Báo cáo lâm nghiệp:" Mature trees versus seedlings: Differences in leaf traits and gas exchange patterns in three co-occurring Mediterranean oaks" docx

... m 3 /ha (according to Report on the Condition of Forests and Forestry in the Czech Republic, 2004). Timber felling In the whole post-war period, annual timber fell- ing in the forestry of Czech Republic ... some dynamic series of forest production and trends of forest economics in the Czech Republic V. K Faculty of Forestry and Woo...

Ngày tải lên: 07/08/2014, 03:22

... assort- ments with the potential income possible to obtain An economic aspect of conversion of Scots pine (Pinus sylvestris L.) stands in the Polish Lowland A. W 1 , R. J 1 , G. R 1 , ... beginning has been fixed on the basis of the relation of the value of wood increment from the stands which need conversion to the value o...

Ngày tải lên: 07/08/2014, 03:22

... COMMUNICATION Perception of the forest by the villagers of the Salonga National Park in the Democratic Republic of Congo J. M. I Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry ... Proposal of a sustainable management of the Salonga National Park in the Democratic Republic of Congo. [Ph.D. ...

Ngày tải lên: 07/08/2014, 03:22

... within forest stands. e comparison of bulk deposition fluxes of Ca, Mg, K, S-SO 4 , N-NO 3 and N-NH 4 in mountain spruce stands of different stand density and bulk deposition fluxes on the open ... N-NO 3 and N-NH 4 in the mountain spruce stands of different stand density and bulk deposition fluxes on the open area were measured at...

Ngày tải lên: 07/08/2014, 04:20

... main tree species, the input data being the tree diameter and height, quality of the bottom third of the stem (A, B, C), stem damage (yes, no), and in the case of the beech also the age and ... for assessing the forest state – survey of natural conditions and forest ecology, detection of forest stands condition for forest management needs, and...

Ngày tải lên: 07/08/2014, 04:20

... were included in the clusters together with trees from unthinned control plots 1c. Variability of growth response of pine stands to climate characteristic in relation to thinning Variability of ... thinned stands (variant 4t) showed the higher variability of diameter growth response in comparison with those from control stands. DISCUSSION  e respon...

Ngày tải lên: 07/08/2014, 10:21

... intensity of Melampsora larici-populina occurrence and the value of growth traits and biomass yield in Populus nigra  e correlation between the growth traits of stem diameter and plant height and ... some clones (clones 7 and 107) no yield decline was observed at all or it ranged only from 6% to 9% (clones 49 and 152). It is to note that clone 107...

Ngày tải lên: 07/08/2014, 10:21

... activity of the F. sanguinea ants depending on the quantity of light incident upon the soil surface Fig. 14. GLM of the occurrence of the F. sanguinea ants depend- ing on the quantity of undergrowth ... activity of the F. pratensis ants depending on the quantity of light incident upon the soil surface Fig. 10. GLM of the occurrence of the F. pratensis...

Ngày tải lên: 07/08/2014, 10:21

... defense reactions? A 13 C labeling approach with young Scots pines inoculated with a bark-beetle-associated fungus (Ophiostoma brunneo ciliatum) Natacha Gu erard a, b , Pascale Maillard b * , Claude B r echet b , ... 601–608 Available online at: c  INRA, EDP Sciences, 2007 www.afs-journal.org DOI: 10.1051/forest:2007038 Original article Do trees...

Ngày tải lên: 07/08/2014, 16:21

... INRA, EDP Sciences, 2006 DOI: 10.1051 /forest: 2005096 Original article The angular distribution of diffuse photosynthetically active radiation under different sky conditions in the open and within ... different sky conditions and periods of the day. Results of this study are useful for refining PAR models and determining the potential impac...

Ngày tải lên: 08/08/2014, 00:22

... availability. In this study we analysed the leaf traits and patterns of gas- exchange during the well-watered part of the growth season in mature trees and seedlings of three co-occurring Quercus ... However, in our case it seems that the interspecific differences in leaf life span show a smaller effect on the phys- iological differences at leaf level in...

Ngày tải lên: 08/08/2014, 01:21

... water, and after stabilisation of stomatal conductance, the shoot was trans- ferred to a tube containing an aqueous solution of ABA (10 -3 M). Stomatal conductance was ... balanced by chloride and malate; ii) accumulation of sucrose through photosynthetic carbon fixation; and iii) accu- mulation of sucrose derived from starch breakdown...

Ngày tải lên: 08/08/2014, 18:21

... elevated carbon dioxide on leaf gas exchange and growth of cork-oak (Quercus suber L) seedlings C Damesin, C Galera, S Rambal, R Joffre Centre d’écologie fonctionnelle et évolutive, ... con- centration on the carbon gain of Quercus suber seedlings. We examined the effects of CO 2 enhancement i) on leaf gas exchange under we...

Ngày tải lên: 08/08/2014, 18:21

... after a 2 wk adaptation period as the slope of C0 2 concentration over time in the whole chamber (Gaudillere and Mousseau, 1989). During the two 1 st 2 wk, the C0 2 concentration ... where environmental conditions were controlled (22 /15°C day-night, 15 h photoperiod, 50% RH). Whole plant photo- synthesis at 25 0 jlmol-m- 2 s- 1 PPFD...

Ngày tải lên: 09/08/2014, 04:20

... large pro- Effect of soil temperature upon the root growth and mycorrhizal formation of white spruce (Picea glauca (Moench) Voss) seedlings grown in controlled environments L. ... and root morphology of white spruce seedlings were examined in a controlled environ- ment. A companion study evaluated ef- fects of root...

Ngày tải lên: 09/08/2014, 04:20