lên: 08/08/2014, 01:21

... the inventory takes 10 years to be completed. An alternative method is needed for a rapid assessment of infestations. In this paper, we evaluate whether data from sales of attacked timber can be used to ... an out- break of I. typographus in 1991–1992. Information on attacks by the bark beetle was extracted from timber sales for 1988 to 1996. In Belgium,...

Ngày tải lên: 08/08/2014, 01:22