Báo cáo lâm nghiệp: "Changes in the mycorrhizal status of some mountain spruce forests" potx

báo cáo hóa học:" Changes in the Nutrient Content of American Diets" pptx

... explore the effects of changes in food prices and income on the amount of different nutrients available for consumption. In particular, the nutrient income responses could be a starting point in ... decreasing from the fat and the egg groups but increasing from the dairy and the vegetable groups. Vitamin E the daily availability of vitamin E in American diets between the two periods increased ... the percentage change in the availability of 12 nutrients in response to a marginal increase in the price of any one food group by 10-percent (holding the prices of other food groups constant)...

Báo cáo lâm nghiệp: "Changes in the mycorrhizal status of some mountain spruce forests" potx

... 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 2004–2006Data 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 6 cm and the height (depth of space ... indicate the stabilized mycorrhizal state. Positive changes in the total increase of macromycetes diversity as well as the apparent increase of percentage of macromyce-tes can be seen in the studied...

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

... 228/29042004.Changes in Austrian pine forest ﬂoor properties in relation with altitude in mountainous areasO. 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 prevail spruce forests have indigestible ... 2007)02,0004,0006,0008,00010,00012,00014,0001400-1500m1500-1600m1600-1700m>1700m1400-1500m1500-1600m1600-1700m>1700m1400-1500m1500-1600m1600-1700m>1700m Altitude Forest Floor Weight (gr/m2)H L+F TFig. 1. Forest floor weight al-terations in connection with the altitude Forest oor weight (g/m2)1,400–1,500...

Báo cáo lâm nghiệp: "Changes in air quality in different phases of forest management process in a sub-mountain beech ecosystem (West Carpathian Mts.)" pdf

... 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, SlovakiaABSTRACT: We studied air quality in a sub-mountain beech ecosystem in the Kremnické ... intervention was evident on all plots – indicating the absence of connection with the individual phases of forest management process, but at the same time indicating the presence of climate change. In...

Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx

... Nor-way spruce (Picea abies [L.] Karst.) underplantings in the Hrubý Jeseník Mts. In the area concerned 19 research plots were established, representing the ridge sites of the 8th FAZ of acid ... growth and development of Norway spruce plantings in the ridge part of the Hrubý Jeseník Mts.Keywords: Norway spruce; nutrient deficiency symptoms; stand nutrition; soil environment Supported by the ... nutrition of stands.R ef er en ce sB J., MŁ S. (2008): Stability of Norway spruce (Picea abies [L.] Karst.) stands in the Beskid Ś laśki and beskid Žywiecki Mts. from the aspect of their...

Báo cáo lâm nghiệp: "Changes in phenolic acids and stilbenes induced in embryogenic cell cultures of Norway spruce by two fractions of Sirococcus strobilinus mycelia" pot

... 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 METHODSPlant ... embryo-genic cultures of Norway spruce (C) and in the cells elicited by mycelium protein fraction (PF) and mycelium wall frac-tion (WF) in the course of 24 h. Means ± Standard Error of two independent ... (ASTR) and piceid (PIC), determined in Norway spruce cell cultures treated with 5% and 20% A. abietina culture ﬁltrate and from the control cells (C). Means of two independent experiments with two...

Báo cáo lâm nghiệp: "Changes in the abundance of Melolontha hippocastani" ppsx

... 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 the females (Fig. 3). In the subsequent ... Statistica 8. In all the four localities we evaluated data on the intensity of cockchafer swarming and interpret-ed the trend of development of the abundance of cockchafer tribes in the particular...

Báo cáo lâm nghiệp: "Arginine and the shade tolerance of white spruce saplings entering winter dormancy" ppsx

... METHODSFour-year-old white spruce saplings were grown from seed obtained from a tree breeding seed bank at the Petawawa Forest Experiment Station, Chalk Arginine and the shade tolerance of white spruce saplings ... Size parameters and the responses of free amino acid N and guanidino compounds in the soluble N pool of stem and buds of four-year-old white spruce saplings exposed to natural light and shading ... insects, and frost da-mage. During the breaking of dormancy in spring, the removal of inhibitory guanidino compounds provides sources of N for the renewed synthesis of arginine. Arginine N and...

