Báo cáo lâm nghiệp: " Fungi associated with Tomicus piniperda in Poland and assessment of their virulence using Scots pine seedlings" doc

... 801 c  INRA, EDP Sciences, 2006 DOI: 10.1051/forest:2006063 Original article Fungi associated with Tomicus piniperda in Poland and assessment of their virulence using Scots pine seedlings Robert ... col- onizer of pine tree stems. Tomicus piniperda, together with its cogener T. minor (Hrtg.), ranks among the main insect pests of Scots pine in P...

Ngày tải lên: 07/08/2014, 16:20

... than L wingfieldii in galleries of T piniperda as well as in sap- wood inside the galleries. In studies using single inoculations, both L wingfieldii and O minus produced long ... role in the tree- killing process due to its high aggressivity to Scots pine and uniform occurrence with T piniperda. As regards O minus, the as- sociatio...

Ngày tải lên: 08/08/2014, 23:21

... spatial forest management problem within the framework of a conventional spatially con- strained optimization model, and solve it using inte- ger programming with an exact solution method. References C ... assigning the cut sequence in each strip with a time lag. e management goal of both systems is to main- tain a spatial forest structure that protects stands from w...

Ngày tải lên: 07/08/2014, 10:21

... carbon stock in other virgin forests of Europe. Expressed in relative values, in the area of inter- est the highest amount of carbon stored in CWD is present in standing dead trees and snags ... stage of maturity and de- cay classes 2 and 8 (Figs. 3a and 3b). In the stage of breakdown, large differences in the deadwood volume in early and late decay stag...

Ngày tải lên: 07/08/2014, 10:21

... previously observed in pot-grown plants of blue gum [16], were also valid after transplanting: Tumbarumba maintained the highest levels of g s and RWC both at the end of preconditioning and during the first ... treatment (com- bination of provenance × water regime) were randomly selected at the end of preconditioning period and five plants at the end of post- transplanting p...

Ngày tải lên: 07/08/2014, 16:20

... computed without considering the first incubation week in order to avoid the initial flush of mineralization [5]. At the end of the experiment, another leaching was carried out and the DOC content of ... contrasts in association with a linear mixed model containing the following variables: stand, moisture treatment, the interaction between stand and moisture treatment, and t...

Ngày tải lên: 07/08/2014, 16:20

... to the timing and the inherent rate of hardening was extensive, with the onset beginning between 240 and 285 days from the beginning of the year, and LT50 values after 10 weeks ranging from –10 ... occurrence of clones with early -and- slowly hardening characteristics. The frequency distributions of clones also indicated that the timing of onset and the inherent rate of...

Ngày tải lên: 08/08/2014, 01:21

... interpretation of the data is that the efficiency of root system in terms of plant growth remains stable at least in that first growing period of plant in the forest disregarding their functions of conduction ... explaining 92% of the relationship. An adequate proportion of fine roots (thinner than 2 mm) in the root system is another important parameter of planting...

Ngày tải lên: 07/08/2014, 03:22

... mammals and the incompleteness of knowledge of their ecology and feeding behaviour have lead us to initiation of an extensive research focused on monitoring the population dynamics of rodents in ... stands and a methodology of dealing with problematic situations. Most of the foresters are uninterested in small mammals and many have only very smat- tering knowled...

Ngày tải lên: 07/08/2014, 03:22

... allows interactions with anionic macromolecules such as DNA, RNA and with negative groups of membranes. ree commonly occurring PAs in plants are di- amine putrescine (Put), triamine spermidine ... level of spermidine (M et al. 1999). A high level of putrescine was determined in the pro-embryogenic tissue of Picea rubens, while spermidine was predominant during t...

Ngày tải lên: 07/08/2014, 10:21