Báo cáo lâm nghiệp: "Compression stress in opposite wood of angiosperms: observations in chestnut, mani and poplar" ppsx

... relation between the extent of the damage and the individual characteristics of the experimental plots. e relation between the extent of the damage and the method of estab- lishment of the stands ... explored the ecological conditions, which influence the female Melolontha hippocastani F. in their selection of the locality for laying eggs. In the regio...

Ngày tải lên: 07/08/2014, 03:22

... 526/03/H036. Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands P. S 1 , ... 1992). Norway spruce (Picea abies [L.] Karst.) is the main edificator and stand-forming tree species in mountain spruces sta...

Ngày tải lên: 07/08/2014, 03:22

... study of the synusiae of small terrestrial mammals of pheasantries in southern Moravia is therefore aimed at monitoring the effect of specific properties of these habitats (high diversity of biotopes, ... supplementary food in the form of feeding for pheasants. Moreover, in the region of southern Moravia, pheasantries represent isolated areas of woo...

Ngày tải lên: 07/08/2014, 03:22

... addition to them other roads also contain rural roads. e total length of single grades of forest transport roads in forests in the Czech Republic was rated dur- ing the forest inventory in the Czech ... classification forest transport roads are divided, in addition to grades, into forest roads and other roads leading through the forest. e...

Ngày tải lên: 07/08/2014, 10:21

... involved measurements of RGS and longitudinal drying shrinkage, and were presented in de- tails in previous papers [10, 11]. New data on poplar are also shown, including measurements of RGS and ... contin- uum in behaviour from the “normally” tensile stressed wood to the compression stressed wood. Inside the group of nor- mal wood samples (including compression values),...

Ngày tải lên: 07/08/2014, 16:20

... explains intra-tree-ring wood density change, and (2) sorting out tracheid anatomical characteristics in order of im- portance. The work was carried out with Douglas fir (Pseudotsuga menziesii (Mirb.) ... between wood den- sity and tracheid characteristics along a tree-ring, i.e. on intra- tree-ring variations. However, it is also interesting from these...

Ngày tải lên: 07/08/2014, 16:20

... and SG-ratio tested depending on thinning intensities for radiata pine and maritime pine. Pinus radiata Pinus pinaster Intensity of First thinning Second thinning First thinning Second thinning thinning ... study was to calculate the accumu- lation and the export of nutrients over time in Pinus pinaster (maritime pine) and Pinus radiata (radiata pine) stands...

Ngày tải lên: 07/08/2014, 16:21

... alterna- tives for Scots pine stands in northern Spain, Ann. For. Sci. 61 (2004) 163–169. [7] Bravo F., Montero G., Site index estimation in Scots pine (Pinus sylvestris L.) stands in the High Ebro Basin ... INRA, EDP Sciences, 2005 DOI: 10.1051/forest:2005006 Original article Site quality equations for Pinus sylvestris L. plantations in Galicia (northwest...

Ngày tải lên: 08/08/2014, 00:21

... petraea Liebl.) site index variations in relation to climate, topography and soil in even-aged high-forest stands in northern France Laurent BERGÈS a *, Richard CHEVALIER a , Yann DUMAS a , Alain ... water and nutrient budgets in predicting site index variations The climate/water-related factors and nutrient-related fac- tors explained 0 to 25...

Ngày tải lên: 08/08/2014, 00:22

... 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

... site. The comparison of predator/prey ratios between sites and years was carried out using a two-way analysis of variance of the angular trans- form of the predator/prey ratio, with the site, year, ... clearly higher in HA and ST (the two sites with pines) than in GU and 2L, and all ratios tend to increase with years (two-way ANOVA using arc- sine-transformed ratios...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest:2006019 Original article Response to an ozone gradient of growth and enzymes implicated in tolerance to oxidative stress in Acer saccharum (Marsh.) seedlings Catherine G a,b * ,NadineC  c ,PaulW c , ... leading to a compromise be- tween maximizing aboveground growth and developing below ground growth to enhance t...

Ngày tải lên: 08/08/2014, 00:22

... 327335 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2004026 Original article A flexible radial increment model for individual trees in pure even-aged stands Christine DELEUZE a *, Olivier PAIN a , ... various individual growth models for trees in pure and even-aged stands, a generic model with a form parameter according to each species is proposed. With a f...

Ngày tải lên: 08/08/2014, 01:21

... Apoplast: a sensitive site for assessing some biochemical effects of O3 or SO 2 in Norway spruce needles G. Ogier, F.J. Castillo H. Greppin Laboratory of Plant Biochemistry ... the data were obtained from grafted saplings originating from the same clone and the total dose for this long-term 03 fumigation was 200 ppm/h. Apparently, extracel...

Ngày tải lên: 09/08/2014, 04:20

... Technical communication no. 52, CAB, p. 306 Effect of phosphate fertilization on trace element nutrition of Pinus pinaster grown in a sandy acid soil E. Saur lNRA, StationdAgronomie, ... several growth disturbances and malformations without pathological affec- tions have appeared in pines and particularly in 3 yr old pines (twisting of br...

Ngày tải lên: 09/08/2014, 04:20