Báo cáo lâm nghiệp: "Nutrients in the aboveground biomass of substitute tree species stand with respect to thinning – blue spruce (Picea pungens Engelm.)" doc

... content in the biomass on the thinned plot represented 8 9–9 2% of the values calculated for the control plot without thinning. On the basis of presented research, which was done within the blue spruce ... years, the investigated substitute blue spruce stand accumulated: N – 336 kg, P – 28 kg, K – 138 kg, Ca – 159 kg, Mg – 28 kg per hectare. Thinning with the consequent removal of aboveground biomass ... 6%.At the age of 22 years, the investigated substitute blue spruce stand without thinning accumulated: N – 336 kg, P – 28 kg, K – 138 kg, Ca – 159 kg, Mg Table 1. Development of aboveground biomass...

Báo cáo lâm nghiệp:" Variation in the decay resistance and its relationship with other wood characteristics in old Scots pines" ppsx

... properties of the wood, and thusquantify the importance of the individual factors contributingto the natural durability of Scots pine wood. The variation in the in vitro decay rate, and in the extractive ... that the mass loss in the periphery part of the heartwood was lowerthan that in the centre of the heartwood. The other marked dif-ference between the outer and the inner heartwood found in the ... the same in the inner and outer heartwood, and thus could not have contributed to the significant variation in the mass loss observed between the inner and outer heartwood. The variation in the...

Báo cáo lâm nghiệp: "Variations in growth and virulence of Leptographium wingfieldii Morelet, a fungus associated with the bark beetle Tomicus piniperda L" pot

... in relation to the possible origin of the variability in fungal growth and virulence, and to practical use of fungal growth on malt agar and in the phloem for screening and comparing the virulence ... growth and virulence of Leptographium wingfieldii Morelet, a fungus associated with the bark beetle Tomicus piniperda L.Franỗois LIEUTIER a, b*, Annie YARTb, Hui YEc, Daniel SAUVARDb, Valérie ... 24]. Artificial mass inoculations of bark beetle associated blue stain fungi are often used tomimic mass attacks by bark beetles and to define a criticalthreshold of inoculation density for individual...

Báo cáo lâm nghiệp: "Variation in the composition and content of ellagitannins in the heartwood of European oaks (Quercus robur and Q petraea). A comparison of two French forests and variation with heartwood age" ppt

... Original article Variation in the composition and content of ellagitannins in the heartwood of European oaks (Quercus robur and Q petraea). A comparison of two French forests and ... identification of nine of these 12 ellagitannins (fig 1). Purifiedsamples of vescalagin, castalagin, grandinin and roburin A (kindly provided by Dr Scalbert, INRA,Paris) allowed ... relating the total soluble ellagitannins and heartwood age was calculated. In a second study two heartwood samples were taken from each of 20 oak trees (Q roburand Q petraea)...

Báo cáo lâm nghiệp: "Changes in carbon uptake and allocation patterns in Quercus robur seedlings in response to elevated an 2 CO and water stress: C 13 labelling" pps

... to compensate for plant C uptake (+ 52% ). Plant N concentration and C/ N ratio over the 22 -week growing period Original articleChanges 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. Carbon isotope composition of all plantcomponents ... uptake and allocation within pedunculate oak seedlings (Quercus robur L) grown under ambient (350 vpm) and elevated (700 vpm) atmospheric CO 2 concentration ( [CO 2 ]) and...

Báo cáo lâm nghiệp: "Changes in endogenous cytokinins during flowering induction in Douglas fir: effect of exogenous applications N. Imbau" potx

... 19, 65-84 Changes in endogenous cytokinins during flowering induction in Douglas fir: effect of exogenous applications N. ImbaultP. Doumas2C. JosephM. Bonnet-Masimbert21 ... flowering in forest trees bygibberellin A4/7 and cultural treatments: areview of the possible mechanisms. For. Ecol.Manage. 19, 65-84 Changes in endogenous cytokinins during ... Kinet J.M. (1988)Cytokinin fluxes during floral induction in thelong day plant Sinapis alba L. Plant Physiol. 86,1095-1098Owens J .N. (1969) The relative importance of initiation...

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