Báo cáo lâm nghiệp: " Seed germination of Quercus robur, Q. pyrenaica and Q. ilex and the effects of smoke, heat, ash and charcoal" ppsx

... 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

... Comparison of general tree characteristics of less known oak species Quercus dalechampii Ten. and Quercus polycarpa Schur R. M Faculty of Forestry and Wood Technology, Mendel University of Agriculture ... Average total height of measured trees of both studied species Fig. 2. Average height of the live crown base of both studied species Q....

Ngày tải lên: 07/08/2014, 03:22

... weeks and live plants were found even after 14 weeks (R, B 2002). Under the aforementioned conditions Germination of acorns and development of oak seedlings (Quercus robur L.) following ... flooded areas of North American ripa- rian forests (upland oaks) have a higher sensitivity to flood than the oak species of the actual floodplains (bottomland oak...

Ngày tải lên: 07/08/2014, 03:22

... Republic ABSTRACT: The effect of ethephon (80, 100 and 120 mg·l –1 ) and gibberellic acid (GA 3 ) (40, 300 and 1,000 mg·l –1 ) on the germination capacity (GC) and mean germination time (MGT) of European beech ... of the present paper was to deter- mine the effect of gibberellic acid and ethephon on overcoming beechnut dormancy and stimulati...

Ngày tải lên: 07/08/2014, 10:21

... characteristics of GE and GC of analysed samples of short- term stored seed (S) and long-term stored seed (L) in the first year (T1) and the second year of testing (T2) Variant N Germination energy (GE %) Germination ... values of germina- tion energy (GE) and germination capacity (GC) in individual months (M = 1, 2, 3 … 12), in total 10 for short- term (...

Ngày tải lên: 07/08/2014, 10:21

... pure and mixed stands. Growth of oaks in mixed stands with beech 461 The effects of stand density (Rdi o ak + beech) , species com- position (mix b eech), stand age of oak (age o ak), and site index of ... the stand basal area increment as a function of dominant height, height increment of the dominant trees, and stand density...

Ngày tải lên: 07/08/2014, 16:20

... 10.1051/forest:2006027 Original article Germination after heat treatments of Pinus tropicalis Morelet and Pinus caribaea Morelet var. caribaea seeds of west Cuban forests Jorge D L H a * ,MartaB  b , ... a Figure 1. Average cumulate rate of germination for replicates of 50 seeds of Pinus tropicalis and P. caribaea var. caribaea...

Ngày tải lên: 07/08/2014, 16:20

... 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

... analyse interannual and seasonal variation of litterfall in a cork oak forest of the Montseny massif (Catalonia, north-eastern Iberian Peninsula) and its relationship with meteorological data. 2. ... seasonal variation and twigs peaked in early summer and autumn. Rainfall precipi- tation was more variable and less seasonal than temperature but rainfall generally...

Ngày tải lên: 07/08/2014, 16:20

... 2006 DOI: 10.1051/forest:2005112 Original article Seed germination of Quercus robur, Q. pyrenaica and Q. ilex and the effects of smoke, heat, ash and charcoal Otilia REYES*, Mercedes CASAL Área ... account the type of resprout, Q. robur, Q. pyrenaica and Q. ilex are Pyrogeophyte species. The first of these resprouts from the stump or...

Ngày tải lên: 08/08/2014, 00:22

... high temperatures favoured the germination of Genista florida. Therefore, a balance between the elimination of competitor shrub species and the stimulation of the germination of Pinus sylvestris seeds must be ... 2002076 Original article Predicting the probability of seed germination in Pinus sylvestris L. and four competitor shrub sp...

Ngày tải lên: 08/08/2014, 01:21

... the origin of D. sissoo plan- tations in Nepal. In particular, we addressed the following ques- tion: Is there evidence for long-distant transfer of seeds for plantation establishment? 2. MATERIAL ... reproductive material. Our results sup- port this view by providing evidence for long-distance seed transfer during plantation establishment. Small relics...

Ngày tải lên: 08/08/2014, 01:22

... 2004 DOI: 10.1051/forest:2004011 Note Argan (Argania spinosa (L.) Skeels) seed germination under nursery conditions: Effect of cold storage, gibberellic acid and mother-tree genotype Mohamed ALOUANI, ... effect of GA and cold in the case of argan seed germination. From the results of this study, dormancy can be broken using GA or cold s...

Ngày tải lên: 08/08/2014, 01:22

... Madrid, Spain (Received 1 June 1996; accepted 19 December 1996) Summary — The effect of high temperatures and ash on seed germination of two Iberian pines (Pinus nigra ... seed germination of two Iberian pines (Pinus nigra ssp salzmannii, P sylvestris var iberica) A Escudero S Barrero JM Pita Dpto Biología Veg...

Ngày tải lên: 08/08/2014, 18:21

... de populations. Contribution à l’étude de la variabilité biologique et biochimique du pin à crochets (Pinus uncinata Ram.) dans les Pyrénées R. CANTEGREL Biologie des Ecosystè Centre ... de la pineraie de Pinus uncincrlu aux Pyrénées L’existence de deux populations reliques dans les Monts Jbériqucs, au-deia de la vaste plain...

Ngày tải lên: 09/08/2014, 06:21