Báo cáo lâm nghiệp: "Interrelationship between vitality of ectomycorrhizae and occurrence of microfungi" pot

... the vitality of ectomycorrhizae and less atten- tion has been paid to the microfungal flora associated with the roots. Thus occurrence and species diversity of microfungi of ... Interrelationship between vitality of ectomycorrhizae and occurrence of microfungi T. Ritter, G. Weber, I. Haug, I. Kottke F. Oberwinkler Universitat ... of the...

Ngày tải lên: 09/08/2014, 04:20

... trees were felled, and three stem discs were cut in the middle and close to both ends of the inocu- lated section of each stem. Areas of blue- stained, dried and resin-soaked ... this lack of mortality, impor- tant damage (i.e. occurrence of large areas of blue-stained, resin-soaked and desic- cated sapwood) was induced in the sap- w...

Ngày tải lên: 09/08/2014, 04:20

... determined between the tree height, width and length of crown and the horizontal width of root plate, average calculated width of root plate, theoretical surface of root plate and visible surface of ... width of root plate, theoretical surface of root plate and visible surface of root plate. A medium correlation was found out between the stem diameters, tree hei...

Ngày tải lên: 07/08/2014, 10:22

... the other hand, Lambeth et al. [19], in E. grandis and Menck and Table IV. Comparison of means (and associated F-test) between cuttings and seedlings and variances values for family and clones (and ... sys- tems between cuttings and seedlings of E. globulus have been reported for this species by Sasse and Sands [25] and Sasse and Sands [27]. These authors reported...

Ngày tải lên: 08/08/2014, 00:22

... measured every third whorl, instead of every second in Lorraine) and within stands (3 trees in each stand), whereas the number of stands visited was important (12 stands, 8 forest districts, Tab. ... model for the relationships between branch num- ber and biomass in Pinus sylvestris crowns. Effect of crown shape and stand density on branch and stem biomass, Scand. J. For. Res....

Ngày tải lên: 08/08/2014, 01:22

... feed, number of working movements and procedure of their performance, thickness and width of a layer which is cut, cutting angle, speed of cutting move- ment and feed, cutting forces and friction ... used measuring devices and the process of result analysis are described in detailed. Knowledge of the wood crosscutting process and choice of suitable cutting condit...

Ngày tải lên: 07/08/2014, 03:22

... the data in terms of potential damage to forest stands by pol- lutants, and for definition of the risk area bounda- ries. Parallelly we used the same method in a beech stand (stand density 0.7) ... Agency VEGA of the Ministry of Education of the Slovak Republic and the Slovak Academy of Sciences, Projects No. 2/7162/7, 2/7185/27, 2/0045/08, and by the Slovak Research and...

Ngày tải lên: 07/08/2014, 03:22

... high- est uptake of nitrogen by the experimental crop was observed on Eutric Cambisol (200.47 mg of N per pot) and the lowest on Chernozem (127.80 mg of N per pot) . Inorganic forms of N availability ... analysis of parameters necessary for N availability assessment included calculations of standard deviation (SD), correlation coeffi cient (r) and the test of statistica...

Ngày tải lên: 07/08/2014, 10:21

... sylvatica dominance of food-attractive species PD of Fagus sylvatica (% of damaged) –0.155 –0.069 DifPD of Fagus sylvatica (differences PD sp and PD all ) –0.040 –0.360 RPD of Fagus sylvatica (rate of PD sp and ... under a stand were monitored up to a height of 150 cm and the presence of new browsing damage was monitored. Differences between the percent of damaged...

Ngày tải lên: 07/08/2014, 10:21

... conrmed between the growth stage and the optimum and the breakdown stages. e inuence of altitude on the tendency of concentration of virgin forest trees was also conrmed. In the case of complex ... at 49°10' of north latitude and 19°59' of east longi- tude, between the Kriváň massif and the Hrubô ridge on a rocky slope of south-west aspect. e bedroc...

Ngày tải lên: 07/08/2014, 10:22