Báo cáo lâm nghiệp: "Processes of loss, recruitment, and increment in stands of a primeval character in selected areas of the Pieniny National Park (southern Poland" ppt

... 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

... primary productivity in ter- restrial ecosystems (J et al. 1999), N miner- Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China G. Q 1,2 , Q. ... is maintained at 20°C. For the given vegetation type of Changbai Mountain, soil C and N mineralization rate, potential mineralizable C (C 0 ) and potential ra...

Ngày tải lên: 07/08/2014, 10:21

... dominance of a species (D) with the difference in damage to a given tree species and damage to all species (DifPD) and the proportion of damage to a given species and damage to all species (RPD) y ... attractive species D attrac = (N attrac /N all ) ì 100; ã a dierence between damage to a species and dam - age to all species DifPD = PD sp PD all ; ã a die...

Ngày tải lên: 07/08/2014, 10:21

... addition, these variables should be of easy measurement and understanding, and should Stand growth model using volume increment/basal area ratios G. J. M P 1 , J. M. C 2 , M. V. ... estimate growths using biometric models previously developed. e growth values of each plot during the last twenty years were calculated to fit the model, using the ratio of...

Ngày tải lên: 07/08/2014, 10:21

... 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

... 10.1051/forest:2007040 Original article End-use related physical and mechanical properties of selected fast-growing poplar hybrids (Populus trichocarpa ì P. deltoides) Lieven De Boever,DriesVansteenkiste,JorisVan ... the variabil- ity in selected physical and mechanical properties of new inter-American poplar clones (P. trichocarpa ì deltoides). As...

Ngày tải lên: 07/08/2014, 16:21

... original Estimation de l’accroissement et de la production forestière à l’aide de placettes permanentes concentriques Jacques HÉBERT, Nils BOURLAND, Jacques RONDEUX* Faculté universitaire des Sciences ... placettes circulaires uniques de rayon fixe (18 m) équivalentes à la plus grande des placettes concentriques. De cette manière, nous avons pu procéder...

Ngày tải lên: 08/08/2014, 00:21

... carried out in the morning between 07 00 and 12 00 h in the forest understorey and between 07 00 and 10 00 h in the clearing to avoid a mid-day stomatal closure. During the A-PPFD responses, the mean ... structure and functional leaf traits in the tropical forest tree Dicorynia guianensis Amshoff (Caesalpiniaceae) Jean Christophe ROGGY a *...

Ngày tải lên: 08/08/2014, 00:22

... Pascual L., Trasobares A. , Examining alter- native landscape metrics in ecological forest landscape planning: a case for capercaillie in Catalonia, Investigaciones Agrarias, Sist. Recur. For. 13 (2004) ... inFlor, a Manage- ment Information System in Forest resources, in: Pukkala T., Eerikainen K. (Eds.), Modelling the Growth of Tree Plantations and Agroforestry Systems...

Ngày tải lên: 08/08/2014, 00:22

... article Non-indigenous plant species and their ecological range in Central European pine (Pinus sylvestris L.) forests Stefan ZERBE*, Petra WIRTH Institute of Ecology, Technical University Berlin, ... availability on plant invasions. 5.3. Reversibility and irreversibility of the plant invasions in pine forests According to Ellenberg [14], the natural...

Ngày tải lên: 08/08/2014, 00:22

... additivité des pertes de masse, des études sur du hêtre ont montré qu’environ 14.4 % de la perte de masse totale du bois en fin d’isotherme provien- drait des dégradations de l’holocellulose et 6 % des ... diffraction des rayons X et par des méthodes basées sur la polarisation du rayonnement infrarouge. Elle se présente sous la forme de microfibrilles de 2 à 6 nm...

Ngày tải lên: 08/08/2014, 00:22

... 525535 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2004047 Original article Relationships between stem size and branch basal diameter variability in Norway spruce (Picea abies (L.) Karsten) from ... relationships between branch basal diameter of living whorls, stem size (height and diameter at breast height) and stand parameters (stan...

Ngày tải lên: 08/08/2014, 01:22

... 81 Ann. For. Sci. 61 (2004) 8186 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2003087 Original article Relationships between hydraulic traits and habitat preference for six Acer species occurring ... adapted for high water transport. In contrast, plants need to invest less in means of acquiring water for their growth in dry habitats, and therefore reduced...

Ngày tải lên: 08/08/2014, 01:22

... but Short note Insect damage to cones and other mortality factors limiting natural regeneration potential of Swiss stone pine (Pinus cembra L) in the northern French Alps L ... seed cones of P cembra, and then to measure the respective impact of insects and other mortality factors on the potential of natural...

Ngày tải lên: 08/08/2014, 18:21

... trig- gering the stomatal closure, and ii) what are the functions of the stomatal regulation? Original article Whole tree hydraulic conductance and water loss regulation in Quercus ... embolism in xylem. Plant Cell Environ 11, 35-40 Tardieu F, Davies WJ (1993) Integration of hydraulic and chemical signaling in the control of s...

Ngày tải lên: 08/08/2014, 18:21