Báo cáo lâm nghiệp: "Changes in Austrian pine forest floor properties in relation with altitude in mountainous areas" pdf

... 82–88 in Růžová hora the average decrease was 0.70 g, in Sněžka 0.81 g (Fig. 5). Changes in the parameters within the years 2004–2006 Data on mycorrhizal status of roots obtained from spring ... approximately in the same distance (about 1 m) from the stem of five selected trees. e cylinder of the soil probe used for this purpose had the inner diameter of...

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

... 228/29042004. Changes in Austrian pine forest floor properties in relation with altitude in mountainous areas O. S, H. B. T Department of Soil Science and Ecology, Faculty of Forestry, Istanbul ... the initial mass was still remaining after 2 years for pine. Besides V and C (2001) recorded that in boreal forests where cold climatic conditions prev...

Ngày tải lên: 07/08/2014, 03:22

... 2/0045/08, and by the Slovak Research and Development Agency, Contract No. APVV-0102-06. Changes in air quality in different phases of forest management process in a sub-mountain beech ecosystem (West ... ecosystem (West Carpathian Mts.) D. K Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia ABSTRACT: We studied ai...

Ngày tải lên: 07/08/2014, 03:22

... Results of studies have indicated that some quantitative aspects of beetle feeding in Feeding ecology of pine shoot beetles (Tomicus spp.) in tree crowns of Scots pine (Pinus sylvestris L.) stands ... distribution of losses in growth of trees caused by the feeding of pine shoot beetles Tomicus piniperda and T. minor (Col., Sco...

Ngày tải lên: 07/08/2014, 04:20

... concentrations during defence response in Nor- way spruce embryogenic cell suspension cultures induced by intracellular protein and wall prepara- tions from Sirococcus strobilinus mycelia. MATERIAL AND METHODS Plant ... embryo- genic cultures of Norway spruce (C) and in the cells elicited by mycelium protein fraction (PF) and mycelium wall frac- tion (W...

Ngày tải lên: 07/08/2014, 10:21

... males. In the years of heavy swarming (2005 and 2008) we saw a difference between males and females in the time of swarming; the swarming of females cul- minated at the time when the swarming of ... fluctua- tions in the intensity of swarming were due to low evening and night temperatures (rain). During the entire period of swarming the males outnumbered th...

Ngày tải lên: 07/08/2014, 10:21

... periodically. e utilization of productive growth space of the virgin forest by particular tree species and the share of the tree species in the total crown canopy in tree layers were calculated according ... mechanism, the trees of the previous generation are dying off, including fir. Dynamics of diameter structure in natural forest To exp...

Ngày tải lên: 07/08/2014, 10:22

... 2006. Changes of the mixed mountain virgin forest after 70 years on a permanent plot in the Ukrainian Carpathians J. V, J. Š, T. K Department of Forest Botany, Dendrology and Geobiocenology, ... beech rotate. In 1934 the stage of disintegration probably pre- dominated in the plot, because total timber volume was rather low and na...

Ngày tải lên: 07/08/2014, 10:22

... years for density including ear- lywood and latewood density [22]. Early selection for radiata pine (Pinus radiata) has been examined in growth and wood density. Cotterill and Dean [6] observed early ... as for wood density, the age-age genetic Early selection for wood quality traits in radiata pine 3 (2) age trend of heritability of these traits; (3...

Ngày tải lên: 07/08/2014, 16:20

... Europe: a comparison between archaeological and actual oak ring series (Quercus robur and Quercus petraea) Kristof HANECA a *, Joris VAN ACKER a , Hans BEECKMAN b a Ghent University, Department ... three archaeological sites in Flanders. N: number of tree -ring series. AV. No. TR, AV. RW and AV. STDEV: the average number of tree rings, the avera...

Ngày tải lên: 08/08/2014, 00:22

... Succession from bog pine to Norway spruce stands 351 Table I. Vegetation tabular of the phytocoenotic relevés and their synusial relevés in the bog pine stand of phytocoenosis No 1 and in the bog pine ... A., Schweingruber F.H., Gobat J M., Stand structure, invasion, and growth dynamics of bog pine (Pinus uncinata var. rotundata) in relation to pe...

Ngày tải lên: 08/08/2014, 01:21

... to compensate for plant C uptake (+ 52% ). Plant N concentration and C/ N ratio over the 22 -week growing period Original article Changes in carbon uptake and allocation patterns in ... elevated [CO 2 ], by -11 and +13% , respectively (table III). Drought increased plant C and N concen- trations in both CO 2 treatments. Carb...

Ngày tải lên: 08/08/2014, 18:21

... 19, 65-84 Changes in endogenous cytokinins during flowering induction in Douglas fir: effect of exogenous applications N. Imbault P. Doumas 2 C. Joseph M. Bonnet-Masimbert 2 1 ... flowering in forest trees by gibberellin A4/7 and cultural treatments: a review of the possible mechanisms. For. Ecol. Manage. 19, 65-84 Changes in endogenou...

Ngày tải lên: 09/08/2014, 04:20

... Changes of partitioning and increased root lengths of spruce and beech exposed to ambient pollution concentrations in southern England G. Taylor 1 M.C. Dobson 2 P.H. ... evidence exists to suggest that drought may act as an incit- ing factor, accelerating the decline of forest trees exposed to chronic doses of air pollution. For...

Ngày tải lên: 09/08/2014, 04:20